1
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Roper NJ, Campbell ADG, Waddell PG, Brown AK, Ermanis K, Armstrong RJ. A stereodivergent multicomponent approach for the synthesis of C-N atropisomeric peptide analogues. Chem Sci 2024:d4sc04700a. [PMID: 39323517 PMCID: PMC11418089 DOI: 10.1039/d4sc04700a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Accepted: 09/15/2024] [Indexed: 09/27/2024] Open
Abstract
A four-component Ugi reaction is described for the stereoselective synthesis of novel C-N atropisomeric peptide analogues. Using this approach, a combination of simple, readily available starting materials (ortho-substituted anilines, aldehydes, carboxylic acids and isocyanides) could be combined to access complex products possessing both central and axial chirality in up to 92% yield and >95 : 5 d.r. Variation of the reaction temperature enabled the development of stereodivergent reactions capable of selectively targeting either diastereoisomer of a desired product from a single set of starting materials with high levels of stereocontrol. Detailed experimental and computational studies have been performed to probe the reaction mechanism and stereochemical outcome of these reactions. Preliminary studies show that novel atropisomeric scaffolds prepared using this method display inhibitory activity against M. tuberculosis with a significant difference in activity observed between different atropisomers.
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Affiliation(s)
- Natalie J Roper
- School of Natural and Environmental Sciences, Newcastle University Newcastle Upon Tyne NE1 7RU UK
| | - Aaron D G Campbell
- School of Natural and Environmental Sciences, Newcastle University Newcastle Upon Tyne NE1 7RU UK
| | - Paul G Waddell
- School of Natural and Environmental Sciences, Newcastle University Newcastle Upon Tyne NE1 7RU UK
| | - Alistair K Brown
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University Newcastle Upon Tyne NE2 4HH UK
| | - Kristaps Ermanis
- School of Chemistry, University of Nottingham, University Park Nottingham NG7 2RD UK
| | - Roly J Armstrong
- School of Natural and Environmental Sciences, Newcastle University Newcastle Upon Tyne NE1 7RU UK
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2
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Li T, Zhang Y, Du C, Yang D, Song MP, Niu JL. Simultaneous construction of inherent and axial chirality by cobalt-catalyzed enantioselective C-H activation of calix[4]arenes. Nat Commun 2024; 15:7673. [PMID: 39242562 PMCID: PMC11379863 DOI: 10.1038/s41467-024-52133-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 08/27/2024] [Indexed: 09/09/2024] Open
Abstract
The simultaneous construction of multiple stereogenic elements in a single step is highly appealing and desirable in the field of asymmetric synthesis. Furthermore, the catalytic enantioselective synthesis of inherently chiral calix[n]arenes with high enantiopurity has long been a challenging endeavor. Herein, we report an enantioselective cobalt-catalyzed C-H activation/annulation for the efficient construction of inherently chiral calix[4]arenes bearing multiple C-N axially chiral element. By employing the benzamide tethered calix[4]arene as the substrate, the C-H annulation with alkynes can be successfully accomplished, leading to the generation of multiple stereogenic elements. A wide range of calix[4]arenes and alkynes are found to be well compatible, and exhibit good yields, high enantioselectivity and excellent diastereoselectivity. Notably, the gram-scale reaction, catalytic application, synthetic transformations, and chiral recognition further showcase the potential applications of this protocol.
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Affiliation(s)
- Tong Li
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Yanbo Zhang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Cong Du
- School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, China
| | - Dandan Yang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China.
| | - Mao-Ping Song
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China
| | - Jun-Long Niu
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou, China.
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3
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Zhu XQ, Yang HY, Ye LW. Chiral Brønsted Acid-Catalyzed Asymmetric Reaction via Vinylidene Ortho-Quinone Methides. Chemistry 2024; 30:e202402247. [PMID: 38923595 DOI: 10.1002/chem.202402247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 06/28/2024]
Abstract
Vinylidene ortho-quinone methides (VQMs) have been proven to be versatile and crucial intermediates in the catalytic asymmetric reaction in last decade, and thus have drawn considerable concentrations on account of the practical application in the construction of enantiomerically pure functional organic molecules. However, in comparison to the well established chiral Brønsted base-catalyzed asymmetric reaction via VQMs, chiral Brønsted acid-catalyzed reaction is rarely studied and there is no systematic summary to date. In this review, we summarize the recent advances in the chiral Brønsted acid-catalyzed asymmetric reaction via VQMs according to three types of reactions: a) intermolecular asymmetric nucleophilic addition to VQMs; b) intermolecular asymmetric cycloaddition of VQMs; c) intramolecular asymmetric cyclization of VQMs. Finally, we put forward the remained challenges and opportunities for potential breakthroughs in this area.
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Affiliation(s)
- Xin-Qi Zhu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, China
| | - Hai-Yu Yang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, China
| | - Long-Wu Ye
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, China
- Key Laboratory for Chemical Biology of Fujian Province and State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen, 361005, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, P. R. China
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4
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Kitagawa O. Structural Chemistry of C-N Axially Chiral Compounds. J Org Chem 2024; 89:11089-11099. [PMID: 39087953 DOI: 10.1021/acs.joc.4c01065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
In the last several years, atropisomers owing to the rotational restriction around a C-N single bond (C-N axially chiral compounds) have attracted significant attention in the field of synthetic organic chemistry. In particular, the highly enantioselective synthesis of various C-N axially chiral compounds and their application to asymmetric reactions have been reported by many groups. On the other hand, studies on the structural chemistry of C-N axially chiral compounds have attracted scant attention in comparison with synthetic studies. For over 25 years, our group has explored asymmetric synthesis of C-N axially chiral compounds and their synthetic application. In the course of these synthetic studies, we found several notable structural properties in relation to the C-N bond rotation and an association of enantiomers (the relationship between the rotational stability and the structure or electronic effect, the chirality-dependent halogen bond, and the self-disproportionation of enantiomers). Furthermore, on the basis of these structural properties, the development of acid-mediated molecular rotors and the synthesis of isotopic atropisomers possessing high stereochemical purity and rotational stability were achieved. Through this Perspective, I wish to make the chemistry community aware that C-N axially chiral compounds are attractive molecules from the viewpoints of both synthetic organic chemistry and structural chemistry.
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Affiliation(s)
- Osamu Kitagawa
- Chemistry and Materials Program, College of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo, 135-8548, Japan
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5
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Liu ZL, Wang YX, Yang ZQ, Yang YH, Liu YP, Hao WJ, Jiang B. Construction of central and axial chirality via Pd(II)/Bim-catalyzed asymmetric dearomative Michael reaction of polycyclic tropones. Chem Commun (Camb) 2024; 60:8908-8911. [PMID: 39091214 DOI: 10.1039/d4cc03166k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
A highly enantioselective Pd/Bim-catalyzed dearomative Michael reaction applying polycyclic tropones as non-benzenoid aromatic Michael acceptors and arylboronic acids as aryl pronucleophiles has been developed. The bridged biaryls bearing central and axial chirality, including pentacyclic cyclohepta[b]indoles and 6,7-dihydrodibenzo[a,c][7]annulen-5-ones, are generally generated in good to high yields and excellent enantioselectivities and can be readily transformed into useful derivatives.
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Affiliation(s)
- Zi-Li Liu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Yu-Xin Wang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Zi-Qi Yang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Yu-Heng Yang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Yin-Ping Liu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, China.
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6
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Yao C, Li DR, Xiang HM, Li SJ, Lu Y, Wang Z, Yin T, Wang J, Feng K, Zhu C, Xu H. Copper-catalysed asymmetric annulation of yne-allylic esters with amines to access axially chiral arylpyrroles. Nat Commun 2024; 15:6848. [PMID: 39127693 DOI: 10.1038/s41467-024-50896-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024] Open
Abstract
The construction of atropisomers with 1,2-diaxes, while maintaining high enantiocontrol, presents a significant challenge due to the dynamic nature of steric hindrance at ortho-aryl substituents. Although various catalytic asymmetric methods have been developed for accessing axially chiral arylpyrroles, the synthesis of axially chiral arylpyrroles with 1,2-diaxes in a catalytic asymmetric manner has remained rare. Herein, the authors report the synthesis of diverse axially chiral arylpyrroles with 1,2-diaxes, and C-C and C-N axes through copper-catalysed asymmetirc [4 + 1] annulation of yne-allylic esters with arylamines via a remote stereocontrol strategy. This approach provides facile access to a broad range of heterobiaryl atropisomers (67 examples) in excellent enantioselectivities, each bearing one or two C-C/C-N axes, demonstrating its versatility and efficiency. The utility of this methodology is further highlighted by the transformation of the product into chiral phosphine ligand, and chiral thioureas for the use in asymmetric catalysis.
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Affiliation(s)
- Chaochao Yao
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Dan-Ran Li
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Hua-Ming Xiang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Si-Jia Li
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Yuepeng Lu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Zihao Wang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Tingrui Yin
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Jiaqiang Wang
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Kongling Feng
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Cuiju Zhu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Hao Xu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education. State Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan, 430079, China.
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7
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Xie ZY, Tang C, Li L, Zhou Z, Zou J, Qian PC. Rhodium-Catalyzed Regioselective [4 + 2] Cycloaddition of Ynamines and 2-(Cyanomethyl)phenylboronates. Org Lett 2024; 26:6586-6590. [PMID: 39079756 DOI: 10.1021/acs.orglett.4c02120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
A rhodium-catalyzed [4 + 2] cycloaddition of ynamines and 2-(cyanomethyl)phenylboronates has been developed, leading to efficient and excellent regioselective synthesis of valuable indole-linked aromatic compounds in a concise and flexible approach. Interestingly, this strategy was successful in the construction of C···N axially chiral indoles with high enantiocontrol by the introduction of a new phosphoramidite ligand (Xie-Phos).
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Affiliation(s)
- Zhong-Yang Xie
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Conghui Tang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Long Li
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Zijun Zhou
- Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Jun Zou
- School of Science, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Peng-Cheng Qian
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
- College of Medicine & Pharmaceutical Enginering, Taizhou Vocational & Technical College, Taizhou 318000, China
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8
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Hou J, Hao W, Chen Y, Wang Z, Yao W. Phosphine-Catalyzed Stereospecific and Enantioselective Desymmetrizative [3+2] Cycloaddition of MBH Carbonates and N-(2- tert-Butylphenyl)maleimides. J Org Chem 2024; 89:9068-9077. [PMID: 38822804 DOI: 10.1021/acs.joc.4c00555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2024]
Abstract
Herein, we report an l-valine-derived amide phosphine-catalyzed [3+2] cyclization of MBH carbonates and N-(2-tert-butylphenyl)maleimides via asymmetric desymmetrization. Bicyclic N-aryl succinimide derivatives bearing three continuous chiral centers with a remote C-N atropisomeric chirality were constructed stereospecifically and enantioselectively. A wide variety of MBH carbonates could be employed in this process to deliver highly optically pure succinimide derivatives in moderate to excellent yields.
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Affiliation(s)
- Jie Hou
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Wei Hao
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Ying Chen
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Zhen Wang
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, P. R. China
| | - Weijun Yao
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
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9
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Huang T, Qian C, Li P. Organocatalytic C sp2-O Amination of Quinolin-4(1 H)-ones with 3-Alkynyl-3-hydroxyisoindolinones. J Org Chem 2024; 89:9086-9091. [PMID: 38815157 DOI: 10.1021/acs.joc.4c00728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
The Brønsted acid catalytic Csp2-O amination of quinolin-4(1H)-ones with 3-alkynyl-3-hydroxyisoindolinones as animation reagents has been developed. The cascade dehydration/conjugate addition/intramolecular annulation/ring-opening reaction proceeded smoothly to afford a broad scope of aminated products with high efficiency. Furthermore, the enantioselective construction of Csp2-N atropisomers was also investigated in the presence of chiral phosphoric acid. Importantly, this work not only realized the organocatalytic Csp2-O amination of quinolin-4(1H)-ones but also laid the foundation for directly asymmetric synthesis of Csp2-N atropisomers.
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Affiliation(s)
- Tingting Huang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chenxiao Qian
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Pengfei Li
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
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10
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Ge FB, Lu CJ, Chen X, Yao W, An M, Jiang YK, Xu LP, Liu RR. Enantioselective Nickel-Catalyzed Denitrogenative Transannulation En Route to N-N Atropisomers. Angew Chem Int Ed Engl 2024; 63:e202400441. [PMID: 38587149 DOI: 10.1002/anie.202400441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/06/2024] [Accepted: 04/08/2024] [Indexed: 04/09/2024]
Abstract
Nickel-catalyzed transannulation reactions triggered by the extrusion of small gaseous molecules have emerged as a powerful strategy for the efficient construction of heterocyclic compounds. However, their use in asymmetric synthesis remains challenging because of the difficulty in controlling stereo- and regioselectivity. Herein, we report the first nickel-catalyzed asymmetric synthesis of N-N atropisomers by the denitrogenative transannulation of benzotriazones with alkynes. A broad range of N-N atropisomers was obtained with excellent regio- and enantioselectivity under mild conditions. Moreover, density functional theory (DFT) calculations provided insights into the nickel-catalyzed reaction mechanism and enantioselectivity control.
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Affiliation(s)
- Fang-Bei Ge
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Xiao Chen
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Wang Yao
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Mei An
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Yu-Kun Jiang
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Li-Ping Xu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
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11
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Sun Y, Yang T, Wang Q, Shi L, Song MP, Niu JL. Atroposelective N-N Axes Synthesis via Electrochemical Cobalt Catalysis. Org Lett 2024; 26:5063-5068. [PMID: 38864356 DOI: 10.1021/acs.orglett.4c01025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Here, we disclosed an unprecedented cobalt electrocatalyzed atroposelective C-H activation and annulation for the efficient construction of diversely functionalized N-N axes in an undivided cell. A broad range of allene substrates and benzamides bearing different functionalities are compatible with generating axially chiral products with good yields and excellent enantioselectivities (up to 92% yield and 99% ee). A series of synthetic applications and control experiments were also performed, which further expanded the practicality of this strategy.
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Affiliation(s)
- Yingjie Sun
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Taixin Yang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Qiuling Wang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Linlin Shi
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Mao-Ping Song
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Jun-Long Niu
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
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12
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Jin L, Li Y, Mao Y, He XB, Lu Z, Zhang Q, Shi BF. Chiral dinitrogen ligand enabled asymmetric Pd/norbornene cooperative catalysis toward the assembly of C-N axially chiral scaffolds. Nat Commun 2024; 15:4908. [PMID: 38851721 PMCID: PMC11162495 DOI: 10.1038/s41467-024-48582-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 05/07/2024] [Indexed: 06/10/2024] Open
Abstract
C - N axially chiral compounds have recently attracted significant interest among synthetic chemistry community due to their widespread application in pharmaceuticals, advanced materials and organic synthesis. Although the emerging asymmetric Catellani reaction offers great opportunity for their modular and efficient preparation, the only operative chiral NBE strategy to date requires using half stoichiometric amount of chiral NBE and 2,6-disubstituted bromoarenes as electrophiles. We herein report an efficient assembly of C-N axially chiral scaffolds through a distinct chiral ligand strategy. The crucial chiral source, a biimidazoline (BiIM) chiral dinitrogen ligand, is used in relatively low loading and permits the use of less bulky bromoarenes. The method also features the use of feedstock plain NBE, high reactivity, good enantioselectivity, ease of operation and scale-up. Applications in the preparation of chiral optoelectronic material candidates featuring two C-N chiral axes and a chiral ligand for asymmetric C-H activation have also been demonstrated.
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Affiliation(s)
- Liang Jin
- Department of Chemistry, Zhejiang University, Hangzhou, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Ya Li
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Yihui Mao
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Xiao-Bao He
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Qi Zhang
- Department of Chemistry, Zhejiang University, Hangzhou, China.
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China.
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, China.
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13
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Sun Y, Sun L, Zhang S, Zhang Z, Wang T. Synthesis of C-N Axially Chiral N-Arylbenzo[ g]indoles via a Central-to-Axial Chirality Conversion Strategy. Org Lett 2024. [PMID: 38780223 DOI: 10.1021/acs.orglett.4c01576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Gold-catalyzed cascade cyclization of diynes for the synthesis of previously unexplored C-N axially chiral N-arylbenzo[g]indoles was described. The transformation was achieved via a central-to-axial chirality conversion strategy. The chiral conversion exhibited high efficiency. Besides single C-N chiral axis, N-arylbenzo[g]indoles bearing both C-N and C-C chiral axes were also afforded. The title compound derived monophosphine ligand was prepared and was evaluated in Pd-catalyzed asymmetric allylic substitutions, showing excellent chiral induction ability.
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Affiliation(s)
- Yuan Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
| | - Lingzhi Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
| | - Shaoting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
| | - Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620 West Chang'an Avenue, Xi'an, 710119 Shaanxi Province, China
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14
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Sakagami T, Matsui R, Aoyama S, Niijima E, Richards GJ, Hori A, Kitagawa O. Regio- and Stereoselective α-Allylation with Enolates Prepared from N-C Axially Chiral Thiolactam and Lactam. J Org Chem 2024; 89:7312-7319. [PMID: 38683734 DOI: 10.1021/acs.joc.4c00460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The reaction of allyl bromide derivatives with the enolate prepared from enantioenriched N-C axially chiral N-(2,5-di-tert-butylphenyl)-3,4-dihydroquinolin-2-one (lactam) and -thione (thiolactam) proceeded in a completely regio- and stereoselective manner to afford SN2 and SN2'-like products, respectively. Furthermore, through the conversion of thiolactam to lactam, the regiodivergent and stereoselective synthesis of N-C axially chiral lactams bearing a chiral tertiary α-carbon was achieved.
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Affiliation(s)
- Tatsunori Sakagami
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Ryosuke Matsui
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Shohei Aoyama
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Erina Niijima
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Gary J Richards
- Department of Applied Chemistry, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Akiko Hori
- Department of Applied Chemistry, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Osamu Kitagawa
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
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15
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Liu Y, Yuan L, Dai L, Zhu Q, Zhong G, Zeng X. Carbene-Catalyzed Atroposelective Construction of Chiral Diaryl Ethers. J Org Chem 2024. [PMID: 38738853 DOI: 10.1021/acs.joc.4c00330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Atropoisomeric chemotypes of diaryl ethers-related scaffolds are prevalent in naturally active compounds. Nevertheless, there remains considerable research to be carried out on the catalytic asymmetric synthesis of these axially chiral molecules. In this instance, we disclose an N-heterocyclic carbene (NHC)-catalyzed synthesis of axially chiral diaryl ethers via atroposelective esterification of dialdehyde-containing diaryl ethers. NHC desymmetrization produces axially chiral diaryl ether atropisomers with high yields and enantioselectivities in moderate circumstances. Chiral diaryl ether compounds may be precursors for highly functionalized diaryl ethers with bioactivity and chiral ligands for asymmetric catalysis.
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Affiliation(s)
- Yuheng Liu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, China
- Kharkiv Institute at Hangzhou Normal University, Hangzhou Normal University, Hangzhou 311121, Zhejiang, China
| | - Lutong Yuan
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, China
| | - Linlong Dai
- Department of Chemistry, Eastern Institute for Advanced Study, Ningbo 315200, Zhejiang, China
| | - Qiaohong Zhu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, China
| | - Guofu Zhong
- Department of Chemistry, Eastern Institute for Advanced Study, Ningbo 315200, Zhejiang, China
| | - Xiaofei Zeng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, China
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16
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Deng X, Liang X, He C, Li J, Zhou P, Liang K, Yu L. Realization of exciton-polariton optical chirality based on strong coupling between intrinsic chiral quasibound states in the continuum and monolayer WS2. OPTICS EXPRESS 2024; 32:11522-11533. [PMID: 38570997 DOI: 10.1364/oe.518072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/06/2024] [Indexed: 04/05/2024]
Abstract
Hybrid quasiparticles produced by the strong interaction between nanostructures and excitons will exhibit optical chirality when one of the coupled components is chiral. Due to the tunability of hybrid states, the coupled system has potential applications in chiral devices and chiral sensing. However, reported chiral materials including chiral molecules and three-dimensional chiral structures in the coupled system limit the application due to the weak chiroptical responses and difficult fabrication, respectively. In this paper, we design chiral quasibound states in the continuum (q-BIC) metasurface by introducing planar symmetry-breaking and z-axis perturbation into an array structure whose unit cell is a C4 rotational symmetric disk. By tuning the polarization state of the eigenmode, a significant chiroptical response is obtained in our q-BIC metasurface. Furthermore, mode splitting is observed not only in the reflection spectrum but also in the circular dichroism (CD) spectrum in the chiral q-BIC and monolayer WS2 strong coupling system, which indicates the realization of the exciton-polariton optical chirality. More importantly, one order of magnitude difference in the reflection to left and right circularly polarized light is achieved resulting in significant CD signals. Our work provides a new strategy to realize the exciton polaritons with significant chiroptical responses, which exhibits promising applications in on-chip chiral devices.
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17
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Thönnißen V, Westphäling J, Atodiresei IL, Patureau FW. Atroposelective Chan-Evans-Lam Amination. Chemistry 2024; 30:e202304378. [PMID: 38179829 DOI: 10.1002/chem.202304378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
The synthetic control of atropoisomerism along C-N bonds is a major challenge, and methods that allow C-N atroposelective bond formation are rare. This is a problem because each atropoisomer can feature starkly differentiated biological properties. Yet, among the three most practical and applicable classical amination methods available: 1) the Cu-catalyzed Ullmann-Goldberg reaction, 2) the Pd-catalyzed Buchwald-Hartwig reaction, and 3) the Cu-catalyzed Chan-Evans-Lam reaction, none has truly been rendered atroposelective at the newly formed C-N bond. The first ever Chan-Evans-Lam atroposelective amination is herein described with a simple copper catalyst and newly designed PyrOx chiral ligand. This method should find important applications in asymmetric synthesis, in particular for medicinal chemistry.
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Affiliation(s)
- Vinzenz Thönnißen
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Johannes Westphäling
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Iuliana L Atodiresei
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Frederic W Patureau
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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18
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Qian C, Huang J, Huang T, Song L, Sun J, Li P. Organocatalytic enantioselective synthesis of C sp2-N atropisomers via formal C sp2-O bond amination. Chem Sci 2024; 15:3893-3900. [PMID: 38487218 PMCID: PMC10935709 DOI: 10.1039/d3sc06707f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/02/2024] [Indexed: 03/17/2024] Open
Abstract
Compared with well-developed construction of Csp2-Csp2 atropisomers, the synthesis of Csp2-N atropisomers remains in its infancy, which is recognized as both appealing and challenging. Herein, we achieved the first organocatalyzed asymmetric synthesis of Csp2-N atropisomers by formal Csp2-O amination. With the aid of a suitable acid, 3-alkynyl-3-hydroxyisoindolinones reacted smoothly with 1-methylnaphthalen-2-ols to afford a wide range of atropisomers by selective formation of the Csp2-N axis. Particularly, both the kinetic (Z)-products and the thermodynamic (E)-products could be selectively formed. Furthermore, the rarely used combination of two chiral Brønsted acid catalysts achieved excellent enantiocontrol, which is intriguing and unusual in organocatalysis. Based on control experiments and DFT calculations, a cascade dehydration/addition/rearrangement process was proposed. More importantly, this work provided a new plat-form for direct atroposelective construction of the chiral Csp2-N axis.
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Affiliation(s)
- Chenxiao Qian
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology Guangming Advanced Research Institute, Southern University of Science and Technology (SUSTech) Shenzhen 518055 China
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR China
| | - Jing Huang
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR China
| | - Tingting Huang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology Guangming Advanced Research Institute, Southern University of Science and Technology (SUSTech) Shenzhen 518055 China
| | - Lijuan Song
- School of Science, Harbin Institute of Technology (Shenzhen) Shenzhen 518055 China
| | - Jianwei Sun
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR China
| | - Pengfei Li
- Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology Guangming Advanced Research Institute, Southern University of Science and Technology (SUSTech) Shenzhen 518055 China
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19
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Zhang G, Yang B, Yang J, Zhang J. Pd-Catalyzed Asymmetric Larock Indole Synthesis to Access Axially Chiral N-Arylindoles. J Am Chem Soc 2024; 146:5493-5501. [PMID: 38350095 DOI: 10.1021/jacs.3c13356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Larock indole synthesis is one of the most straightforward and efficient methods for the synthesis of indoles; however, there has been no asymmetric version yet for the construction of indole-based axially chiral N-arylindoles since its initial report in 1991. Herein we report the first example of an asymmetric Larock indole synthesis by employing a chiral sulfinamide phosphine (SadPhos) ligand (Ming-Phos) with palladium. It allows rapid construction of a wide range of axially chiral N-arylindole compounds in good yields up to 98:2 er. The application of this unique chiral scaffold as an organocatalyst is promising. Furthermore, a kinetic study has revealed that the alkyne migratory insertion is the rate-determining step, which has been proven by the density functional theory (DFT) calculations. Additionally, DFT studies also suggest that the N-C dihedral difference caused by the steric hindrance of the ligand contributes to enantioselectivity control.
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Affiliation(s)
- Genwei Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Bin Yang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Junfeng Yang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
- Zhuhai Fudan Innovation Institute, Zhuhai 519000, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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20
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Li Y, Li X. Theoretical insights into the enantiodivergence induced by chiral phosphoric acid catalysis with a Lewis acid for the synthesis of N-N axially chiral atropisomers. Org Biomol Chem 2024; 22:1654-1661. [PMID: 38295370 DOI: 10.1039/d3ob02011h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
A detailed theoretical mechanistic investigation on chiral phosphoric acid (CPA)-catalyzed Paal-Knorr reactions, in the presence and absence of a Lewis acid, for the synthesis of N-N axially chiral atropisomers is described herein. Density functional theory (DFT) studies elucidate that in the absence of a Lewis acid, CPA catalyzes both the initial cyclization and the subsequent dehydroxylation processes, ambiguously identified as the rate-determining step in the reactions. Conversely, when a Lewis acid participates in the reaction, it facilitates the second dehydroxylation process with a significantly lower energy barrier, thereby reversing the rate-determining step to the initial cyclization step. It is noteworthy that in the case of N-aminoindoles, both the S-configurational transition state TS1 in the cyclization step and TS2 in the dehydroxylation process are favourable. In contrast, for the synthesis of a bispyrrole, the R-configurational TS1 and the S-configurational TS2 are dominant. Therefore, the enantiodivergence observed is essentially induced by the reversed rate-determining steps in the absence or presence of a Lewis acid in the case of a bispyrrole. Furthermore, the non-covalent interaction (NCI) and atoms-in-molecules (AIM) analysis of the TS structures reveal that the non-covalent interactions play a pivotal role in determining the enantiodivergence observed in these reactions.
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Affiliation(s)
- Yanze Li
- Department of Chemistry, College of Sciences, Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai 200444, China.
| | - Xinyao Li
- Department of Chemistry, College of Sciences, Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai 200444, China.
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21
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Yang G, He Y, Wang T, Li Z, Wang J. Atroposelective Synthesis of Planar-Chiral Indoles via Carbene Catalyzed Macrocyclization. Angew Chem Int Ed Engl 2024; 63:e202316739. [PMID: 38014469 DOI: 10.1002/anie.202316739] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 11/27/2023] [Accepted: 11/27/2023] [Indexed: 11/29/2023]
Abstract
Indole-based planar-chiral macrocycles are widely found in natural products and bioactive molecules. However, in sharp contrast to the preparation of indole-based axially chiral structures, the enantioselective catalysis of indole-based planar-chiral macrocycles is still a formidable task so far. Here we report an N-heterocyclic carbene (NHC)-catalyzed intramolecular atroposelective macrocyclization of 3-carboxaldehyde indole/pyrroles, featuring with broad substrate scope and good functional group tolerance, and allowing for a rapid access to diverse indole/pyrrole-based planar-chiral macrocycles with various tether-lengths (10-16 members) in good yields and with excellent enantioselectivities. Importantly, the indole-based macrocyclic structures with both planar and axial chirality were directly and efficiently obtained through this protocol with excellent enantioselectivities and diastereoselectivities. In addition, these synthesized planar-chiral macrocycles offer many possibilities for chemists to develop new catalysts or ligands, as well as new reactions.
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Affiliation(s)
- Gongming Yang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, China
| | - Yi He
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, China
| | - Tianyi Wang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, China
| | - Zhipeng Li
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, China
| | - Jian Wang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, China
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22
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Yamanomoto K, Yamamoto K, Yoshida S, Sato S, Akiyama T. Enantioselective synthesis of 3-( N-indolyl)quinolines containing axial and central chiralities. Chem Commun (Camb) 2024; 60:582-585. [PMID: 38095093 DOI: 10.1039/d3cc05142k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Quinoline and indole are important core structures in biologically active compounds and materials. Atropisomeric biaryls consisting of quinoline and indole are a unique class of axially chiral molecules. We report herein enantioselective synthesis of 3-(N-indolyl)quinolines having both C-N axial chirality and carbon central chirality by a photoredox Minisci-type addition reaction catalyzed by a chiral lithium phosphate/Ir-photoredox complex. The catalytic system enabled access to a unique class of 3-(N-indolyl)quinolines with high chemo-, regio-, and stereoselectivities in good yields through the appropriate choice of an acid catalyst and a photocatalyst. This is the first example of the synthesis of 3-(N-indolyl)quinoline atropisomers in a highly enantioselective manner.
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Affiliation(s)
- Ken Yamanomoto
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Kota Yamamoto
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
| | - Satoshi Yoshida
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Sota Sato
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Division of Advanced Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi 444-8787, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan.
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23
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Feng J, Liu RR. Catalytic Asymmetric Synthesis of N-N Biaryl Atropisomers. Chemistry 2024; 30:e202303165. [PMID: 37850396 DOI: 10.1002/chem.202303165] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 10/19/2023]
Abstract
Atropisomers have emerged as important structural scaffolds in natural products, drug design, and asymmetric synthesis. Recently, N-N biaryl atropisomers have drawn increasing interest due to their unique structure and relatively stable axes. However, its asymmetric synthesis remains scarce compared to its well-developed C-C biaryl analogs. In this concept, we summarize the asymmetric synthesis of N-N biaryl atropisomers including N-N pyrrole-pyrrole, N-N pyrrole-indole, N-N indole-indole, and N-N indole-carbazole, during which a series synthetic strategies are highlighted. Also, a synthetic evolution is briefly reviewed and an outlook of N-N biaryl atropisomers synthesis is offered.
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Affiliation(s)
- Jia Feng
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, NingXia Road 308#, Qingdao, 266071, China
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24
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Yang J, Xie ZY, Ye YJ, Ye SB, Wang YB, Wang WT, Qian PC, Song RJ, Sun Q, Ye LW, Li L. Ir/Zn-cocatalyzed chemo- and atroposelective [2+2+2] cycloaddition for construction of C─N axially chiral indoles and pyrroles. SCIENCE ADVANCES 2023; 9:eadk1704. [PMID: 38117883 PMCID: PMC10732529 DOI: 10.1126/sciadv.adk1704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/20/2023] [Indexed: 12/22/2023]
Abstract
Here, an Ir/Zn-cocatalyzed atroposelective [2+2+2] cycloaddition of 1,6-diynes and ynamines was developed, forging various functionalized C─N axially chiral indoles and pyrroles in generally good to excellent yields (up to 99%), excellent chemoselectivities, and high enantioselectivities (up to 98% enantiomeric excess) with wide substrate scope. This cocatalyzed strategy not only provided an alternative promising and reliable way for asymmetric alkyne [2+2+2] cyclotrimerization in an easy handle but also settled the issues of previous [Rh(COD)2]BF4-catalyzed system on the construction of C─N axial chirality such as complex operations, limited substrate scope, and low efficiency. In addition, control experiments and theoretical calculations disclosed that Zn(OTf)2 markedly reduced the barrier of migration insertion to significantly increase reaction efficiency, which was distinctly different from previous work on the Lewis acid for improving reaction yield through accelerating oxidative addition and reductive elimination.
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Affiliation(s)
- Jian Yang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Zhong-Yang Xie
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yu-Jie Ye
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Sheng-Bing Ye
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yi-Bo Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Wen-Tao Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Peng-Cheng Qian
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials and Industry Technology, Wenzhou University, Wenzhou 325000, China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Long Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials and Industry Technology, Wenzhou University, Wenzhou 325000, China
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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25
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Jiang TY, Ke YT, Wu YJ, Yao QJ, Shi BF. Pd(II)-Catalyzed atroposelective C-H olefination: synthesis of enantioenriched N-aryl peptoid atropisomers. Chem Commun (Camb) 2023; 59:13518-13521. [PMID: 37886838 DOI: 10.1039/d3cc04425d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Herein, we reported the synthesis of enantioenriched N-aryl peptoid atropisomers via Pd(II)-catalyzed atroposelective C-H olefination using the easily accessible L-pyroglutamic acid (L-pGlu-OH) as the chiral ligand. A series of optically active N-aryl peptoid atropisomers were obtained in synthetically useful yields with high enantioselectivities.
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Affiliation(s)
- Tian-Yu Jiang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
| | - Yi-Ting Ke
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
| | - Yong-Jie Wu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
| | - Qi-Jun Yao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
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26
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Zhan LW, Lu CJ, Feng J, Liu RR. Atroposelective Synthesis of C-N Vinylindole Atropisomers by Palladium-Catalyzed Asymmetric Hydroarylation of 1-Alkynylindoles. Angew Chem Int Ed Engl 2023; 62:e202312930. [PMID: 37747364 DOI: 10.1002/anie.202312930] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 09/26/2023]
Abstract
Transition-metal-catalyzed hydroarylation of unsymmetrical internal alkynes remains challenging because of the difficulty in controlling regioselectivity and stereoselectivity. Moreover, the enantioselective hydroarylation of alkynes using organoboron reagents has not been reported. Herein, we report for the first time that palladium compounds can catalyze the hydroarylation of 1-alkynylindoles with organoborons for the synthesis of chiral C-N atropisomers. A series of rarely reported vinylindole atropisomers was synthesized with excellent regio-, stereo- (Z-selectivity), and enantioselectivity under mild reaction conditions. The ready availability of organoborons and alkynes and the simplicity, high stereoselectivity, and good functional group tolerance of this catalytic system make it highly attractive.
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Affiliation(s)
- Li-Wen Zhan
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Jia Feng
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
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27
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Pang L, Wang C, Ma C, Liu J, Shi M, Yao C, Yu J, Li Q. Palladium-Catalyzed Modular Assembly of P-Stereogenic and Axially Chiral Phosphinooxazoles (PHOX) Ligands by C-P Bond Cleavage/Intermolecular C(sp 2)-H Bond Functionalization. Org Lett 2023; 25:7705-7710. [PMID: 37831783 DOI: 10.1021/acs.orglett.3c02998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
Chiral P,N-ligands are of great interest and importance in the fields of metal-catalyzed enantioselective transformations and have found numerous applications spanning drug and polymer synthesis. Here, modular assembly of diverse P-stereogenic and axially chiral phosphinooxazoles ligands is achieved through palladium-catalyzed asymmetric cleavage of C-P bond/intermolecular C-H bond functionalization in high atroposelectivities and diastereoselectivities of up to >99% ee and >25:1 dr. This protocol features broad substrate scope and provides an avenue for facile construction of new P-stereogenic and axially chiral phosphinooxazoles ligands directly from the phosphonium salts and benzoxazoles/benzothiazoles. Evaluation of the synthesized P-stereogenic and axially chiral phosphinooxazoles ligands in two model catalytic asymmetric reactions illustrates the potential of our strategy to access valuable chiral molecules.
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Affiliation(s)
- Liangzhi Pang
- Department of Applied Chemistry and School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Chun Wang
- Department of Applied Chemistry, Anhui Agricultural University, Hefei 230036, China
| | - Congyue Ma
- Department of Applied Chemistry, Anhui Agricultural University, Hefei 230036, China
| | - Jiaojiao Liu
- Department of Applied Chemistry and School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Mengke Shi
- Department of Applied Chemistry, Anhui Agricultural University, Hefei 230036, China
| | - Chuanzhi Yao
- Department of Applied Chemistry, Anhui Agricultural University, Hefei 230036, China
| | - Jie Yu
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, Hefei 230036, China
| | - Qiankun Li
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, Hefei 230036, China
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28
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Han TJ, Guan CY, Li N, Dong R, Xu LP, Xiao X, Wang MC, Mei GJ. Catalytic atroposelective synthesis of heterobiaryls with vicinal C-C and N-N diaxes via dynamic kinetic resolution. iScience 2023; 26:107978. [PMID: 37822512 PMCID: PMC10562788 DOI: 10.1016/j.isci.2023.107978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/07/2023] [Accepted: 09/15/2023] [Indexed: 10/13/2023] Open
Abstract
Reported herein is a highly efficient dynamic kinetic resolution protocol for the atroposelective synthesis of heterobiaryls with vicinal C-C and N-N diaxes. Atropisomers bearing vicinal diaxes mainly exist in o-triaryls, while that of biaryls is highly challenging in terms of the concerted rotation and deplanarization effects. The combination of C-C biaryl with N-N nonbiaryl delivers a novel class of vicinal-diaxis heterobiaryls. For their atroposelective synthesis, the dynamic kinetic resolution enabled by either quinine-catalyzed allylation or isothiourea-catalyzed acylation has been developed, allowing the preparation of a wide range of vicinal-axis heterobiaryls in good yields with excellent enantioselectivities. Atropisomerization experiments revealed that the C-C bond rotation led to diastereomers, and the N-N bond rotation offered enantiomers. Besides, this protocol could be extended to kinetic resolution by employing substrates with a more hindered axis.
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Affiliation(s)
- Tian-Jiao Han
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Chun-Yan Guan
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Na Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, Shandong, China
| | - Rui Dong
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Li-Ping Xu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, Shandong, China
| | - Xiao Xiao
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, People’s Republic China
| | - Min-Can Wang
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
| | - Guang-Jian Mei
- College of Chemistry, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, China
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29
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Kasahara R, Toyoda T, Fukasawa S, Takeuchi A, Sato A, Hori A, Kitagawa O. Chirality Transfer Intramolecular Pauson-Khand Reaction with N-C Axially Chiral Sulfonamides Bearing an Ene-Yne Structure. Org Lett 2023; 25:7390-7394. [PMID: 37782042 DOI: 10.1021/acs.orglett.3c02893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
An intramolecular Pauson-Khand reaction with enantioenriched N-C axially chiral N-allyl-N-(2-alkynylphenyl)sulfonamide derivatives proceeded with complete chirality transfer from axial chirality (P configuration) to central chirality (R configuration), affording chiral nitrogen-containing tricyclic compounds (tetrahydrocyclopentaquinolin-2-one derivatives).
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Affiliation(s)
- Ryohei Kasahara
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Tatsuya Toyoda
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Sota Fukasawa
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Aoi Takeuchi
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Azusa Sato
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Akiko Hori
- Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Osamu Kitagawa
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
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30
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Feng J, Lu CJ, Liu RR. Catalytic Asymmetric Synthesis of Atropisomers Featuring an Aza Axis. Acc Chem Res 2023; 56:2537-2554. [PMID: 37694726 DOI: 10.1021/acs.accounts.3c00419] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
ConspectusAtropisomers bearing a rotation-restricted axis are common structural units in natural products, chiral ligands, and drugs; thus, the prevalence of asymmetric synthesis has increased in recent decades. Research into atropisomers featuring an N-containing axis (N-X atropisomers) remains in its infancy compared with the well-developed C-C atropisomer analogue. Notably, N-X atropisomers could offer divergent scaffolds, which are extremely important in bioactive molecules. The asymmetric synthesis of N-X atropisomers is recognized as both appealing and challenging. Recently, we devoted our efforts to the catalytic asymmetric synthesis of N-X atropisomers, benzimidazole-aryl N-C atropisomers, indole-aryl N-C atropisomers, hydrogen-bond-assisted N-C atropisomers, pyrrole-pyrrole N-N atropisomers, pyrrole-indole N-N atropisomers, and indole-indole N-N atropisomers. To obtain the N-C atropisomers, an asymmetric Buchwald-Hartwig reaction of amidines or enamines was employed. Using a Pd(OAc)2/(S)-BINAP or Pd(OAc)2/(S)-Xyl-BINAP catalyst system, benzimidazole-aryl N-C atropisomers and indole-aryl N-C atropisomers were readily obtained. To address the issue of the reduced stability of the diarylamine axis, a six-membered intramolecular N-H-O hydrogen bond was introduced into the N-C atropisomer scaffold. A tandem N-arylation/oxidation process was used for the chiral phosphoric acid (CPA)-catalyzed asymmetric synthesis of N-aryl quinone atropisomers. For N-N atropisomers, a copper-mediated asymmetric Friedel-Crafts alkylation/arylation reaction was developed. The desymmetrization process was completed successfully via a Cu(OTf)2/chiral bisoxazoline or (CuOTf)·Tol/bis(phosphine) dioxide system, thereby achieving the first catalytic asymmetric synthesis of N/N bipyrrole atropisomers. Asymmetric Buchwald-Hartwig amination of enamines was utilized to provide N-N bisindole atropisomers with excellent stereogenic control. This was the first asymmetric synthesis of N-N atropisomers featuring a bisindole structural scaffold using the de novo indole construction strategy. The asymmetric N-N heterobiaryl atropisomer synthesis was substantially facilitated using palladium-catalyzed transient directing group (TDG)-mediated C-H functionalization. Atropisomeric alkenylation, allylation, or alkynylation was accomplished using the Pd(OAc)2/l-tert-leucine system. Herein, we summarize our work on the palladium-, copper-, and CPA-catalyzed asymmetric syntheses of N-C and N-N atropisomers. Furthermore, the application of our work in the synthesis of bioactive molecule analogues and axially chiral ligands is demonstrated. Subsequently, the stability of the chiral N-containing axis is briefly discussed in terms of single crystals and obtained rotational barriers. Finally, an outlook on the asymmetric N-X atropisomer synthesis is provided.
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Affiliation(s)
- Jia Feng
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
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31
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Wang X, Si XJ, Sun Y, Wei Z, Xu M, Yang D, Shi L, Song MP, Niu JL. C-N Axially Chiral Heterobiaryl Isoquinolinone Skeletons Construction via Cobalt-Catalyzed Atroposelective C-H Activation/Annulation. Org Lett 2023; 25:6240-6245. [PMID: 37595028 DOI: 10.1021/acs.orglett.3c01685] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
Herein, the atroposelective construction of isoquinolinones bearing a C-N chiral axis has been successfully developed via a Co-catalyzed C-H bond activation and annulation process. This conversion can be effectively carried out in an environmentally friendly oxygen atmosphere to generate the target C-N axially chiral frameworks with excellent reactivities and enantioselectivities (up to >99% ee) in the absence of any additives. Additionally, the current protocol has proved to be an alternative approach for the C-N axial architectures fabrication under electrochemical conditions for cobalt/Salox catalysis, and this strategy allowed the efficient and atom-economical synthesis of various axially chiral isoquinolinones under mild reaction conditions.
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Affiliation(s)
- Xinhai Wang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Xiao-Ju Si
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Yingjie Sun
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Zhisen Wei
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Miao Xu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Dandan Yang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jun-Long Niu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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32
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Li T, Shi L, Wang X, Yang C, Yang D, Song MP, Niu JL. Cobalt-catalyzed atroposelective C-H activation/annulation to access N-N axially chiral frameworks. Nat Commun 2023; 14:5271. [PMID: 37644016 PMCID: PMC10465517 DOI: 10.1038/s41467-023-40978-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/17/2023] [Indexed: 08/31/2023] Open
Abstract
The N-N atropisomer, as an important and intriguing chiral system, was widely present in natural products, pharmaceutical lead compounds, and advanced material skeletons. The anisotropic structural characteristics caused by its special axial rotation have always been one of the challenges that chemists strive to overcome. Herein, we report an efficient method for the enantioselective synthesis of N-N axially chiral frameworks via a cobalt-catalyzed atroposelective C-H activation/annulation process. The reaction proceeds under mild conditions by using Co(OAc)2·4H2O as the catalyst with a chiral salicyl-oxazoline (Salox) ligand and O2 as an oxidant, affording a variety of N-N axially chiral products with high yields and enantioselectivities. This protocol provides an efficient approach for the facile construction of N-N atropisomers and further expands the range of of N-N axially chiral derivatives. Additionally, under the conditions of electrocatalysis, the desired N-N axially chiral products were also successfully achieved with good to excellent efficiencies and enantioselectivities.
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Affiliation(s)
- Tong Li
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Xinhai Wang
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Chen Yang
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Dandan Yang
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China.
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Jun-Long Niu
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China.
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33
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Wang X, Luo Y, Zhao J, Luo S. CPA-catalyzed asymmetric domino thia-Michael/aldol reactions for simultaneous chiral center and axial chirality formation. Org Biomol Chem 2023; 21:6697-6701. [PMID: 37554057 DOI: 10.1039/d3ob01087b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
A highly enantio- and diastereoselective domino thia-Michael/aldol reaction applying 5H-dibenzo[a,c][7]annulen-5-one as a Michael acceptor, catalyzed by a chiral phosphoric acid (CPA), has been developed. The bridged biaryl adduct contains multiple stereogenic centers in the bridging linkage as well as a thermodynamically controlled stereogenic axis. The energy difference between the two atropodiastereomers is about 9.1 kcal mol-1, which accounts for the observed excellent diastereoselectivity (>20 : 1).
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Affiliation(s)
- Xilong Wang
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China.
- University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China
| | - Yu Luo
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China.
- University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China
| | - Jiaji Zhao
- School of Medicine and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528400, China.
| | - Shuang Luo
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China.
- University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, 100049, China
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34
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Zhu X, Wu H, Wang Y, Huang G, Wang F, Li X. Rhodium-catalyzed annulative approach to N-N axially chiral biaryls via C-H activation and dynamic kinetic transformation. Chem Sci 2023; 14:8564-8569. [PMID: 37592987 PMCID: PMC10430736 DOI: 10.1039/d3sc02800c] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/13/2023] [Indexed: 08/19/2023] Open
Abstract
N-N axially chiral biaryls represent a rarely explored class of atropisomeric compounds. We hereby report rhodium-catalyzed enantioselective [4 + 2] oxidative annulation of internal alkynes with benzamides bearing two classes of N-N directing groups. The coupling occurs under mild conditions via NH and CH annulation through the dynamic kinetic transformation of the directing group and is highly enantioselective with good functional tolerance. Computational studies of a coupling system at the DFT level has been conducted, and the alkyne insertion was identified as the enantio-determining as well as the turnover-limiting step.
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Affiliation(s)
- Xiaohan Zhu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Hongli Wu
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University Tianjin 300072 China
| | - Yishou Wang
- Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University Qingdao 266237 China
| | - Genping Huang
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University Tianjin 300072 China
| | - Fen Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
- Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University Qingdao 266237 China
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35
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Arunachalampillai A, Chandrappa P, Cherney A, Crockett R, Doerfler J, Johnson G, Kommuri VC, Kyad A, McManus J, Murray J, Myren T, Fine Nathel N, Ndukwe I, Ortiz A, Reed M, Rui H, Silva Elipe MV, Tedrow J, Wells S, Yacoob S, Yamamoto K. Atroposelective Brønsted Acid-Catalyzed Photocyclization to Access Chiral N-Aryl Quinolones with Low Rotational Barriers. Org Lett 2023; 25:5856-5861. [PMID: 37499637 DOI: 10.1021/acs.orglett.3c02117] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Herein, a novel route to atropisomeric N-aryl quinolones with low rotational barriers is demonstrated, leveraging a dual photochemical/organocatalytic approach to the required ring closure in up to 94% yield and up to >99% ee. The use of a continuous flow system allows for impurity suppression and enables rapid scale-up to a decagram scale.
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Affiliation(s)
| | | | - Alan Cherney
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Richard Crockett
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Jaika Doerfler
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Gregory Johnson
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | | | - Ali Kyad
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Joshua McManus
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - James Murray
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Tessa Myren
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Noah Fine Nathel
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Ikenna Ndukwe
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Adrian Ortiz
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Margaret Reed
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Huan Rui
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | | | - Jason Tedrow
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Shane Wells
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Suha Yacoob
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Kumiko Yamamoto
- Amgen, One Amgen Center Drive, Thousand Oaks, California 91320, United States
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36
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Mishra K, Guyon D, San Martin J, Yan Y. Chiral Perovskite Nanocrystals for Asymmetric Reactions: A Highly Enantioselective Strategy for Photocatalytic Synthesis of N-C Axially Chiral Heterocycles. J Am Chem Soc 2023; 145:17242-17252. [PMID: 37499231 PMCID: PMC10926773 DOI: 10.1021/jacs.3c04593] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Catalytic approaches to generate enantiospecific chiral centers are the major premise of modern organic chemistry. Heterogeneous catalysis is responsible for the vast majority of chemical transformations, yet the direct employment of chiral solid catalysts for asymmetric synthesis is mostly overlooked. Here, we demonstrated that a heterogeneous metal-halide perovskite nanocrystal (NC) catalyst is active for asymmetric organic synthesis under visible-light activation. Chiral 1-phenylethylamine (PEA)-hybridized perovskite PEA/CsPbBr3 NC photocatalysts exhibit an enantioselective (up to 99% enantiomer excess, ee) avenue to produce N-C axially chiral N-heterocycles, i.e., N-arylindoles from N-arylamine photo-oxidation. Mechanistic investigation indicated a discriminated prochiral binding of the N-arylamine substrates onto the chiral-NC surface with ca. -2.4 kcal/mol enantiodifferentiation. Our perovskite NC heterogeneous catalytic system not only demonstrates a promising strategy to address the long-term challenges in atroposelective pharmaceutical scaffold synthesis but also paves the road to directly employ chiral solids for asymmetric synthesis.
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Affiliation(s)
- Kanchan Mishra
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Dylana Guyon
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Jovan San Martin
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Yong Yan
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
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37
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Wang Y, Zhu X, Pan D, Jing J, Wang F, Mi R, Huang G, Li X. Rhodium-catalyzed enantioselective and diastereodivergent access to diaxially chiral heterocycles. Nat Commun 2023; 14:4661. [PMID: 37537163 PMCID: PMC10400608 DOI: 10.1038/s41467-023-39968-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 07/03/2023] [Indexed: 08/05/2023] Open
Abstract
N-N axially chiral biaryls represent a rarely explored class of atropisomers. Reported herein is construction of diverse classes of diaxially chiral biaryls containing N-N and C-N/C-C diaxes in distal positions in excellent enantioselectivity and diastereoselectivity. The N-N chiral axis in the products provides a handle toward solvent-driven diastereodivergence, as has been realized in the coupling of a large scope of benzamides and sterically hindered alkynes, affording diaxes in complementary diastereoselectivity. The diastereodivergence has been elucidated by computational studies which revealed that the hexafluoroisopropanol (HFIP) solvent molecule participated in an unusual manner as a solvent as well as a ligand and switched the sequence of two competing elementary steps, resulting in switch of the stereoselectivity of the alkyne insertion and inversion of the configuration of the C-C axis. Further cleavage of the N-directing group in the diaxial chiral products transforms the diastereodivergence to enantiodivergence.
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Affiliation(s)
- Yishou Wang
- Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University, 266237, Qingdao, China
| | - Xiaohan Zhu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710062, Xi'an, China
| | - Deng Pan
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, 300072, Tianjin, China
| | - Jierui Jing
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710062, Xi'an, China
| | - Fen Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710062, Xi'an, China.
| | - Ruijie Mi
- Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University, 266237, Qingdao, China
| | - Genping Huang
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, 300072, Tianjin, China.
| | - Xingwei Li
- Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University, 266237, Qingdao, China.
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710062, Xi'an, China.
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38
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Li Y, Duan XY, Yang C, Wei Y, Li J, Ren X, Qi J. Atroposelective Access to Dihydropyridinones with C-N Axial and Point Chirality via NHC-Catalyzed [3 + 3] Annulation. J Org Chem 2023. [PMID: 37449806 DOI: 10.1021/acs.joc.3c00854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
An N-heterocyclic carbene-catalyzed atroposelective [3 + 3] annulation of enals with 2-aminomaleate derivatives is described. A series of substituted dihydropyridones bearing both C-N axis and point chirality were synthesized with good diastereo- and enantioselectivity under mild conditions. This efficient strategy successfully superpositions an extra point chiral element with an axial backbone, and the generated structurally interesting atropisomers may have potential application in drug discovery.
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39
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Si XJ, Zhao X, Wang J, Wang X, Zhang Y, Yang D, Song MP, Niu JL. Cobalt-catalyzed enantioselective C-H/N-H annulation of aryl sulfonamides with allenes or alkynes: facile access to C-N axially chiral sultams. Chem Sci 2023; 14:7291-7303. [PMID: 37416705 PMCID: PMC10321536 DOI: 10.1039/d3sc01787g] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/08/2023] [Indexed: 07/08/2023] Open
Abstract
Herein we report a cobalt-catalyzed enantioselective C-H/N-H annulation of aryl sulfonamides with allenes and alkynes, using either chemical or electrochemical oxidation. By using O2 as the oxidant, the annulation with allenes proceeds efficiently with a low catalyst/ligand loading of 5 mol% and tolerates a wide range of allenes, including 2,3-butadienoate, allenylphosphonate, and phenylallene, resulting in C-N axially chiral sultams with high enantio-, regio-, and position selectivities. The annulation with alkynes also exhibits excellent enantiocontrol (up to >99% ee) with a variety of functional aryl sulfonamides, and internal and terminal alkynes. Furthermore, electrochemical oxidative C-H/N-H annulation with alkynes is achieved in a simple undivided cell, demonstrating the versatility and robustness of the cobalt/Salox system. The gram-scale synthesis and asymmetric catalysis further highlight the practical utility of this method.
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Affiliation(s)
- Xiao-Ju Si
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Xiaofang Zhao
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Jianli Wang
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Xinhai Wang
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Yuanshuo Zhang
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Dandan Yang
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Jun-Long Niu
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 P. R. China
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40
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Wang C, Sun J. Atroposelective Synthesis of N-N Axially Chiral Bipyrroles via Rhodium-Catalyzed C-H Insertion Reaction. Org Lett 2023. [PMID: 37366557 DOI: 10.1021/acs.orglett.3c01509] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
An atroposelective synthesis of bipyrroles with an axially chiral N-N bond has been established via a rhodium-catalyzed C-H bond insertion reaction to provide the desired atropisomers in good yields (up to 97% yield) with good to excellent enantioselectivities (up to 99% ee).
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Affiliation(s)
- Changkai Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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41
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de Ceuninck van Capelle LA, Wales SM, Macdonald JM, Kruger M, Richardson C, Gardiner MG, Hyland CJT. Synthesis and Atropisomeric Properties of Benzoazepine-Fused Isoindoles. J Org Chem 2023. [PMID: 37326851 DOI: 10.1021/acs.joc.3c00607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Atropisomeric, bench-stable benzoazepine-fused isoindoles were synthesized via oxidation from isoindoline precursors. Using the isoindoles 5d-f as models, the stereochemistry and conformational folding of the systems were examined. Chiral UHPLC was used to analyze the rate of racemization and calculate the Gibbs free energy of enantiomerization (ΔG‡Enant). X-ray crystallography, 1H NMR spectroscopy, and DFT calculations were used to elucidate the three axes of chirality and clarify the structural factors contributing to ΔG‡Enant. Tandem rotation around the axes of chirality precludes the formation of diastereomers, with rotational restriction of the Caryl-Nsulfonamide bond determined as the moderator of atropisomeric stability in the system, affected primarily by steric hindrance as well as by π-stacking interactions facilitated by the folded conformation of the sulfonamide over the isoindole moiety.
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Affiliation(s)
- Lillian A de Ceuninck van Capelle
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Steven M Wales
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - James M Macdonald
- CSIRO Manufacturing, Biomedical Manufacturing Program, Bag 10, Clayton South, Melbourne, Victoria 3168, Australia
| | - Megan Kruger
- CSIRO Manufacturing, Materials Characterisation and Modelling Program, Bag 10, Clayton South, Melbourne, Victoria 3168, Australia
| | - Christopher Richardson
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Michael G Gardiner
- School of Physical Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
- Research School of Chemistry, Australian National University, Acton, Canberra, Australian Capital Territory 2601, Australia
| | - Christopher J T Hyland
- Molecular Horizons Research Institute, School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia
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42
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Zhou L, Li Y, Li S, Shi Z, Zhang X, Tung CH, Xu Z. Asymmetric rhodium-catalyzed click cycloaddition to access C-N axially chiral N-triazolyl indoles. Chem Sci 2023; 14:5182-5187. [PMID: 37206396 PMCID: PMC10189892 DOI: 10.1039/d3sc00610g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 04/19/2023] [Indexed: 05/21/2023] Open
Abstract
The copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction is regarded as a prime example of "click chemistry", but the asymmetric click cycloaddition of internal alkynes still remains challenging. A new asymmetric Rh-catalyzed click cycloaddition of N-alkynylindoles with azides was developed, providing atroposelective access to C-N axially chiral triazolyl indoles, a new type of heterobiaryl, with excellent yields and enantioselectivity. This asymmetric approach is efficient, mild, robust and atom-economic, and features very broad substrate scope with easily available Tol-BINAP ligands.
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Affiliation(s)
- Li Zhou
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Yankun Li
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Shunian Li
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Zhenwei Shi
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Xue Zhang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Chen-Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 PR China
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University No. 18 Shilongshan Road Hangzhou 310024 China
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43
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Pu X, Zhang Y, He X, Zhang X, Jiang L, Cao R, Kin Tse M, Qiu L. Synthesis of
N
‐Substituted 4‐Quinolones via Palladium‐Catalyzed Enantioselective C−N Coupling and Base‐Promoted Reactions. Adv Synth Catal 2023. [DOI: 10.1002/adsc.202300153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Affiliation(s)
- Xiaoyun Pu
- School of Chemistry Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Yaqi Zhang
- School of Chemistry Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Xiaobo He
- School of Chemistry Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Xinhuan Zhang
- School of Chemistry Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Long Jiang
- Instrumental Analysis and Research Centre Sun Yat-sen University Guangzhou 510275 China
| | - Rihui Cao
- School of Chemistry Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery Sun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Man Kin Tse
- Guangzhou Lee & Man Technology Company Limited 8 Huanshi Avenue South, Nansha Guangzhou 511458 People's Republic of China
| | - Liqin Qiu
- School of Chemistry Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery Sun Yat-sen University Guangzhou 510006 People's Republic of China
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44
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Wang LY, Miao J, Zhao Y, Yang BM. Chiral Acid-Catalyzed Atroposelective Indolization Enables Access to 1,1'-Indole-Pyrroles and Bisindoles Bearing a Chiral N-N Axis. Org Lett 2023; 25:1553-1557. [PMID: 36857743 DOI: 10.1021/acs.orglett.3c00237] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
We present herein a highly atroposelective indolization for the efficient synthesis of 1,1'-biheteroaryls bearing a chiral N-N axis. Under the cooperative catalysis of chiral phosphoric acid and InBr3, the reactions between 2,3-diketoesters and 1,3-dione-derived enamines resulted in a highly enantioselective construction of 1,1'-pyrrole-indoles with up to 92% yield, 94% enantiomeric excess (ee), or bisindoles in up to 92% ee. Derivatizations of these compounds to diverse functionalized N-N linked axially chiral biheteroaryls have also been demonstrated.
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Affiliation(s)
- Luo-Yu Wang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China.,Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
| | - Jiapei Miao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
| | - Yu Zhao
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China.,Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
| | - Bin-Miao Yang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
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45
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Atroposelective desymmetrization of 2-arylresorcinols via Tsuji-Trost allylation. Commun Chem 2023; 6:42. [PMID: 36841918 PMCID: PMC9968306 DOI: 10.1038/s42004-023-00839-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 02/13/2023] [Indexed: 02/27/2023] Open
Abstract
Palladium-catalyzed asymmetric allylic alkylation has proven to be a powerful method for the preparation of a wide variety of chiral molecules. However, the catalytic and atroposelective allylic alkylation is still rare and challenging, especially for biaryl substrates. Herein, we report the palladium-catalyzed desymmetric and atroposelective allylation, in which the palladium complex with a chiral phosphoramidite ligand enables desymmetrization of nucleophilic 2-arylresorcinols in a highly enantioselective manner. With the aid of the secondary kinetic resolution effect, a wide variety of substrates containing a hydroxymethyl group at the bottom aromatic ring are able to provide O-allylated products up to 98:2 er. Computational studies show an accessible quadrant of the allylpalladium complex and provide three plausible transition states with intra- or intermolecular hydrogen bonding. The energetically favorable transition state is in good agreement with the observed enantioselectivity and suggests that the catalytic reaction would proceed with an intramolecular hydrogen bond.
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46
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Lu CJ, Xu Q, Feng J, Liu RR. The Asymmetric Buchwald-Hartwig Amination Reaction. Angew Chem Int Ed Engl 2023; 62:e202216863. [PMID: 36535894 DOI: 10.1002/anie.202216863] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Over the past few decades, the Buchwald-Hartwig reaction has emerged as a powerful tool for forging C-N bonds, and has been vital to the pharmaceuticals, materials, and catalysis fields. However, asymmetric Buchwald-Hartwig amination reactions for constructing centered chirality, planar chirality, and axial chirality remain in their infancy owing to limited substrate scope and laggard ligand design. The recent surge in interest in the synthesis of C-N/N-N atropisomers, has witnessed a renaissance in asymmetric Buchwald-Hartwig amination chemistry as the first practical protocol for the preparation of C-N atropisomers. This review highlights reported asymmetric Buchwald-Hartwig amination protocols and provides a brief overview of their chemical practicality.
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Affiliation(s)
- Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao, 266071, China
| | - Qi Xu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao, 266071, China
| | - Jia Feng
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao, 266071, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308, Qingdao, 266071, China
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47
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Kouhdareh J, Keypour H, Alavinia S, Maryamabadi A. Pd(II)-immobilized on a novel covalent imine framework (COF-BASU1) as an efficient catalyst for asymmetric Suzuki coupling. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Thönnißen V, Atodiresei IL, Patureau FW. Atroposelective Nenitzescu Indole Synthesis. Chemistry 2023; 29:e202300279. [PMID: 36725685 DOI: 10.1002/chem.202300279] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/03/2023]
Abstract
In the past decade, compounds bearing a stereogenic C-N axis have gained significant attention in fields ranging from ligand to drug design. Yet, the atroposelective synthesis of these molecules remains a considerable challenge. In contrast to recent methods using more advanced chiral catalysts, a very simply accessed Jacobsen-type chromium(III)-salen complex was used here as a chiral enantiopure Lewis acid catalyst for a highly atroposelective Nenitzescu indole synthesis. Mild reaction conditions afforded various 5-hydroxybenzo[g]indoles in up to 97 % yield. Moreover, through a simple work-up, very high enantiomeric excesses of up to 99 % could be obtained.
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Affiliation(s)
- Vinzenz Thönnißen
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Iuliana L Atodiresei
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Frederic W Patureau
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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49
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Peng X, Rahim A, Peng W, Jiang F, Gu Z, Wen S. Recent Progress in Cyclic Aryliodonium Chemistry: Syntheses and Applications. Chem Rev 2023; 123:1364-1416. [PMID: 36649301 PMCID: PMC9951228 DOI: 10.1021/acs.chemrev.2c00591] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Indexed: 01/18/2023]
Abstract
Hypervalent aryliodoumiums are intensively investigated as arylating agents. They are excellent surrogates to aryl halides, and moreover they exhibit better reactivity, which allows the corresponding arylation reactions to be performed under mild conditions. In the past decades, acyclic aryliodoniums are widely explored as arylation agents. However, the unmet need for acyclic aryliodoniums is the improvement of their notoriously low reaction economy because the coproduced aryl iodides during the arylation are often wasted. Cyclic aryliodoniums have their intrinsic advantage in terms of reaction economy, and they have started to receive considerable attention due to their valuable synthetic applications to initiate cascade reactions, which can enable the construction of complex structures, including polycycles with potential pharmaceutical and functional properties. Here, we are summarizing the recent advances made in the research field of cyclic aryliodoniums, including the nascent design of aryliodonium species and their synthetic applications. First, the general preparation of typical diphenyl iodoniums is described, followed by the construction of heterocyclic iodoniums and monoaryl iodoniums. Then, the initiated arylations coupled with subsequent domino reactions are summarized to construct polycycles. Meanwhile, the advances in cyclic aryliodoniums for building biaryls including axial atropisomers are discussed in a systematic manner. Finally, a very recent advance of cyclic aryliodoniums employed as halogen-bonding organocatalysts is described.
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Affiliation(s)
- Xiaopeng Peng
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
- State
Key Laboratory of Oncology in South China, Collaborative Innovation
Center for Cancer Medicine, Sun Yat-sen
University Cancer Center, 651 Dongfeng East Road, Guangzhou510060, P. R. China
| | - Abdur Rahim
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei230026, P. R. China
| | - Weijie Peng
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
| | - Feng Jiang
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
| | - Zhenhua Gu
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei230026, P. R. China
| | - Shijun Wen
- State
Key Laboratory of Oncology in South China, Collaborative Innovation
Center for Cancer Medicine, Sun Yat-sen
University Cancer Center, 651 Dongfeng East Road, Guangzhou510060, P. R. China
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50
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Rodríguez-Salamanca P, de Gonzalo G, Carmona JA, López-Serrano J, Iglesias-Sigüenza J, Fernández R, Lassaletta JM, Hornillos V. Biocatalytic Atroposelective Synthesis of Axially Chiral N-Arylindoles via Dynamic Kinetic Resolution. ACS Catal 2022. [DOI: 10.1021/acscatal.2c06175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Patricia Rodríguez-Salamanca
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Gonzalo de Gonzalo
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), C/Prof. García González, 1, 41012 Sevilla, Spain
| | - José A. Carmona
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Joaquín López-Serrano
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), C/Prof. García González, 1, 41012 Sevilla, Spain
| | - Javier Iglesias-Sigüenza
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), C/Prof. García González, 1, 41012 Sevilla, Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), C/Prof. García González, 1, 41012 Sevilla, Spain
| | - José M. Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Valentín Hornillos
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO−CINQA), C/Prof. García González, 1, 41012 Sevilla, Spain
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