301
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Zuo H, Zhong F. Reactivity Modulation of Labile Quinones and Biomimetic Catalytic Transformations. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202108032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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302
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Zhang H, Shi F. Advances in Catalytic Asymmetric Reactions Using 2-Indolylmethanols as Platform Molecules. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202203018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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303
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Frey J, Hou X, Ackermann L. Atropoenantioselective Palladaelectro-Catalyzed Anilide C–H Olefinations Viable with Natural Sunlight as Sustainable Power Source. Chem Sci 2022; 13:2729-2734. [PMID: 35340853 PMCID: PMC8890107 DOI: 10.1039/d1sc06135f] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 02/09/2022] [Indexed: 11/26/2022] Open
Abstract
Enantioselective electrocatalyzed transformations represent a major challenge. We herein achieved atropoenantioselective pallada-electrocatalyzed C–H olefinations and C–H allylations with high efficacy and enantioselectivity under exceedingly mild reaction conditions. With (S)-5-oxoproline as the chiral ligand, activated and non-activated olefins were suitable substrates for the electro-C–H activations. Dual catalysis was devised in terms of electro-C–H olefination, along with catalytic hydrogenation. Challenging enantiomerically-enriched chiral anilide scaffolds were thereby obtained with high levels of enantio-control in the absence of toxic and cost-intensive silver salts. The resource-economy of the transformation was even improved by directly employing renewable solar energy. Asymmetric pallada-electrocatalyzed C–H activation of achiral anilides were accomplished by catalyst control with high levels of enantioselectivity. Dual catalysis was devised, while photovoltaic cells could be used to empower the electrocatalysis.![]()
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Affiliation(s)
- Johanna Frey
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 237077 Göttingen Germany http://www.ackermann.chemie.uni-goettingen.de/
| | - Xiaoyan Hou
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 237077 Göttingen Germany http://www.ackermann.chemie.uni-goettingen.de/
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 237077 Göttingen Germany http://www.ackermann.chemie.uni-goettingen.de/
- Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
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304
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Xiao X, Lu YJ, Tian HY, Zhou HJ, Li JW, Yao YP, Ke M, Chen FE. Organocatalytic atroposelective N-alkylation: divergent synthesis of axially chiral sulfonamides and biaryl amino phenols. Org Chem Front 2022. [DOI: 10.1039/d2qo00219a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Axial chirality exists ubiquitously in numerous natural products and has been extensively recognized for decades in pharmaceuticals and enantioselective transformations. The development of efficient methodologies to obtain enantiopure structures bearing...
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305
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Jiayong Z, Xin-Yuan L. Single-Step Synthesis of Atropisomers with Vicinal C—C and C—N Diaxes via Cobalt-Catalyzed C—H Activation. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202200062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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306
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Stereoselective construction of atropisomers featuring a C–N chiral axis. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2021.12.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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307
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Min XL, Zhang XL, Shen R, Zhang Q, He Y. Recent advances in the catalytic asymmetric construction of atropisomers by central-to-axial chirality transfer. Org Chem Front 2022. [DOI: 10.1039/d1qo01699g] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We highlighted the recent advances in the field of central-to-axial chirality transfer for the synthesis of axially chiral molecules.
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Affiliation(s)
- Xiao-Long Min
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiu-Lian Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Rui Shen
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qiang Zhang
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Ying He
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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308
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Cen S, Zhang Z. Synthesis of Biphenanthrol-Based Confined Chiral Phosphoric Acid. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202203019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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309
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Chen JF, Shi J, Yin C, Cui X, Li G, Tang Z, Zhao J. Synthesis of axially chiral N-aryl benzimidazoles via chiral phosphoric acid catalyzed enantioselective oxidative aromatization. NEW J CHEM 2022. [DOI: 10.1039/d1nj06092a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hantzsch ester and benzothiazoline have been extensively used as H2 donors in enantioselective transfer hydrogenation of C=N bond during the past several decades. However, the corresponding Hantzsch pyridine and benzothiazoles...
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310
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Design and Application of Axially Chiral Styrene-Based Thiourea-Tertiary Amine Catalysts. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202200009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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311
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Xu Y, Zhai TY, Xu Z, Ye LW. Recent advances towards organocatalytic enantioselective desymmetrizing reactions. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2021.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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312
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Liu W, Yang X. Asymmetric Synthesis of Indolyl C—N Atropoisomers through Enantioselective Electrophilic Amination. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202200042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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313
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Design and Synthesis of Axially Chiral Aryl-Pyrroloindoles via the Strategy of Organocatalytic Asymmetric (2 + 3) Cyclization. FUNDAMENTAL RESEARCH 2022. [DOI: 10.1016/j.fmre.2022.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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314
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Batabyal M, Jain S, Upadhyay A, Raju S, Kumar S. A Base-Free Copper-Assisted Synthesis of C2-Symmetric Spirotelluranes and Biaryls Based on Divergent Stoichiometry of Na2Te. Chem Commun (Camb) 2022; 58:7050-7053. [DOI: 10.1039/d2cc02181a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A one pot Cu(I)-assisted synthetic methodology has been developed for the preparation of biologically important C2-symmetric spirodiaza, benzyloxy, benzoxytelluranes from 2-bromo-N-aryl benzamides, benzyl alcohols, and benzoic acid by using tellurium...
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315
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Zhu D, Chen ZM. Application of Chiral Lewis Base/Brønsted Acid Synergistic Catalysis Strategy in Enantioselective Synthesis of Organic Sulfides. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202208032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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316
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Shao YD, Feng JS, Han DD, Pan KH, Zhang L, Wang YF, Ma ZH, Wang PR, Yin M, Cheng DJ. Construction of axially chiral styrene-type allylamines via chiral phosphoric acid-catalyzed asymmetric reductive amination. Org Chem Front 2022. [DOI: 10.1039/d1qo01672e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The first enantioselective synthesis of axially chiral styrene-type allylamines through chiral phosphoric acid mediated atroposelective reductive amination of 1-enal substituted 2-naphthols is achieved.
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Affiliation(s)
- You-Dong Shao
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Jin-Shuo Feng
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Dan-Dan Han
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Kang-Hui Pan
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Ling Zhang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Yi-Fan Wang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Zhong-Hui Ma
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Pei-Ru Wang
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Mingjing Yin
- School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Dao-Juan Cheng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
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317
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Nakamura T, Ishikawa H, Ban K, Yoshida Y, Mino T, Kasashima Y, Sakamoto M. Attrition-Enhanced Asymmetric Transformation of Axially Chiral Nicotinamides by Dynamic Chiral Salt Formation. Chempluschem 2021; 87:e202100504. [PMID: 35023638 DOI: 10.1002/cplu.202100504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/28/2021] [Indexed: 12/30/2022]
Abstract
Atroposelective resolution for axially chiral nicotinamides was achieved by dynamic chiral salt formation with L-DBTA using six types of nicotinamides that could not be optically resolved by the preferential crystallization method. Kinetic studies of their racemization indicated that the chiral conformation was retained for a significant period of time. Two methods of crystallization-induced asymmetric transformation were examined by dynamic diastereomeric salt formation: solvent evaporation from a supersaturated solution, and attrition-enhanced asymmetric transformation. The attrition method was more effective for asymmetric amplification of diastereomeric salts of axially chiral materials. Attrition of equimolar amount of the nicotinamide salts with L-DBTA converged to one diastereomer salts, and the corresponding enantiomers in 87-99 % ee were obtained after the chiral acid was removed. Changing the ratio of two of the nicotinamides with L-DBTA to 1 : 2 inverted the axial chirality.
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Affiliation(s)
- Takumi Nakamura
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Hiroki Ishikawa
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Kazuma Ban
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Yasushi Yoshida
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Takashi Mino
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Yoshio Kasashima
- Education Center, Faculty of Creative Engineering, Chiba Institute of Technology Shibazono, Narashino, Chiba, 275-0023, Japan
| | - Masami Sakamoto
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
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318
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Shang Q, Tang H, Liu Y, Yin M, Su L, Xie S, Liu L, Yang W, Chen Y, Dong J, Zhou Y, Yin SF. Cu(i) catalysis for selective condensation/bicycloaromatization of two different arylalkynes: direct and general construction of functionalized C-N axial biaryl compounds. Chem Sci 2021; 13:263-273. [PMID: 35059176 PMCID: PMC8694356 DOI: 10.1039/d1sc03865f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 12/03/2021] [Indexed: 12/27/2022] Open
Abstract
Selective condensation/bicycloaromatization of two different arylalkynes is firstly developed under ligand-free copper(i)-catalysis, which allows the direct synthesis of C-N axial biaryl compounds in high yields with excellent selectivity and functional group tolerance. Due to the critical effects of Cu(i) catalyst and HFIP, many easily occurring undesired reactions are suppressed, and the coupled five-six aromatic rings are constructed via the selective formation of two C(sp2)-N(sp2) bonds and four C(sp2)-C(sp2) bonds. The achievement of moderate enantioselectivity verifies its potential for the simplest asymmetric synthesis of atropoisomeric biaryls. Western blotting demonstrated that the newly developed compounds are promising targets in biology and pharmaceuticals. This unique reaction can construct structurally diverse C-N axial biaryl compounds that have never been reported by other methods, and might be extended to various applications in materials, chemistry, biology, and pharmaceuticals.
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Affiliation(s)
- Qian Shang
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Haifang Tang
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Yongping Liu
- School of Medicine, Hunan University of Chinese Medicine Changsha 410208 China
| | - MingMing Yin
- School of Medicine, Hunan University of Chinese Medicine Changsha 410208 China
| | - Lebin Su
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Shimin Xie
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Lixin Liu
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Wen Yang
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Yi Chen
- School of Medicine, Hunan University of Chinese Medicine Changsha 410208 China
| | - Jianyu Dong
- Department of Educational Science, Hunan First Normal University Changsha 410205 China
| | - Yongbo Zhou
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Shuang-Feng Yin
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
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319
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Lin W, Zhao Q, Li Y, Pan M, Yang C, Yang GH, Li X. Asymmetric synthesis of N-N axially chiral compounds via organocatalytic atroposelective N-acylation. Chem Sci 2021; 13:141-148. [PMID: 35059162 PMCID: PMC8694391 DOI: 10.1039/d1sc05360d] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/10/2021] [Indexed: 12/20/2022] Open
Abstract
Compared with the well-developed C-C and C-N axial chirality, the asymmetric synthesis of N-N axial chirality remains elusive and challenging. Herein we report the first atroposelective N-acylation reaction of quinazolinone type benzamides with cinnamic anhydrides for the direct catalytic synthesis of optically active atropisomeric quinazolinone derivatives. This reaction features mild conditions and a broad substrate scope and produces N-N axially chiral compounds with high yields and very good enantioselectivities. Besides, the synthetic utility of the protocol was proved by a large scale reaction, transformation of the product and the utilization of the product as an acylation kinetic resolution reagent. Moreover, DFT calculations provide convincing evidence for the interpretation of stereoselection.
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Affiliation(s)
- Wei Lin
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Qun Zhao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Yao Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Ming Pan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Chen Yang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Guo-Hui Yang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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320
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Pan M, Shao YB, Zhao Q, Li X. Asymmetric Synthesis of N-N Axially Chiral Compounds by Phase-Transfer-Catalyzed Alkylations. Org Lett 2021; 24:374-378. [PMID: 34928616 DOI: 10.1021/acs.orglett.1c04028] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
N-N axially chiral skeletons are significant structural motifs in natural products, pharmaceuticals, and functional materials. Herein we disclose a method for the asymmetric synthesis of N-N axially chiral compounds by phase-transfer catalysis. A wide range of N-N axially chiral quinazolinone derivatives were prepared in high yields with excellent stereoselectivities. Furthermore, the synthetic utility of the protocol was proved by large-scale reaction and transformation of the product. Density functional theory calculations provide insight into the mechanism.
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Affiliation(s)
- Ming Pan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Ying-Bo Shao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Qun Zhao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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321
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Yang B, Yang J, Zhang J. Synthesis of Axially Chiral Anilides Enabled by a Palladium/
Ming‐Phos‐Catalyzed
Desymmetric Sonogashira Reaction. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- 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
| | - Junliang Zhang
- Department of Chemistry, Fudan University 2005 Songhu Road Shanghai 200438 China
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322
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Song R, Xie Y, Jin Z, Chi YR. Carbene‐Catalyzed Asymmetric Construction of Atropisomers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108630] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Runjiang Song
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Yongtao Xie
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Zhichao Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Guiyang 550025 China
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323
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Yang S, Hong B, Feng J, Gu Z. Construction of 2-Amino-2'-ketonyl Biaryls via Acid-Mediated Ring Opening of 9 H-Fluoren-9-ols with Organic Azides. Org Lett 2021; 23:9179-9183. [PMID: 34779635 DOI: 10.1021/acs.orglett.1c03484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A direct cross-coupling between 9H-fluoren-9-ols and organic azides for the synthesis of steric hindered 2-amino-2'-ketonyl biaryls was reported. The reaction featured an acid-mediated azidation/ring-expansion/hydrolysis cascade, which formally realized the C-N bond coupling reaction via cleavage of a C-C single bond. This method was applicable to chiral helical structure to give bulky axially chiral biaryls with full stereospecificity.
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Affiliation(s)
- Shan Yang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Biqiong Hong
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian 350108, P. R. China
| | - Jia Feng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhenhua Gu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.,College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian 350108, P. R. China
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324
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Liang H, Zhu G, Pu X, Qiu L. Copper-Catalyzed Enantioselective C-H Arylation between 2-Arylindoles and Hypervalent Iodine Reagents. Org Lett 2021; 23:9246-9250. [PMID: 34806895 DOI: 10.1021/acs.orglett.1c03596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The copper-catalyzed enantioselective C-H arylation between 2-arylindoles and hypervalent iodine reagents has been successfully developed, which provides a convenient and economical route to the highly atroposelective synthesis of axially chiral indole derivatives with a 2-aryl structure (up to 99% ee). Density functional theory calculations and wave function analysis show that the key "sandwich" intermediate leads to high enantioselectivity of the reaction.
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Affiliation(s)
- Hao Liang
- School of Chemistry, Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, Sun Yat-Sen University, Guangzhou 510006, China
| | - Guoxun Zhu
- Electronic/IT-related Chemicals Lab, Guangdong Institute of Analysis, Guangzhou 510070, China
| | - Xiaoyun Pu
- School of Chemistry, Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, Sun Yat-Sen University, Guangzhou 510006, China
| | - Liqin Qiu
- School of Chemistry, Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, Sun Yat-Sen University, Guangzhou 510006, China
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325
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Rodríguez-Salamanca P, Martín-de la Calle R, Rodríguez V, Merino P, Fernández R, Lassaletta JM, Hornillos V. Asymmetric synthesis of dibenzo[ b, d]azepines by Cu-catalyzed reductive or borylative cyclization. Chem Sci 2021; 12:15291-15297. [PMID: 34976349 PMCID: PMC8635211 DOI: 10.1039/d1sc04980a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 11/08/2021] [Indexed: 11/21/2022] Open
Abstract
A copper-catalyzed asymmetric intramolecular reductive cyclization for the synthesis of dibenzo[b,d]azepines is described. Use of 2'-vinyl-biaryl-2-imines as substrates and in situ formed [CuI/(Ph-BPE)] as the catalyst enables the synthesis of 7-membered bridged biarylamines containing both central and axial stereogenic elements in high yields (up to 98%) and with excellent diastereo- and enantioselectivities (>20 : 1 d.r., up to 99% ee). Moreover, the same catalyst was found to facilitate a related borylative cyclization to afford versatile boronic ester derivatives. Both reactions proceed under mild conditions (rt) and are applicable to a variety of substituted aromatic and heterocyclic derivatives.
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Affiliation(s)
| | | | - Verónica Rodríguez
- Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
| | - Pedro Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza 50009 Zaragoza Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
| | - José M Lassaletta
- Instituto Investigaciones Químicas (CSIC-US) C/Américo Vespucio, 49 41092 Sevilla Spain
| | - Valentín Hornillos
- Instituto Investigaciones Químicas (CSIC-US) C/Américo Vespucio, 49 41092 Sevilla Spain .,Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
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326
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Construction of C−C Axial Chirality via Asymmetric Carbene Insertion into Arene C−H Bonds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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327
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Li Z, Chen Y, Wang C, Xu G, Shao Y, Zhang X, Tang S, Sun J. Construction of C-C Axial Chirality via Asymmetric Carbene Insertion into Arene C-H Bonds. Angew Chem Int Ed Engl 2021; 60:25714-25718. [PMID: 34597448 DOI: 10.1002/anie.202110430] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/29/2021] [Indexed: 01/16/2023]
Abstract
By using diazonaphthoquinones and anilines as key reagents and through a point-to-axis chiral transfer strategy, the atroposelective synthesis via asymmetric C(sp2 )-H bond insertion reaction of arenes has been realized under rhodium catalysis, providing the resulting biaryl atropisomers in moderate to excellent yields with good enantiomeric ratios (up to 99:1). Further elaboration indicates this type of axially biaryl scaffold may have promising potentials in developing novel chiral ligands.
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Affiliation(s)
- Ziyong Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Ying Chen
- Shenzhen Bay Laboratory, State Key Laboratory of Chemical Oncogeomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Chuang Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Guangyang Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Xinhao Zhang
- Shenzhen Bay Laboratory, State Key Laboratory of Chemical Oncogeomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, 213164, Changzhou, China
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328
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Liu SJ, Chen ZH, Chen JY, Ni SF, Zhang YC, Shi F. Rational Design of Axially Chiral Styrene-Based Organocatalysts and Their Application in Catalytic Asymmetric (2+4) Cyclizations. Angew Chem Int Ed Engl 2021; 61:e202112226. [PMID: 34846087 DOI: 10.1002/anie.202112226] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Indexed: 12/13/2022]
Abstract
A new class of axially chiral styrene-based thiourea tertiary amine catalysts, which have unique characteristics such as an efficient synthetic route, multiple chiral elements, and multiple activating groups, has been rationally designed. These new chiral catalysts have proven to be efficient organocatalysts, enabling the chemo-, diastereo-, and enantioselective (2+4) cyclization of 2-benzothiazolimines with homophthalic anhydrides in good yields (up to 96 %) with excellent stereoselectivities (all >95:5 dr, up to 98 % ee). More importantly, theoretical calculations elucidated the important role of an axially chiral styrene moiety in controlling both the reactivity and enantioselectivity. This work not only represents the first design of styrene-based chiral thiourea tertiary amine catalysts and the first catalytic asymmetric (2+4) cyclization of 2-benzothiazolimines, but also gives an in-depth understanding of axially chiral styrene-based organocatalysts.
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Affiliation(s)
- Si-Jia Liu
- School of Chemistry and Materials Science, Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China
| | - Zhi-Han Chen
- School of Chemistry and Materials Science, Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China
| | - Jia-Yi Chen
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, 515063, China
| | - Shao-Fei Ni
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, 515063, China
| | - Yu-Chen Zhang
- School of Chemistry and Materials Science, Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China
| | - Feng Shi
- School of Chemistry and Materials Science, Key Laboratory of Green Synthetic Chemistry for Functional Materials of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, China
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329
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Xu WL, Zhao WM, Zhang RX, Chen J, Zhou L. Organocatalytic cycloaddition-elimination cascade for atroposelective construction of heterobiaryls. Chem Sci 2021; 12:14920-14926. [PMID: 34820108 PMCID: PMC8597853 DOI: 10.1039/d1sc05161j] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/28/2021] [Indexed: 12/19/2022] Open
Abstract
The first chiral phosphoric acid (CPA) catalyzed cycloaddition–elimination cascade reaction of 2-naphthol- and phenol-derived enecarbamates with azonaphthalenes has been established, providing a highly atroposelective route to an array of axially chiral aryl-C3-benzoindoles in excellent yields with excellent enantioselectivities. The success of this strategy derives from the stepwise process involving CPA-catalyzed asymmetric formal [3 + 2] cycloaddition and subsequent central-to-axial chirality conversion by elimination of a carbamate. In addition, the practicality of this reaction had been verified by varieties of transformations towards functionalized atropisomers. An organocatalytic asymmetric cycloaddition–elimination cascade reaction of aryl enecarbamates with azonaphthalenes has been developed to access axially chiral heterobiaryls in excellent yields and enantioselectivities.![]()
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Affiliation(s)
- Wen-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Wei-Ming Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Ru-Xia Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University Xi'an 710102 P. R. China
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330
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An QJ, Xia W, Ding WY, Liu HH, Xiang SH, Wang YB, Zhong G, Tan B. Nitrosobenzene-Enabled Chiral Phosphoric Acid Catalyzed Enantioselective Construction of Atropisomeric N-Arylbenzimidazoles. Angew Chem Int Ed Engl 2021; 60:24888-24893. [PMID: 34553823 DOI: 10.1002/anie.202111251] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/22/2021] [Indexed: 12/18/2022]
Abstract
Described herein is an imidazole ring formation strategy for the synthesis of axially chiral N-arylbenzimidazoles by means of chiral phosphoric acid catalysis. Two sets of conditions were developed to transform two classes of 2-naphthylamine derivatives into structurally diverse N-arylbenzimidazole atropisomers with excellent chemo- and regioselectivity as well as high levels of enantiocontrol. It is worth reflecting on the unique roles played by the nitroso group in this domino reaction. It functions as a linchpin by first offering an electrophilic site (N) for the initial C-N bond formation while the resulting amine performs the nucleophilic addition to form the second C-N bond. Additionally, it could facilitate the final oxidative aromatization as an oxidant. The atropisomeric products could be conveniently elaborated to a series of axially chiral derivatives, enabling the exploitation of N-arylbenzimidazoles for their potential utilities in asymmetric catalysis.
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Affiliation(s)
- Qian-Jin An
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wang Xia
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wei-Yi Ding
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Huan-Huan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Shao-Hua Xiang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yong-Bin Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
| | - Bin Tan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
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331
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Zhang X, Wang J, Yang SD. Enantioselective Cobalt-Catalyzed Reductive Cross-Coupling for the Synthesis of Axially Chiral Phosphine–Olefin Ligands. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04128] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xi Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Juan Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
| | - Shang-Dong Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, People’s Republic of China
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332
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Dhawa U, Wdowik T, Hou X, Yuan B, Oliveira JCA, Ackermann L. Enantioselective palladaelectro-catalyzed C-H olefinations and allylations for N-C axial chirality. Chem Sci 2021; 12:14182-14188. [PMID: 34760203 PMCID: PMC8565398 DOI: 10.1039/d1sc04687j] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 10/04/2021] [Indexed: 01/25/2023] Open
Abstract
Enantioselective palladaelectro-catalyzed C–H alkenylations and allylations were achieved with easily-accessible amino acids as transient directing groups. This strategy provided access to highly enantiomerically-enriched N–C axially chiral scaffolds under exceedingly mild conditions. The synthetic utility of our strategy was demonstrated by a variety of alkenes, while the versatility of our approach was reflected by atroposelective C–H allylations. Computational studies provided insights into a facile C–H activation by a seven-membered palladacycle. Enantioselective palladaelectro-catalyzed C–H alkenylations and allylations were achieved by the means of an easily-accessible amino acid for the synthesis of N–C axially chiral indole biaryls.![]()
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Affiliation(s)
- Uttam Dhawa
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
| | - Tomasz Wdowik
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
| | - Xiaoyan Hou
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
| | - Binbin Yuan
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
| | - João C A Oliveira
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany .,Wöhler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Germany
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333
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334
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Stroia I, Moraru IT, Miclăuş M, Grosu I, Lar C, Grosu IG, Terec A. Solid-State and Theoretical Investigations of Some Banister-Type Macrocycles with 2,2'-Aldoxime-1,1'-Biphenyl Units. Front Chem 2021; 9:750418. [PMID: 34692645 PMCID: PMC8527037 DOI: 10.3389/fchem.2021.750418] [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: 07/30/2021] [Accepted: 09/20/2021] [Indexed: 11/17/2022] Open
Abstract
In the context of helical chirality, bridging of biphenyl units leads to banister-type compounds and the stability of the resulted atropisomers may increase dramatically if suitable changes are performed in the linker unit that coils around the biphenyl moiety. A rigorous density functional theory (DFT) study was conducted for macrocycles containing rigid oxime ether segments connected to the biphenyl backbone in order to determine how the rotation barriers are influenced by the presence of either a flexible oligoethyleneoxide or a more rigid m–xylylene component in the macrocycle. The calculated values for the racemization barrier were in good agreement with those obtained experimentally and confirm the benefit of introducing a more rigid unit in the macrocycle on the stability of atropisomers. Solid-state data were obtained and computed data were used to assess the contribution brought by supramolecular associations observed in the lattice to the stabilization of the crystal structure. Beside introducing rigidity in the linker, complexation of flexible macrocycles with alkali metal ions is also contributing to the stability of atropisomers, leading to values for the racemization barrier matching that of the rigid macrocycle. Using diethylammonium cation as guest for the macrocycle, a spectacular increase in the barrier to rotation was observed for the resulted pseudo[2]rotaxane.
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Affiliation(s)
- Ioan Stroia
- Department of Chemistry and SOOMCC, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Ionuţ-Tudor Moraru
- Faculty of Chemistry and Chemical Engineering, Metalomica Research Centre, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Maria Miclăuş
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Ion Grosu
- Department of Chemistry and SOOMCC, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Claudia Lar
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Ioana Georgeta Grosu
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Anamaria Terec
- Department of Chemistry and SOOMCC, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania
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335
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Mi R, Chen H, Zhou X, Li N, Ji D, Wang F, Lan Y, Li X. Rhodium-Catalyzed Atroposelective Access to Axially Chiral Olefins via C-H Bond Activation and Directing Group Migration. Angew Chem Int Ed Engl 2021; 61:e202111860. [PMID: 34677892 DOI: 10.1002/anie.202111860] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Indexed: 01/12/2023]
Abstract
Axially chiral open-chain olefins represent an underexplored class of chiral platform. In this report, two classes of tetrasubstituted axially chiral acyclic olefins have been accessed in excellent enantioselectivity and regioselectivity via C-H activation of (hetero)arenes assisted by a migratable directing group en route to coupling with sterically hindered alkynes. The coupling of indoles bearing an N-aminocarbonyl directing group afforded C-N axially chiral acrylamides with the assistance of a racemic zinc carboxylate additive. DFT studies suggest a β-nitrogen elimination-reinsertion pathway for the directing group migration. Meanwhile, the employment of N-phenoxycarboxamide delivered C-C axially chiral enamides via migration of the oxidizing directing group. Experiments suggest that in both cases the (hetero)arene substrate adopts a well-defined orientation during the C-H activation, which in turn determines the disposition of the alkyne in migratory insertion. Synthetic applications of representative chiral olefins are demonstrated.
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Affiliation(s)
- Ruijie Mi
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Haohua Chen
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, China
| | - Xukai Zhou
- Department of Chemistry, The University of Chicago, Chicago, IL, 60637, USA
| | - Nan Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Danqing Ji
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Fen Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), 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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336
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Shaaban S, Merten C, Waldmann H. Catalytic Atroposelective C7 Functionalisation of Indolines and Indoles. Chemistry 2021; 28:e202103365. [PMID: 34676929 PMCID: PMC9298066 DOI: 10.1002/chem.202103365] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Indexed: 12/15/2022]
Abstract
Axially chiral atropisomeric compounds are widely applied in asymmetric catalysis and medicinal chemistry. In particular, axially chiral indole‐ and indoline‐based frameworks have been recognised as important heterobiaryl classes because they are the core units of bioactive natural alkaloids, chiral ligands and bioactive compounds. Among them, the synthesis of C7‐substituted indole biaryls and the analogous indoline derivatives is particularly challenging, and methods for their efficient synthesis are in high demand. Transition‐metal catalysis is considered one of the most efficient methods to construct atropisomers. Here, we report the enantioselective synthesis of C7‐indolino‐ and C7‐indolo biaryl atropisomers by means of C−H functionalisation catalysed by chiral RhJasCp complexes.
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Affiliation(s)
- Saad Shaaban
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
| | - Christian Merten
- Ruhr University Bochum, Department of Organic Chemistry, Universität Straße 150, 44801, Bochum, Germany
| | - Herbert Waldmann
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Straße 11, 44227, Dortmund, Germany.,Technical University Dortmund, Faculty of Chemical Biology, Otto-Hahn-Straße 4a, 44227, Dortmund, Germany
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337
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An Q, Xia W, Ding W, Liu H, Xiang S, Wang Y, Zhong G, Tan B. Nitrosobenzene‐Enabled Chiral Phosphoric Acid Catalyzed Enantioselective Construction of Atropisomeric
N
‐Arylbenzimidazoles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111251] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Qian‐Jin An
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Wang Xia
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Wei‐Yi Ding
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Huan‐Huan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Shao‐Hua Xiang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Yong‐Bin Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 China
| | - Bin Tan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
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338
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Jiang H, Geng R, Wei J, Gong L. Atroposelective sp
3
C—H Coupling for Kinetic Resolution of Thioanilide Atropisomers. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100466] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Hua‐Jie Jiang
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry University of Science and Technology of China Hefei Anhui 230026 China
| | - Rui‐Long Geng
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry University of Science and Technology of China Hefei Anhui 230026 China
| | - Jia‐Hui Wei
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry University of Science and Technology of China Hefei Anhui 230026 China
| | - Liu‐Zhu Gong
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry University of Science and Technology of China Hefei Anhui 230026 China
- Center for Excellence in Molecular Synthesis of CAS Hefei Anhui 230026 China
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339
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Mei GJ, Wong JJ, Zheng W, Nangia AA, Houk K, Lu Y. Rational design and atroposelective synthesis of N–N axially chiral compounds. Chem 2021. [DOI: 10.1016/j.chempr.2021.07.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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340
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Cardenas MM, Saputra MA, Gordon DA, Sanchez AN, Yamamoto N, Gustafson JL. Catalytic atroposelective dynamic kinetic resolutions and kinetic resolutions towards 3-arylquinolines via S NAr. Chem Commun (Camb) 2021; 57:10087-10090. [PMID: 34515276 PMCID: PMC9799074 DOI: 10.1039/d1cc04335h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Herein we report the catalytic atroposelective syntheses of pharmaceutically relevant 3-arylquinolines via the nucleophilic aromatic substitution (SNAr) of thiophenols into 3-aryl-2-fluoroquinolines mediated by catalytic amounts of Cinchona alkaloid-derived ureas. These reactions displayed a spectrum of dynamic kinetic resolution (DKR) and kinetic resolution (KR) characters depending upon the stereochemical stability of the starting material. Low barrier substrates proceeded via DKR while higher barrier substrates proceeded via KR. On the other hand, substrates with intermediate stabilities displayed hallmarks of both DKR and KR. Finally, we also show that we can functionalize the atropisomerically enriched quinolines into pharmaceutically privileged scaffolds with minimal observed racemization.
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Affiliation(s)
- Mariel M Cardenas
- College of Sciences, Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California, 92182-1030, USA.
| | - Mirza A Saputra
- College of Sciences, Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California, 92182-1030, USA.
| | - Deane A Gordon
- College of Sciences, Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California, 92182-1030, USA.
| | - Andrea N Sanchez
- College of Sciences, Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California, 92182-1030, USA.
| | - Nobuyuki Yamamoto
- College of Sciences, Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California, 92182-1030, USA.
| | - Jeffrey L Gustafson
- College of Sciences, Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California, 92182-1030, USA.
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341
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Wang J, Zhao C, Wang J. Recent Progress toward the Construction of Axially Chiral Molecules Catalyzed by an N-heterocyclic Carbene. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03459] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jiaming Wang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beiing 100875, People’s Republic of China
| | - Changgui Zhao
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beiing 100875, People’s Republic of China
| | - Jian Wang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, People’s Republic of China
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342
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Zhang P, Wang XM, Xu Q, Guo CQ, Wang P, Lu CJ, Liu RR. Enantioselective Synthesis of Atropisomeric Biaryls by Pd-Catalyzed Asymmetric Buchwald-Hartwig Amination. Angew Chem Int Ed Engl 2021; 60:21718-21722. [PMID: 34374189 DOI: 10.1002/anie.202108747] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/02/2021] [Indexed: 12/15/2022]
Abstract
N-C Biaryl atropisomers are prevalent in natural products and bioactive drug molecules. However, the enantioselective synthesis of such molecules has not developed significantly. Particularly, the enantioselective synthesis of N-C biaryl atropisomers by stereoselective metal-catalyzed aryl amination remains unprecedented. Herein, a Pd-catalyzed cross-coupling strategy is presented for the synthesis of N-C axially chiral biaryl molecules. A broad spectrum of N-C axially chiral compounds was obtained with excellent enantioselectivities (up to 99 % ee) and good yields (up to 98 %). The practicality of this reaction was validated in the synthesis of useful biological molecules.
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Affiliation(s)
- Peng Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Xiao-Mei Wang
- 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
| | - Chang-Qiu Guo
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Peng Wang
- 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
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
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343
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Wang XM, Zhang P, Xu Q, Guo CQ, Zhang DB, Lu CJ, Liu RR. Enantioselective Synthesis of Nitrogen-Nitrogen Biaryl Atropisomers via Copper-Catalyzed Friedel-Crafts Alkylation Reaction. J Am Chem Soc 2021; 143:15005-15010. [PMID: 34496212 DOI: 10.1021/jacs.1c07741] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nitrogen-nitrogen bonds containing motifs are ubiquitous in natural products and bioactive compounds. However, the atropisomerism arising from a restricted rotation around an N-N bond is largely overlooked. Here, we describe a method to access the first enantioselective synthesis of N-N biaryl atropisomers via a Cu-bisoxazoline-catalyzed Friedel-Crafts alkylation reaction. A wide range of axially chiral N-N bisazaheterocycle compounds were efficiently prepared in high yields with excellent enantioselectivities via desymmetrization and kinetic resolution. Heating experiments showed that the axially chiral bisazaheterocycle products have high rotational barriers.
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Affiliation(s)
- Xiao-Mei Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China
| | - Peng Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China
| | - Qi Xu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China
| | - Chang-Qiu Guo
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China
| | - De-Bing Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China
| | - Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China
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344
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Pan C, Yin SY, Gu Q, You SL. Cp xM(iii)-catalyzed enantioselective C-H functionalization through migratory insertion of metal-carbenes/nitrenes. Org Biomol Chem 2021; 19:7264-7275. [PMID: 34612356 DOI: 10.1039/d1ob01248g] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
CpxM(iii)-catalyzed enantioselective C-H functionalization reactions have progressed rapidly using either chiral cyclopentadienyl ligands or appropriate chiral carboxylic acids. In this context, highly reactive carbene and nitrene precursors can serve as effective C-H coupling partners, providing a straightforward and efficient approach to access chiral molecules. In this review, we highlight the developments in CpxM(iii)-catalyzed enantioselective C-H functionalization reactions through migratory insertion of metal-carbenes/nitrenes by employing chiral CpxM(iii) complexes or achiral CpxM(iii) complexes combined with chiral carboxylic acids.
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Affiliation(s)
- Chongqing Pan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
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345
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Liu CX, Zhang WW, Yin SY, Gu Q, You SL. Synthesis of Atropisomers by Transition-Metal-Catalyzed Asymmetric C-H Functionalization Reactions. J Am Chem Soc 2021; 143:14025-14040. [PMID: 34432467 DOI: 10.1021/jacs.1c07635] [Citation(s) in RCA: 135] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Transition-metal-catalyzed enantioselective C-H functionalization has become a powerful strategy for the formation of C-C or C-X bonds, enabling the highly asymmetric synthesis of a wide range of enantioenriched compounds. Atropisomers are widely found in natural products and pharmaceutically relevant molecules, and have also found applications as privileged frameworks for chiral ligands and catalysts. Thus, research into asymmetric routes for the synthesis of atropisomers has garnered great interest in recent years. In this regard, transition-metal-catalyzed enantioselective C-H functionalization has emerged as an atom-economic and efficient strategy toward their synthesis. In this Perspective, the approaches for the synthesis of atropisomers by transition-metal-catalyzed asymmetric C-H functionalization reactions are summarized. The main focus here is on asymmetric catalysis via Pd, Rh, and Ir complexes, which have been the most frequently utilized catalysts among reported enantioselective C-H functionalization reactions. Finally, we discuss limitations on available protocols and give an outlook on possible future avenues of research.
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Affiliation(s)
- Chen-Xu Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Wen-Wen Zhang
- Chang-Kung Chuang Institute, East China Normal University, Shanghai 200062, China
| | - Si-Yong Yin
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China.,Chang-Kung Chuang Institute, East China Normal University, Shanghai 200062, China
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346
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Zhang P, Wang X, Xu Q, Guo C, Wang P, Lu C, Liu R. Enantioselective Synthesis of Atropisomeric Biaryls by Pd‐Catalyzed Asymmetric Buchwald–Hartwig Amination. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108747] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Peng Zhang
- College of Chemistry and Chemical Engineering Qingdao University Ningxia Road 308# Qingdao 266071 China
| | - Xiao‐Mei Wang
- 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
| | - Chang‐Qiu Guo
- College of Chemistry and Chemical Engineering Qingdao University Ningxia Road 308# Qingdao 266071 China
| | - Peng Wang
- 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
| | - Ren‐Rong Liu
- College of Chemistry and Chemical Engineering Qingdao University Ningxia Road 308# Qingdao 266071 China
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347
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Woźniak Ł, Cramer N. Atropo-Enantioselective Oxidation-Enabled Iridium(III)-Catalyzed C-H Arylations with Aryl Boronic Esters. Angew Chem Int Ed Engl 2021; 60:18532-18536. [PMID: 34153163 PMCID: PMC8457206 DOI: 10.1002/anie.202106403] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/16/2021] [Indexed: 12/18/2022]
Abstract
Atropo-enantioselective biaryl coupling through C-H bond functionalization is an emerging technology allowing direct construction of axially chiral molecules. This approach is largely limited to electrophilic coupling partners. We report a highly atropo-enantioselective C-H arylation of tetralone derivatives paired with aryl boronic esters as nucleophilic components. The transformation is catalyzed by chiral cyclopentadienyl (Cpx ) iridium(III) complexes and enabled by oxidatively enhanced reductive elimination from high-valent cyclometalated Ir-species.
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Affiliation(s)
- Łukasz Woźniak
- Institute of Chemical Sciences and Engineering (ISIC)EPFL SB ISIC LCSABCH 43051015LausanneSwitzerland
| | - Nicolai Cramer
- Institute of Chemical Sciences and Engineering (ISIC)EPFL SB ISIC LCSABCH 43051015LausanneSwitzerland
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348
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Yang J, Zhang JW, Bao W, Qiu SQ, Li S, Xiang SH, Song J, Zhang J, Tan B. Chiral Phosphoric Acid-Catalyzed Remote Control of Axial Chirality at Boron-Carbon Bond. J Am Chem Soc 2021; 143:12924-12929. [PMID: 34384026 DOI: 10.1021/jacs.1c05079] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The previously elusive catalytic enantioselective construction of axially chiral B-aryl-1,2-azaborines with a C-B stereogenic axis has been realized through a chiral phosphoric acid-catalyzed desymmetrization strategy reported herein. The electrophilic aromatic substitution reaction of 3,5-disubsituted phenols with diazodicarboxamides could afford these axially chiral structures in good efficiency with excellent enantiocontrol. The efficient long-range stereochemical control is achieved by multiple well-defined H-bonding interactions between chiral phosphoric acid and both substrates. Meanwhile, the reaction duration could be markedly shortened with weakly acidic N-H in 1,2-azaborine acting as H-bond donor. The scalability of the reaction and facile cleavage of the N-N bond in the product further demonstrated the practicality of this method.
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Affiliation(s)
- Junxian Yang
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.,Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ji-Wei Zhang
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wen Bao
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Sheng-Qi Qiu
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.,Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shaoyu Li
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shao-Hua Xiang
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun Song
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Junmin Zhang
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Bin Tan
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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349
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Jin L, Zhang P, Li Y, Yu X, Shi BF. Atroposelective Synthesis of Conjugated Diene-Based Axially Chiral Styrenes via Pd(II)-Catalyzed Thioether-Directed Alkenyl C-H Olefination. J Am Chem Soc 2021; 143:12335-12344. [PMID: 34340309 DOI: 10.1021/jacs.1c06236] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The efficient stereoselective synthesis of conjugated dienes, especially those with axial chirality, remains a great challenge. Herein, we report the highly atroposelective synthesis of axially chiral styrenes with a conjugated 1,3-diene scaffold via a Pd(II)-catalyzed thioether-directed alkenyl C-H olefination strategy. This strategy features easy operation, mild reaction conditions, high functional group tolerance (69 examples), complete Z-selectivity, and excellent enantioselectivities (up to 99% ee). Notably, the highly enantioselective synthesis of atropisomers with two stereogenic axes were also achieved using this strategy (up to 99% ee and 97:3 dr). Moreover, the reaction could be scaled up, and the resulting axially chiral styrenes could be easily oxidized into chiral sulfoxide derivatives with high diastereoselectivities, which showed great promise as a new type of sulfur-olefin ligand.
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Affiliation(s)
- Liang Jin
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Peng Zhang
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Ya Li
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xin Yu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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350
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Li X, Zhao L, Qi Z, Li X. Construction of Atropisomeric 3-Arylindoles via Enantioselective Cacchi Reaction. Org Lett 2021; 23:5901-5905. [PMID: 34236878 DOI: 10.1021/acs.orglett.1c02012] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The de novo construction of axially chiral 3-arylindoles bearing a C(3)-C(aryl) chiral axis has been realized by Pd-catalyzed enantioselective Cacchi reaction between aryl bromides and o-alkynylanilines. The reaction proceeded under mild conditions in high yields and excellent enantioselectivities.
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Affiliation(s)
- Xiaojiao Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an 710062, China
| | - Liujie Zhao
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an 710062, China
| | - Zisong Qi
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an 710062, China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an 710062, China
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