1
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Wang ZY, Ma G, Xu Y, Wang Q, Zhang M, Ma X, Ma C, Sun A, Xia R, Liu H. One-pot synthesis of functionalized dihydropyridin-2-ones via carbene-catalyzed base-controlled [3+3] annulation reaction. Chem Commun (Camb) 2024; 60:11327-11330. [PMID: 39297768 DOI: 10.1039/d4cc03521f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2024]
Abstract
Herein, we have described a novel organocatalytic approach to access biologically important dihydropyridin-2-ones in a one-pot way with generally high yields (up to 99%) and excellent enantioselectivities (up to 99% ee). This reaction proceeded via a new dual activation mode, including in situ-generated α,β-unsaturated acylazoliums and 4-dimethylaminopyridinium salts that underwent a Michael addition/1,4-H migration/lactamization sequence. The base-triggered 4-dimethylaminopyridinium ylide formation pathway over the competing substitution reaction pathway of vicinal haloamines is noteworthy.
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Affiliation(s)
- Zhan-Yong Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453003, China.
| | - Guoyang Ma
- School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, China
| | - Yaoyao Xu
- School of Pharmacy, Xinxiang University, Xinxiang 453003, China.
| | - Qingqing Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453003, China.
| | - Mengru Zhang
- School of Pharmacy, Xinxiang University, Xinxiang 453003, China.
| | - Xueji Ma
- School of Pharmacy, Xinxiang University, Xinxiang 453003, China.
| | - Chenyang Ma
- Henan Run Catalysts Co., Ltd, Xinxiang 453003, China
| | - Aili Sun
- Puyang Institute of Technology, Henan University, Puyang 457000, China
| | - Ran Xia
- School of Pharmacy, Xinxiang University, Xinxiang 453003, China.
| | - Hongxin Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China.
- Institute of New Materials & Industrial Technology, Wenzhou University, Wenzhou 325035, China.
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2
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Tian JS, Yi-Gong, Wu ZW, Yu JS, Zhou J. H-Bond Donor-Directed Switch of Diastereoselectivity in the Enantioselective Intramolecular Aza-Henry Reaction of Ketimines. Chemistry 2024:e202402488. [PMID: 39120485 DOI: 10.1002/chem.202402488] [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: 06/30/2024] [Revised: 08/08/2024] [Accepted: 08/09/2024] [Indexed: 08/10/2024]
Abstract
We report an H-bond donor controlled diastereoselective switchable intramolecular aza-Henry reaction of ketimines derived from α-ketoesters and 2-(2-nitroethyl)anilines, allowing facile access to chiral tetrahydroquinolines bearing an aza-quaternary carbon stereocenter, which are privileged scaffold for medicinal researches. While newly developed cinchona alkaloid derived phosphoramide-bearing quaternary ammonium salt C2 selectively give cis-adducts in up to 20 : 1 dr and 99 % ee, the corresponding urea-bearing analogue C8 preferentially give trans-adducts in up to 20 : 1 dr and 99 % ee.
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Affiliation(s)
- Jun-Song Tian
- State Key Laboratory of Petroleum Molecular & Process Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N Zhongshan Road, Shanghai, 200062, China
| | - Yi-Gong
- State Key Laboratory of Petroleum Molecular & Process Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N Zhongshan Road, Shanghai, 200062, China
| | - Zhong-Wei Wu
- State Key Laboratory of Petroleum Molecular & Process Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N Zhongshan Road, Shanghai, 200062, China
| | - Jin-Sheng Yu
- State Key Laboratory of Petroleum Molecular & Process Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N Zhongshan Road, Shanghai, 200062, China
| | - Jian Zhou
- State Key Laboratory of Petroleum Molecular & Process Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N Zhongshan Road, Shanghai, 200062, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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3
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Wei XP, Wang XC, Ma T, Qiao XX, Li G, He Y, Zhao XJ. B(C 6F 5) 3/CPA-Catalyzed Aza-Diels-Alder Reaction of 3,3-Difluoro-2-Aryl-3H-indoles and Unactivated Dienes. Chemistry 2024; 30:e202401008. [PMID: 38624085 DOI: 10.1002/chem.202401008] [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: 03/12/2024] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/17/2024]
Abstract
Here we report B(C6F5)3/CPA-catalyzed enantioselective aza-Diels-Alder reaction of 3,3-difluoro-2-Aryl-3H-indoles with unactivated dienes to access chiral 10,10-difluoro-tetrahydropyrido[1,2-a]indoles. This protocol allows the formation of pyrazole-based C2-quaternary indolin-3-ones with high enantioselectivities and regioselectivities. Moreover, gram-scale synthesis of the 10,10-difluoro-tetrahydropyrido[1,2-a]indole skeleton was successfully achieved without any reduction in both yield and enantioselectivity.
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Affiliation(s)
- Xing-Pin Wei
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, Endophytes, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650500, China
| | - Xin-Chun Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, Endophytes, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650500, China
| | - Tao Ma
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, Endophytes, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650500, China
| | - Xiu-Xiu Qiao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, Endophytes, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650500, China
| | - Ganpeng Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, Endophytes, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650500, China
| | - Yonghui He
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, Endophytes, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650500, China
| | - Xiao-Jing Zhao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, Endophytes, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650500, China
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4
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Liu Z, Qian QC, Chen LM, Li X. B(C 6F 5) 3/Chiral Phosphoric Acid Catalyzed Asymmetric Aza-Diels-Alder Reaction of Imines and Unactivated Dienes. Org Lett 2024; 26:3247-3251. [PMID: 38557202 DOI: 10.1021/acs.orglett.4c00874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Herein, we report an asymmetric aza-Diels-Alder reaction of quinoxalinones or benzoxazinones with unactivated dienes by utilizing a B(C6F5)3/chiral phosphoric acid catalyst to construct chiral six-membered N-heterocycles. Various quinoxalinones or benzoxazinones with electron-withdrawing and electron-donating groups and unactivated dienes were tolerated (up to 99% yield and 99% ee) in the methodology with only 2 mol % catalyst loading. Moreover, the luminescence mechanism and photophysical properties of the product were tested and used for anticounterfeiting of QR codes.
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Affiliation(s)
- Zhen Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qing-Chun Qian
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Li-Ming Chen
- Research Center for Analytical Science, 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
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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5
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Manoharan A, Jayan J, Rangarajan TM, Bose K, Benny F, Ipe RS, Kumar S, Kukreti N, Abdelgawad MA, Ghoneim MM, Kim H, Mathew B. "Click Chemistry": An Emerging Tool for Developing a New Class of Structural Motifs against Various Neurodegenerative Disorders. ACS OMEGA 2023; 8:44437-44457. [PMID: 38046293 PMCID: PMC10688180 DOI: 10.1021/acsomega.3c04960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 12/05/2023]
Abstract
Click chemistry is a set of easy, atom-economical reactions that are often utilized to combine two desired chemical entities. Click chemistry accelerates lead identification and optimization, reduces the complexity of chemical synthesis, and delivers extremely high yields without undesirable byproducts. The most well-known click chemistry reaction is the 1,3-dipolar cycloaddition of azides and alkynes to form 1,2,3-triazoles. The resulting 1,2,3-triazoles can serve as both bioisosteres and linkers, leading to an increase in their use in the field of drug discovery. The current Review focuses on the use of click chemistry to identify new molecules for treating neurodegenerative diseases and in other areas such as peptide targeting and the quantification of biomolecules.
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Affiliation(s)
- Amritha Manoharan
- Department
of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa
Vidyapeetham, AIMS Health Sciences Campus, Kochi 682 041, India
| | - Jayalakshmi Jayan
- Department
of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa
Vidyapeetham, AIMS Health Sciences Campus, Kochi 682 041, India
| | - T. M. Rangarajan
- Department
of Chemistry, Sri Venkateswara College, University of Delhi, New Delhi 110021, India
| | - Kuntal Bose
- Department
of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa
Vidyapeetham, AIMS Health Sciences Campus, Kochi 682 041, India
| | - Feba Benny
- Department
of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa
Vidyapeetham, AIMS Health Sciences Campus, Kochi 682 041, India
| | - Reshma Susan Ipe
- Department
of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa
Vidyapeetham, AIMS Health Sciences Campus, Kochi 682 041, India
| | - Sunil Kumar
- Department
of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa
Vidyapeetham, AIMS Health Sciences Campus, Kochi 682 041, India
| | - Neelima Kukreti
- School
of Pharmacy, Graphic Era Hill University, Dehradun, Uttarakhand 248007, India
| | - Mohamed A. Abdelgawad
- Department
of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
- Department
of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Mohammed M. Ghoneim
- Department
of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Ad Diriyah 13713, Saudi Arabia
| | - Hoon Kim
- Department
of Pharmacy, and Research Institute of Life Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Bijo Mathew
- Department
of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa
Vidyapeetham, AIMS Health Sciences Campus, Kochi 682 041, India
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6
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Sonawane HR, Vibhute BT, Aghav BD, Deore JV, Patil SK. Versatile applications of transition metal incorporating quinoline Schiff base metal complexes: An overview. Eur J Med Chem 2023; 258:115549. [PMID: 37321110 DOI: 10.1016/j.ejmech.2023.115549] [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: 04/18/2023] [Revised: 06/03/2023] [Accepted: 06/06/2023] [Indexed: 06/17/2023]
Abstract
Since the last decade, research on quinoline Schiff base metal complexes has risen substantially due to their versatile applications across many significant fields. Schiff bases are also known as azomethines, aldimines, and imines. Quinoline Schiff base-derived metal complexes are intriguing to study topics. These complexes are employed in biological, analytical, and catalytic fields. Researchers have found that Schiff bases are more biologically active when coordinated with metal ions. Research in the biological sciences has shown that heterocyclic compounds like quinoline and its derivatives are important. Because of their broad spectrum of activity, quinoline derivatives have been discovered to be effective therapeutic agents for various disorders. Even though various classical synthetic pathways mentioned in the literature are still in use, there is an urgent need for a new, more effective method that is safer for the environment, has a higher yield, generates less hazardous waste, and is easier to use. This highlights the critical need for a safe, eco-friendly approach to quinoline scaffold synthesis. This review focuses exclusively on Schiff base metal complexes derived from quinoline, fabricated and studied in the past ten years, and having anticancer, antibacterial, antifungal, antioxidant, antidiabetic, antiproliferative, DNA-intercalation, and cytotoxic activities.
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Affiliation(s)
- Harshad R Sonawane
- Department of Chemistry, Changu Kana Thakur A.C.S. College, New panvel(Autonomous), New Panvel, 410206, University of Mumbai, Maharashtra, India; Department of Chemistry, G. M. Vedak College of Science, Tala-Raigad, 402111, Maharashtra, India.
| | - Baliram T Vibhute
- Department of Chemistry Doshi Vakil Arts and G.C.U.B. Science and Commerce College, Goregaon, Raigad, 402103, Maharashtra, India
| | - Balasaheb D Aghav
- Department of Chemistry, Changu Kana Thakur A.C.S. College, New panvel(Autonomous), New Panvel, 410206, University of Mumbai, Maharashtra, India
| | - Jaydeep V Deore
- Department of Chemistry, G. M. Vedak College of Science, Tala-Raigad, 402111, Maharashtra, India
| | - Sanjay K Patil
- Department of Chemistry, Changu Kana Thakur A.C.S. College, New panvel(Autonomous), New Panvel, 410206, University of Mumbai, Maharashtra, India.
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7
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Qiu S, Zhang X, Hu C, Chu H, Li Q, Ruiz DA, Liu LL, Tung C, Kong L. Unveiling Hetero‐Enyne Reactivity of Aryliminoboranes: Dearomative Hetero‐Diels–Alder‐Like Reactions. Angew Chem Int Ed Engl 2022; 61:e202205814. [DOI: 10.1002/anie.202205814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Shuang Qiu
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China
| | - Xin Zhang
- Department of Chemistry Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Chaopeng Hu
- Department of Chemistry Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Hongxu Chu
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China
| | - Qianli Li
- School of Chemistry and Chemical Engineering Liaocheng University Liaocheng 252059 China
| | - David A. Ruiz
- Department of Chemistry Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Liu Leo Liu
- Department of Chemistry Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Chen‐Ho Tung
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China
| | - Lingbing Kong
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China
- State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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8
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He Q, Cao L, Wei Y, Dake GR. Utility of 2‐Diphenylphosphoryloxy‐1,3‐Dienes in Multicomponent Hetero‐Diels–Alder Reactions to Construct Functionalized Six‐Membered Nitrogen Heterocycles. Chemistry 2022; 28:e202201328. [DOI: 10.1002/chem.202201328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Qiuyu He
- Department of Chemistry University of British Columbia, Vancouver 2036 Main Mall Vancouver, B.C. V6T 1Z1 Canada
| | - Lirong Cao
- Department of Chemistry University of British Columbia, Vancouver 2036 Main Mall Vancouver, B.C. V6T 1Z1 Canada
| | - Yiran Wei
- Department of Chemistry University of British Columbia, Vancouver 2036 Main Mall Vancouver, B.C. V6T 1Z1 Canada
| | - Gregory R. Dake
- Department of Chemistry University of British Columbia, Vancouver 2036 Main Mall Vancouver, B.C. V6T 1Z1 Canada
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9
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Sarkar S, Sarkar P, Samanta D, Pati SK, Rath SP. Cooperativity in Diiron(III)porphyrin Dication Diradical-Catalyzed Oxa-Diels–Alder Reactions: Spectroscopic and Mechanistic Insights. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sabyasachi Sarkar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Pallavi Sarkar
- Theoretical Sciences Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Center for Advanced Scientific Research, Bangalore 560064, India
| | - Deepannita Samanta
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Swapan K Pati
- Theoretical Sciences Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Center for Advanced Scientific Research, Bangalore 560064, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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10
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Pellissier H. Recent developments in enantioselective titanium-catalyzed transformations. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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11
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Qiu S, Zhang X, Hu C, Chu H, Li Q, Ruiz DA, Liu LL, Tung CH, Kong L. Unveiling Hetero‐Enyne Reactivity of Aryliminoboranes: Dearomative Hetero‐Diels‐Alder‐Like Reactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shuang Qiu
- Shandong University School of Chemistry and Chemical Engineering CHINA
| | - Xin Zhang
- Southern University of Science and Technology Department of Chemistry CHINA
| | - Chaopeng Hu
- Southern University of Science and Technology Department of Chemistry CHINA
| | - Hongxu Chu
- Shandong University School of Chemistry and Chemical Engineering CHINA
| | - Qianli Li
- Liaocheng University School of Chemistry and Chemical Engineering CHINA
| | - David A Ruiz
- Southern University of Science and Technology Department of Chemistry CHINA
| | - Liu Leo Liu
- Southern University of Science and Technology Department of Chemistry CHINA
| | - Chen-Ho Tung
- Shandong University School of Chemistry and Chemical Engineering CHINA
| | - Lingbing Kong
- Shandong University School of Chemistry and Chemical Engineering 27 Shanda Nanlu 250100 Jinan CHINA
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12
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Li K, Huang S, Liu T, Jia S, Yan H. Organocatalytic Asymmetric Dearomatizing Hetero-Diels-Alder Reaction of Nonactivated Arenes. J Am Chem Soc 2022; 144:7374-7381. [PMID: 35417152 DOI: 10.1021/jacs.2c01106] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nonactivated arenes, such as benzene derivatives, are chemically inert due to their intrinsic aromaticity and low polarity. The catalytic asymmetric dearomatization (CADA, coined by You and co-workers) of the nonactivated arenes represents a formidable challenge. We herein demonstrated an organocatalytic asymmetric dearomatizing hetero-Diels-Alder reaction of benzene derivatives. The tunable regioselectivity of this strategy allowed delivery of a diversity of stereochemically complex polycyclic compounds and oxahelicenes with excellent stereoselectivity. The high complexity and three-dimensionality of the products are crucial for their potential applications in materials science and drug discovery. Mechanistic studies suggested that this reaction proceeds through a chiral tetra-substituted vinylidene ortho-quinone methide (VQM) intermediate, which is extremely active to overcome the loss of aromaticity of benzene derivatives with concomitant chirality transfer.
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Affiliation(s)
- Kai Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Shengli Huang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Tianyu Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Shiqi Jia
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
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13
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Yu W, Song J, Yu SY, Kim J. Cyclocarbonylation of Allenyl Glyoxylate Strategy to Build the Tricyclic Core of Cyclocalopin A. Org Lett 2022; 24:2242-2247. [PMID: 35297249 DOI: 10.1021/acs.orglett.2c00625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An approach for the construction of the tricyclic framework of naturally occurring cyclocalopin A is described. The establishment of the crucial intermediate α-methylene bis-γ,δ-lactone involves a [2 + 2 + 1]-cyclocarbonylation of newly introduced allenyl glyoxylate via direct methods using Mo(CO)6 or sequential reaction pathways. The sequential reaction route involved a stannylative cyclization by Pd(0) catalyst, bromination of an vinyl stannane moiety, and final cyclocarbonylation by palladium catalysis to provide the bis-γ,δ-lactone. The feasibility of forming the spiro-system by an exo-selective [4 + 2]-cycloaddition was accomplished.
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Affiliation(s)
- Weonju Yu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea
| | - Jieun Song
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea
| | - Suh Young Yu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea
| | - Jimin Kim
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea
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14
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Yang XX, Zhao XL, ouyang Q, Du W, Chen YC. Palladium-catalysed diastereodivergent inverse-electron-demand oxa-Diels-Alder reactions of in situ formed cyclopentadienones via ligand-control. Org Chem Front 2022. [DOI: 10.1039/d1qo01876k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report Pd(0)-catalysed asymmetric inverse-electron-demand oxa-Diels-Alder reactions between the carbonates of 4-hydroxy-2-cyclopentenones and α-cyano chalcones, by in situ generating η2-Pd(0)-cyclopentadienone complexes as HOMO-raised dienophiles, and diastereodivergent synthesis could be...
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15
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Zhou D, Zhu LW, Wu BH, Xu ZK, Wan LS. End-functionalized polymers by controlled/living radical polymerizations: synthesis and applications. Polym Chem 2022. [DOI: 10.1039/d1py01252e] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This review focuses on end-functionalized polymers synthesized by controlled/living radical polymerizations and the applications in fields including bioconjugate formation, surface modification, topology construction, and self-assembly.
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Affiliation(s)
- Di Zhou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Liang-Wei Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Bai-Heng Wu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhi-Kang Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ling-Shu Wan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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16
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Hou Y, Cui M, Zhang K, Chen L, Tian R. Annulation of phosphole sulfides via [3 + 2] cycloaddition with nitrones. Org Chem Front 2022. [DOI: 10.1039/d2qo01376b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We developed a facile pathway for the construction of the phospholene fused isoxazolidine skeleton through the [3 + 2] cycloaddition reaction of phosphole sulfides.
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Affiliation(s)
- Yueshan Hou
- College of Chemistry, Green Catalysis Center, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Mingyue Cui
- College of Chemistry, Green Catalysis Center, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Keke Zhang
- College of Chemistry, Green Catalysis Center, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Lihui Chen
- College of Chemistry, Green Catalysis Center, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Rongqiang Tian
- College of Chemistry, Green Catalysis Center, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, 450001, Henan, China
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17
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Caballero-García G, Goodman JM. N-Triflylphosphoramides: highly acidic catalysts for asymmetric transformations. Org Biomol Chem 2021; 19:9565-9618. [PMID: 34723293 DOI: 10.1039/d1ob01708j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
N-Triflylphosphoramides (NTPA), have become increasingly popular catalysts in the development of enantioselective transformations as they are stronger Brønsted acids than the corresponding phosphoric acids (PA). Their highly acidic, asymmetric active site can activate difficult, unreactive substrates. In this review, we present an account of asymmetric transformations using this type of catalyst that have been reported in the past ten years and we classify these reactions using the enantio-determining step as the key criterion. This compendium of NTPA-catalysed reactions is organised into the following categories: (1) cycloadditions, (2) electrocyclisations, polyene and related cyclisations, (3) addition reactions to imines, (4) electrophilic aromatic substitutions, (5) addition reactions to carbocations, (6) aldol and related reactions, (7) addition reactions to double bonds, and (8) rearrangements and desymmetrisations. We highlight the use of NTPA in total synthesis and suggest mnemonics which account for their enantioselectivity.
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Affiliation(s)
| | - Jonathan M Goodman
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
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18
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Chen X, Zhang G, Zeng R. Dehydrogenative Aza-[4 + 2] Cycloaddition of Amines with 1,3-Dienes via Dual Catalysis. Org Lett 2021; 23:7144-7149. [PMID: 34459616 DOI: 10.1021/acs.orglett.1c02558] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We describe a synergistic utilization of copper catalysis and proton-transfer catalysis that enables an atom- and step-economical aza-[4 + 2] cycloaddition reaction of readily available N-arylamino carbonyl compounds with simple 1,3-dienes. The reaction proceeds smoothly under an air atmosphere and produces water as the sole side product. Whereas the amines can directly serve as the C- and N-atom donors, this operationally simple protocol provides green, rapid, and efficient access to 1,2,3,6-tetrahydropyridines with a broad scope.
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Affiliation(s)
- Xiaoxiao Chen
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Guoxiang Zhang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Rong Zeng
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China.,Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
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19
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Fährmann J, Hilt G. Wechselstromelektrolyse als effizientes Instrument für die direkte elektrochemische Oxidation von Hydroxamsäuren für die Acyl‐Nitroso Diels‐Alder‐Reaktion. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107148] [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]
Affiliation(s)
- Jan Fährmann
- Institut für Chemie Universität Oldenburg Carl-von-Ossietzky-Straße 9–11 26111 Oldenburg Deutschland
| | - Gerhard Hilt
- Institut für Chemie Universität Oldenburg Carl-von-Ossietzky-Straße 9–11 26111 Oldenburg Deutschland
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20
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Fährmann J, Hilt G. Alternating Current Electrolysis as Efficient Tool for the Direct Electrochemical Oxidation of Hydroxamic Acids for Acyl Nitroso Diels-Alder Reactions. Angew Chem Int Ed Engl 2021; 60:20313-20317. [PMID: 34232547 PMCID: PMC8456936 DOI: 10.1002/anie.202107148] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Indexed: 01/15/2023]
Abstract
The acyl nitroso Diels-Alder reaction of 1,3-dienes with electrochemically oxidised hydroxamic acids is described. By using alternating current electrolysis, their typical electro-induced decomposition could be suppressed in favour of the 1,2-oxazine cycloaddition products. The reaction was optimised using Design of Experiments (DoE) and a sensitivity test was conducted. A mixture of triethylamine/hexafluoroisopropanol served as supporting electrolyte in dichloromethane, thus giving products of high purity after evaporation of the volatiles without further purification. The optimised reaction conditions were applied to various 1,3-dienes and hydroxamic acids, giving up to 96 % isolated yield.
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Affiliation(s)
- Jan Fährmann
- Institut für ChemieUniversität OldenburgCarl-von-Ossietzky-Straße 9–1126111OldenburgGermany
| | - Gerhard Hilt
- Institut für ChemieUniversität OldenburgCarl-von-Ossietzky-Straße 9–1126111OldenburgGermany
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21
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Zhao Q, Li Y, Zhang QX, Cheng JP, Li X. Catalytic Asymmetric Aza-Diels-Alder Reaction of Ketimines and Unactivated Dienes. Angew Chem Int Ed Engl 2021; 60:17608-17614. [PMID: 34036702 DOI: 10.1002/anie.202104788] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/11/2021] [Indexed: 12/19/2022]
Abstract
The enantioselective aza-Diels-Alder reaction is efficient for constructing chiral tetrahydropyridines, but the catalytic asymmetric aza-Diels-Alder reaction of ketimines with unactivated dienes is still a challenging topic. Herein, guided by computational screening, a highly enantioselective aza-Diels-Alder reaction of 2-aryl-3H-indol-3-ones with unactivated dienes was realized by using a B(C6 F5 )3 /chiral phosphoric acid catalyst system under mild conditions. The reaction has a broad scope with respect to both aza-Diels-Alder reaction partners and hence offers rapid access to an array of tetrahydropyridine derivatives with pretty outcomes (up to 99 % yield, >20:1 dr and 98:2 er). The reaction is very efficient: lowering catalyst loadings for the model reaction to 0.1 mol %, enantioselectivity is still maintained. The synthetic utility was confirmed by transformations of the products. DFT calculations provide convincing evidence for the interpretation of stereoselection.
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Affiliation(s)
- Qun Zhao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Yao Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Qing-Xia Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.,Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
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22
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Zhao Q, Li Y, Zhang Q, Cheng J, Li X. Catalytic Asymmetric Aza‐Diels–Alder Reaction of Ketimines and Unactivated Dienes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qun Zhao
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Yao Li
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Qing‐Xia Zhang
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Jin‐Pei Cheng
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 P. R. China
- Center of Basic Molecular Science (CBMS) Department of Chemistry Tsinghua University Beijing 100084 P. R. China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 P. R. China
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23
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Morja MI, Chauhan PM, Chikhalia KH. Palladium‐Catalyzed Novel C(formyl)‐C(aryl)/C(aryl)‐N(amine) Coupling Sequence Between 2‐(Methylamino)nicotinaldehyde and 3‐Bromo‐2‐chlorothiophene: An Efficient Construction of 4‐Pyridone Fused Hybrid Scaffolds. ChemistrySelect 2021. [DOI: 10.1002/slct.202100790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mayur I. Morja
- Department of Chemistry Veer Narmad South Gujarat University Surat 395007 Gujarat India
| | | | - Kishor H. Chikhalia
- Department of Chemistry Veer Narmad South Gujarat University Surat 395007 Gujarat India
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24
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Palanimuthu A, Chen C, Lee GH. Diastereoselective synthesis of highly substituted tetrahydroquinolines using benzoylacetonitrile via aza Diels–Alder reaction. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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25
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Khorief Nacereddine A, Merzoud L, Morell C, Chermette H. A computational investigation of the selectivity and mechanism of the Lewis acid catalyzed oxa-Diels-Alder cycloaddition of substituted diene with benzaldehyde. J Comput Chem 2021; 42:1296-1311. [PMID: 33931864 DOI: 10.1002/jcc.26547] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/09/2021] [Accepted: 04/14/2021] [Indexed: 11/11/2022]
Abstract
The selectivity and the mechanism of the uncatalyzed and AlCl3 catalyzed hetero-Diels-Alder reaction (HDR) between ([E]-4-methylpenta-2,4-dienyloxy)(tert-butyl)dimethylsilane 1 and benzaldehyde 2 have been studied using density functional theory at the MPWB1K/6-31G(d) level of theory. The uncatalyzed HDR between diene 1 and alkene 2 is characterized by a polar character and proceeds via an asynchronous one-step mechanism for the meta paths and synchronous for the ortho ones. In the presence of AlCl3 catalyst, the mechanism changes to be stepwise, while the first step is the rate-determining step. The activation energies widely decrease, and the polar character increases dramatically. A large analysis of the mechanism is performed using the activation strain model/energy decomposition analysis (ASM/EDA) model, the natural bond orbital (NBO) and state specific dual descriptors (SSDDs). The obtained results indicate that the combined interaction energy associated with the distortion of the reactants in these HDR are at the origin of the observed kinetics. NBO analyses were applied to estimate the Lewis-acid catalyst donor-acceptor interaction with the molecular system. The SSDD analysis shed light into the orientation effects on the reaction kinetics by providing important information about charge transfer interactions during the chemical reaction. It indicates that the more favorable HDR pathway have the lowest excitation energies, facilitating the interaction between diene 1 and benzaldehyde 2 moieties. Non-covalent interaction (NCI) and QTAIM analyses of the meta-endo structure indicate that the presence of several weak NCIs formed at this approach is at the origin of the meta-endo selectivity.
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Affiliation(s)
- Abdelmalek Khorief Nacereddine
- Laboratory of Physical Chemistry and Biology of Materials, Department of Physics and Chemistry, Higher Normal School of Technological Education-Skikda, City of Boucetta Brothers, Azzaba, Skikda, Algeria
| | - Lynda Merzoud
- Institut des Sciences Analytiques, Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
| | - Christophe Morell
- Institut des Sciences Analytiques, Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
| | - Henry Chermette
- Institut des Sciences Analytiques, Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
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26
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Villabona M, Wiedbrauk S, Feist F, Guirado G, Hernando J, Barner-Kowollik C. Dual-Wavelength Gated oxo-Diels-Alder Photoligation. Org Lett 2021; 23:2405-2410. [PMID: 33620229 PMCID: PMC8483443 DOI: 10.1021/acs.orglett.1c00015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The control of chemical functionalization with orthogonal light stimuli paves the way toward manipulating materials with unprecedented spatiotemporal resolution. To reach this goal, we herein introduce a photochemical reaction system that enables two-color control of covalent ligation via an oxo-Diels-Alder cycloaddition between two separate light-responsive molecular entities: a UV-activated photocaged diene based on ortho-quinodimethanes and a carbonyl dienophile appended to a diarylethene photoswitch, whose reactivity can be modulated upon illumination with UV and visible light.
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Affiliation(s)
- Marc Villabona
- Department de Química, Universitat Autònoma de Barcelona, Edifici C/n, Campus UAB, 08193 Cerdanyola del Vallès, Spain
| | - Sandra Wiedbrauk
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Australia (QUT), 2 George Street, Brisbane, Queensland 4000, Australia
| | - Florian Feist
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Australia (QUT), 2 George Street, Brisbane, Queensland 4000, Australia
| | - Gonzalo Guirado
- Department de Química, Universitat Autònoma de Barcelona, Edifici C/n, Campus UAB, 08193 Cerdanyola del Vallès, Spain
| | - Jordi Hernando
- Department de Química, Universitat Autònoma de Barcelona, Edifici C/n, Campus UAB, 08193 Cerdanyola del Vallès, Spain
| | - Christopher Barner-Kowollik
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Australia (QUT), 2 George Street, Brisbane, Queensland 4000, Australia
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27
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Qin A, Zhang Q, Qian H, Han Y, Ma S. Rh‐Catalyzed
Kinetic
Resolution‐Based
Enantioselective [4+2]‐
Cycloaddition‐Isomerization
of Allene‐1,3‐dienes. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anni Qin
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
| | - Qian Zhang
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
| | - Yulin Han
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 China
- 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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28
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Vinogradov MG, Turova OV, Zlotin SG. Catalytic Asymmetric Aza‐Diels‐Alder Reaction: Pivotal Milestones and Recent Applications to Synthesis of Nitrogen‐Containing Heterocycles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001307] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Maxim G. Vinogradov
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. 119991 Moscow Russian Federation
| | - Olga V. Turova
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. 119991 Moscow Russian Federation
| | - Sergei G. Zlotin
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences 47 Leninsky prosp. 119991 Moscow Russian Federation
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29
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Zhang K, Zhang Q, Wei D, Tian R, Duan Z. Hetero-Diels–Alder reactions of 2 H-phospholes with allenes: synthesis and functionalization of 6-methylene-1-phosphanorbornenes. Org Chem Front 2021. [DOI: 10.1039/d1qo00535a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phospha-Diels–Alder reaction between 2H-phospholes and arylallenes affords 6-methylene-1-phosphanorbornenes in high yields with excellent regioselectivity. Further functionalization provides a 1-phosphanorbornene modified PCH2CH2P skeleton.
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Affiliation(s)
- Keke Zhang
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
| | - Qiaoyu Zhang
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
| | - Donghui Wei
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
| | - Rongqiang Tian
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
| | - Zheng Duan
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
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30
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Asymmetric construction of tetrahedral chiral zinc with high configurational stability and catalytic activity. Nat Commun 2020; 11:6263. [PMID: 33298960 PMCID: PMC7726038 DOI: 10.1038/s41467-020-20074-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/12/2020] [Indexed: 12/13/2022] Open
Abstract
Chiral metal complexes show promise as asymmetric catalysts and optical materials. Chiral-at-metal complexes composed of achiral ligands have expanded the versatility and applicability of chiral metal complexes, especially for octahedral and half-sandwich complexes. However, Werner-type tetrahedral complexes with a stereogenic metal centre are rarely used as chiral-at-metal complexes because they are too labile to ensure the absolute configuration of the metal centre. Here we report the asymmetric construction of a tetrahedral chiral-at-zinc complex with high configurational stability, using an unsymmetric tridentate ligand. Coordination/substitution of a chiral auxiliary ligand on zinc followed by crystallisation yields an enantiopure chiral-only-at-zinc complex (> 99% ee). The enantiomer excess remains very high at 99% ee even after heating at 70 °C in benzene for one week. With this configurationally stable zinc complex of the tridentate ligand, the remaining one labile site on the zinc can be used for a highly selective asymmetric oxa-Diels-Alder reaction (98% yield, 87% ee) without substantial racemisation.
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31
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Rufino VC, Pliego JR. The role of carboxylic acid impurity in the mechanism of the formation of aldimines in aprotic solvents. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.113053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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32
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Stojanović M, Bugarski S, Baranac-Stojanović M. Synthesis of 2,3-Dihydro-4-pyridones and 4-Pyridones by the Cyclization Reaction of Ester-Tethered Enaminones. J Org Chem 2020; 85:13495-13507. [PMID: 33092340 DOI: 10.1021/acs.joc.0c01537] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
2,3-Dihydro-4-pyridone skeleton is an important building block in organic synthesis because it features several reaction sites with nucleophilic or electrophilic properties. Herein, we disclose a method for its formation by intramolecular cyclization of ester-tethered enaminones, which can easily be synthesized from readily available materials, such as amines, activated alkynes, and activated alkenes. 2,3-Dihydro-4-pyridones have been isolated in 41-90% yields. We also demonstrate the transformation of these heterocycles into another important class of compounds, 4-pyridones, by utilizing 2,3,5,6-tetrachloro-p-benzoquinone (chloranil) as an oxidizing agent. The latter products were isolated in 65-94% yields.
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Affiliation(s)
- Milovan Stojanović
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy-Center for Chemistry, Njegoševa 12, P.O. Box 473, 11000 Belgrade, Serbia
| | - Slobodan Bugarski
- University of Belgrade-Faculty of Chemistry, Studentski trg 12-16, P.O. Box 158, 11000 Belgrade, Serbia
| | - Marija Baranac-Stojanović
- University of Belgrade-Faculty of Chemistry, Studentski trg 12-16, P.O. Box 158, 11000 Belgrade, Serbia
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33
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Zhang S, Bacheley L, Young CM, Stark DG, O'Riordan T, Slawin AMZ, Smith AD. Isothiourea‐Catalyzed Functionalization of Pyrrolyl‐ and Indolylacetic Acid: Enantioselective Synthesis of Dihydropyridinones and One‐pot Synthesis of Pyridinones. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shuyue Zhang
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Lucas Bacheley
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Claire M. Young
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Daniel G. Stark
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Timothy O'Riordan
- Syngenta Jealott's Hill International Research Centre Bracknell Berkshire RG42 6EY UK
| | - Alexandra M. Z. Slawin
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Andrew D. Smith
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
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34
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Werr M, Kaifer E, Himmel H. Hetero Diels-Alder Reactions with a Dicationic Urea Azine Derived Azo Dienophile and Their Use for the Synthesis of an Electron-Rich Pentacene. Chemistry 2020; 26:12328-12332. [PMID: 32201982 PMCID: PMC7589293 DOI: 10.1002/chem.202001342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Indexed: 11/19/2022]
Abstract
Herein, the first hetero Diels-Alder (DA) reactions with a stable, dicationic urea azine derived azo dienophile, synthesized by two-electron oxidation of a neutral urea azine are reported. Several charged DA products were synthesized in good yield and fully characterized. The DA adduct of anthracene is in thermal equilibrium with the reactants at room temperature, and the reaction enthalpy and entropy were determined from the temperature-dependent equilibrium constant. Furthermore, base addition to solutions of the pentacene DA product led to deprotonation, cleavage of the N-N bond, and formation of an electron-rich 6,13-bisguanidinyl-substituted pentacene. The redox and optical properties of this new pentacene derivative were studied. Furthermore, the dication resulting from its two-electron oxidation was synthesized and fully characterized. The results disclose a new elegant route to electron-rich pentacene derivatives.
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Affiliation(s)
- Marco Werr
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Hans‐Jörg Himmel
- Anorganisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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35
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Xu WL, Hu W, Zhao WM, Wang M, Chen J, Zhou L. Copper(I)/DDQ-Mediated Double-Dehydrogenative Diels-Alder Reaction of Aryl Butenes with 1,4-Diketones and Indolones. Org Lett 2020; 22:7169-7174. [PMID: 32902298 DOI: 10.1021/acs.orglett.0c02486] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A copper(I)/DDQ-mediated double-dehydrogenative Diels-Alder (DDDA) reaction of simple butenes with 1,4-diketones and indolones has been established for the first time. This strategy is based on a tandem double-dehydrogenation/Diels-Alder reaction from nonprefunctionalized starting materials, in which both a diene and dienophile were in situ generated via activation of fourfold inert C(sp3)-H bonds in one catalytic system.
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Affiliation(s)
- Wen-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Wei Hu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Wei-Ming Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Min Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
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36
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Skrzyńska A, Frankowski S, Albrecht Ł. Cyclic 1‐Azadienes in the Organocatalytic Inverse‐Electron‐Demand Aza‐Diels‐Alder Cycloadditions. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000332] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Anna Skrzyńska
- Institute of Organic Chemistry Faculty of Chemistry Lodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Sebastian Frankowski
- Institute of Organic Chemistry Faculty of Chemistry Lodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry Faculty of Chemistry Lodz University of Technology Żeromskiego 116 90-924 Łódź Poland
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37
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Luo H, He C, Jiang H, Zhu S. Rapid Access to Oxabicyclo[2.2.2]octane Skeleton through Cu(I)‐Catalyzed Generation and Trapping of Vinyl‐
o
‐quinodimethanes (
Vinyl‐
o
‐QDMs
)
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000144] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hejiang Luo
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou Guangzhou 510640 China
| | - Chuan He
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou Guangzhou 510640 China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou Guangzhou 510640 China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou Guangzhou 510640 China
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38
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Yang Y, Zhang X, Zhong LP, Lan J, Li X, Li CC, Chung LW. Unusual KIE and dynamics effects in the Fe-catalyzed hetero-Diels-Alder reaction of unactivated aldehydes and dienes. Nat Commun 2020; 11:1850. [PMID: 32296076 PMCID: PMC7160212 DOI: 10.1038/s41467-020-15599-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 03/13/2020] [Indexed: 12/30/2022] Open
Abstract
Hetero-Diels-Alder (HDA) reaction is an important synthetic method for many natural products. An iron(III) catalyst was developed to catalyze the challenging HDA reaction of unactivated aldehydes and dienes with high selectivity. Here we report extensive density-functional theory (DFT) calculations and molecular dynamics simulations that show effects of iron (including its coordinate mode and/or spin state) on the dynamics of this reaction: considerably enhancing dynamically stepwise process, broadening entrance channel and narrowing exit channel from concerted asynchronous transition states. Also, our combined computational and experimental secondary KIE studies reveal unexpectedly large KIE values for the five-coordinate pathway even with considerable C-C bond forming, due to equilibrium isotope effect from the change in the metal coordination. Moreover, steric and electronic effects are computationally shown to dictate the C=O chemoselectivity for an α,β-unsaturated aldehyde, which is verified experimentally. Our mechanistic study may help design homogeneous, heterogeneous and biological catalysts for this challenging reaction.
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Affiliation(s)
- Yuhong Yang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiaoyong Zhang
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Li-Ping Zhong
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jialing Lan
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xin Li
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Lung Wa Chung
- Shenzhen Grubbs Institute, Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
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39
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Roy P, Anjum SR, Ramachary DB. One-Pot Knoevenagel and [4 + 2] Cycloaddition as a Platform for Calliviminones. Org Lett 2020; 22:2897-2901. [DOI: 10.1021/acs.orglett.0c00518] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pritam Roy
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - S. Rehana Anjum
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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40
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Ishihara J. Chiral Lewis Acid-template Diels-Alder Reaction and the Application of Natural Product Synthesis. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jun Ishihara
- Graduate School of Biomedical Sciences, Nagasaki University
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41
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Richaud A, López MJ, Mojica M, Alonso JA, Méndez F. Dimerization of pentacyclopentacorannulene C 30H 10 as a strategy to produce C 60H 20 as a precursor for C 60. RSC Adv 2020; 10:3689-3693. [PMID: 35492679 PMCID: PMC9048444 DOI: 10.1039/c9ra09804f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 01/15/2020] [Indexed: 11/29/2022] Open
Abstract
The chemical synthesis of C60 fullerene in the laboratory is still a challenge. In order to achieve this goal, we propose a synthetic route based on the dimerization between two pentacyclopentacorannulene (C30H10) fragments employing the Diels-Alder cycloaddition reaction. Density functional calculations indicate that a step wise non-concerted dimerization mechanism of C30H10 is favored over a one stage dimerization. The step wise dimerization implies the sequential formation of 2, 4, 6, and 10 new C-C bonds between the two fragments. This leads to the formation of the Diels-Alder cycloadduct C60H20. The results then suggest the synthesis of C60H20 as a precursor for C60. The synthesis of the analogue C60F20 has already been reported.
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Affiliation(s)
- Arlette Richaud
- División de Ciencias Básicas e Ingeniería, Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa A.P. 55-534 México D. F. 09340 Mexico
- LE STUDIUM RESEARCH FELLOW, Loire Valley Institute for Advanced Studies Orléans & Tours France
- Conditions Extrêmes et Matériaux: Haute Température et Irradiation (CEMHTI), UPR 3079 CNRS, CEMHTI 1 Avenue de la Recherche Scientifique 45071 Orléans France
| | - María J López
- Departamento de Física Teórica, Atómica y Óptica, Universidad de Valladolid 47011 Valladolid Spain
| | - Martha Mojica
- División de Ciencias Básicas e Ingeniería, Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa A.P. 55-534 México D. F. 09340 Mexico
| | - Julio A Alonso
- Departamento de Física Teórica, Atómica y Óptica, Universidad de Valladolid 47011 Valladolid Spain
- Donostia International Physics Center 20018 San Sebastián Spain
| | - Francisco Méndez
- División de Ciencias Básicas e Ingeniería, Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa A.P. 55-534 México D. F. 09340 Mexico
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42
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Feng J, Chen Y, Qin W, Huang Y. Phosphine-Catalyzed (3 + 2)/(3 + 2) Sequential Annulation of γ-Vinyl Allenoates: Access to Fused Carbocycles. Org Lett 2020; 22:433-437. [PMID: 31873035 DOI: 10.1021/acs.orglett.9b04176] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first (3 + 2)/(3 + 2) sequential annulation of γ-vinyl allenoates with alkylidenemalononitriles enabled by phosphine catalysis has been reported. A broad range of structurally dense tetra- and penta-substituted bicyclic[3,3,0]octene derivatives, containing a quaternary center and three sequential stereogenic center, were synthesized in good to excellent yields. In this approach, three new C-C bonds are formed in one pot, and εC and αC of γ-vinyl allenoate are two electrophilic centers, whereas its γC exhibits nucleophilic reactivity.
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Affiliation(s)
| | | | | | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300071 , China
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43
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Li H, Cui CX, Zhang GH, Li XQ, Yang J. Regioselective Synthesis of Functionalized Dihydropyrones via the Petasis Reaction. J Org Chem 2020; 85:1285-1290. [PMID: 31852188 DOI: 10.1021/acs.joc.9b02651] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel synthesis methodology for the construction of functionalized dihydropyrones has been developed with amines, glyoxylic acid, and 4-substituted-1,2-oxaborol-2(5H)-ols from the Petasis reaction. Mechanistic investigation indicated the intermolecular SN2 cyclization to provide 3,6-dihydro-2H-pyran-2-ones (3,6-DHP) and 5,6-dihydro-2H-pyran-2-ones (5,6-DHP) in one step with moderate to excellent yields.
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Affiliation(s)
- Hui Li
- Shaanxi University of Science & Technology , Shaanxi Xi'an 710021 , China.,CAS Key Laboratory of Energy Regulation Materials , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Chun-Xiao Cui
- CAS Key Laboratory of Energy Regulation Materials , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Guang-Hua Zhang
- Shaanxi University of Science & Technology , Shaanxi Xi'an 710021 , China
| | - Xiao-Qiang Li
- CAS Key Laboratory of Energy Regulation Materials , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Jun Yang
- CAS Key Laboratory of Energy Regulation Materials , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
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44
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Joshi H, Yadav A, Das A, Singh VK. Organocatalytic Asymmetric Hetero-Diels–Alder Reaction of in Situ Generated Dienes: Access to α,β-Unsaturated δ-Lactones Featuring CF3-Substituted Quaternary Stereocenter. J Org Chem 2020; 85:3202-3212. [DOI: 10.1021/acs.joc.9b03076] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Harshit Joshi
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Ankit Yadav
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Arko Das
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India
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45
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Frankowski S, Romaniszyn M, Skrzyńska A, Albrecht Ł. The Game of Electrons: Organocatalytic Higher‐Order Cycloadditions Involving Fulvene‐ and Tropone‐Derived Systems. Chemistry 2019; 26:2120-2132. [DOI: 10.1002/chem.201904157] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 10/17/2019] [Indexed: 01/16/2023]
Affiliation(s)
- Sebastian Frankowski
- Institute of Organic ChemistryFaculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Marta Romaniszyn
- Institute of Organic ChemistryFaculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Anna Skrzyńska
- Institute of Organic ChemistryFaculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Łukasz Albrecht
- Institute of Organic ChemistryFaculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
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46
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Mizutsu R, Asato R, Martin CJ, Yamada M, Nishikawa Y, Katao S, Yamada M, Nakashima T, Kawai T. Photo-Lewis Acid Generator Based on Radical-Free 6π Photo-Cyclization Reaction. J Am Chem Soc 2019; 141:20043-20047. [PMID: 31814390 DOI: 10.1021/jacs.9b11821] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We present here a new photo-active molecule which acts as a photo-Lewis acid generator (PLAG) based on photo-chemical 6π-percyclization. Photo-illumination of the PLAG molecule produces a condensed aromatic carbocation with a triflate counteranion, which exhibits Lewis acid chemical catalytic reactivity such as initiation of the polymerization of epoxy monomers and catalysis of Mukaiyama-aldol reactions. The terminal-end structure in the epoxy polymerization was modified with the Lewis acid fragment. The carbocation induced the Mukaiyama-aldol reaction as a new photo-gated system with remarkably high catalytic reactivity and turnover numbers higher than 60. The photo-chemical quantum yield of the carbocation generation is 50%, which is considerably higher than obtained with most Brønsted photo-acid generators.
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Affiliation(s)
- Ryo Mizutsu
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan
| | - Ryosuke Asato
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan.,NAIST-CEMES International Collaborative Laboratory for Supraphotoactive Systems , NAIST, CEMES-UPR 8011 CNRS , 29, rue Jeanne Marvig , BP 94347, 31055 Toulouse Cedex 4 , France
| | - Colin J Martin
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan.,NAIST-CEMES International Collaborative Laboratory for Supraphotoactive Systems , NAIST, CEMES-UPR 8011 CNRS , 29, rue Jeanne Marvig , BP 94347, 31055 Toulouse Cedex 4 , France
| | - Mihoko Yamada
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan
| | - Yoshiko Nishikawa
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan
| | - Shohei Katao
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan
| | - Miku Yamada
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan
| | - Takuya Nakashima
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan
| | - Tsuyoshi Kawai
- Division of Materials Science , Nara Institute of Science and Technology (NAIST) , Ikoma , Nara 630-0192 , Japan.,NAIST-CEMES International Collaborative Laboratory for Supraphotoactive Systems , NAIST, CEMES-UPR 8011 CNRS , 29, rue Jeanne Marvig , BP 94347, 31055 Toulouse Cedex 4 , France
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47
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Wang YH, Tian JS, Tan PW, Cao Q, Zhang XX, Cao ZY, Zhou F, Wang X, Zhou J. Regiodivergent Intramolecular Nucleophilic Addition of Ketimines for the Diverse Synthesis of Azacycles. Angew Chem Int Ed Engl 2019; 59:1634-1643. [PMID: 31755631 DOI: 10.1002/anie.201910864] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 11/01/2019] [Indexed: 12/15/2022]
Abstract
Azacycles such as indoles and tetrahydroquinolines are privileged structures in drug development. Reported here is an unprecedented regiodivergent intramolecular nucleophilic addition reaction of imines as a flexible approach to access N-functionalized indoles and tetrahydroquinolines, by the control of reaction at the N-terminus and C-terminus, respectively. Using ketimines derived from 2-(2-nitroethyl)anilines with isatins or α-ketoesters, the regioselective N-attack reaction gives N-functionalized indoles, while the catalytic enantioselective C-attack reaction affords chiral tetrahydroquinolines featuring an α-tetrasubstituted stereocenter. Mechanistic studies reveal that hydrogen-bonding interactions may greatly facilitate such unusual N-attack reactions of imines. The utility of this protocol is highlighted by the catalytic enantioselective formal synthesis of (-)-psychotrimine, and the construction of various fused aza-heterocycles.
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Affiliation(s)
- Yu-Hui Wang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, China.,Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Jun-Song Tian
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, China
| | - Peng-Wei Tan
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, China
| | - Qiang Cao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, China
| | - Xue-Xin Zhang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, China
| | - Zhong-Yan Cao
- College of chemical engineering, Zhejiang university of technology, Chaowang road, 18N, Hangzhou, 310014, P. R. China
| | - Feng Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, China
| | - Xin Wang
- College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, P. R. China
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, 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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48
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Wang Y, Tian J, Tan P, Cao Q, Zhang X, Cao Z, Zhou F, Wang X, Zhou J. Regiodivergent Intramolecular Nucleophilic Addition of Ketimines for the Diverse Synthesis of Azacycles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yu‐Hui Wang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663 N. Zhongshan Road Shanghai 200062 China
- Innovation Research Institute of Traditional Chinese Medicine (IRI) Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 China
| | - Jun‐Song Tian
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663 N. Zhongshan Road Shanghai 200062 China
| | - Peng‐Wei Tan
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663 N. Zhongshan Road Shanghai 200062 China
| | - Qiang Cao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663 N. Zhongshan Road Shanghai 200062 China
| | - Xue‐Xin Zhang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663 N. Zhongshan Road Shanghai 200062 China
| | - Zhong‐Yan Cao
- College of chemical engineering Zhejiang university of technology Chaowang road, 18N Hangzhou 310014 P. R. China
| | - Feng Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663 N. Zhongshan Road Shanghai 200062 China
| | - Xin Wang
- College of Chemistry Sichuan University Chengdu Sichuan 610064 P. R. China
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University 3663 N. Zhongshan Road Shanghai 200062 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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49
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Yadav A, Kanoo P. Metal-Organic Frameworks as Platform for Lewis-Acid-Catalyzed Organic Transformations. Chem Asian J 2019; 14:3531-3551. [PMID: 31509343 DOI: 10.1002/asia.201900876] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/10/2019] [Indexed: 11/05/2022]
Abstract
Metal-organic frameworks (MOFs) are highly promising Lewis acid catalysts; they either inherently possess Lewis acid sites (LASs) on it or the LASs can be generated through various post-synthetic methods, the later can be performed in MOFs in a trivial fashion. MOFs are suitable platform for catalysis because of its highly crystalline and porous nature. Moreover, with recent advancements, thermal and chemical stability is not a problem with many MOFs. In this Minireview, an enormous versatility of MOFs, in terms of their microporosity/mesoporosity, size/shape selectivity, chirality, pore size, etc., has been highlighted. These are advantageous for designing and performing various targeted organic transformations. Although, many organic transformations catalyzed by MOFs with LASs have been reported in the recent past. In this Minireview, we have restricted ourselves to four important organic reactions: (i) cyanosilylation, (ii) Diels-Alder reaction, (iii) C-H activation, and (iv) CO2 -addition. The discussion focuses mostly on the recent reports (42 examples).
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Affiliation(s)
- Anand Yadav
- Department of Chemistry, School of Chemical Sciences, Central University of Haryana, Jant-Pali, Mahendergarh, 123031, Haryana, India
| | - Prakash Kanoo
- Department of Chemistry, School of Chemical Sciences, Central University of Haryana, Jant-Pali, Mahendergarh, 123031, Haryana, India
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50
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Guo Y, Harutyunyan SR. Highly Enantioselective Catalytic Addition of Grignard Reagents to N-Heterocyclic Acceptors. Angew Chem Int Ed Engl 2019; 58:12950-12954. [PMID: 31257687 PMCID: PMC6772156 DOI: 10.1002/anie.201906237] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 06/23/2019] [Indexed: 01/14/2023]
Abstract
General methods to prepare chiral N‐heterocyclic molecular scaffolds are greatly sought after because of their significance in medicinal chemistry. Described here is the first general catalytic methodology to access a wide variety of chiral 2‐ and 4‐substituted tetrahydro‐quinolones, dihydro‐4‐pyridones, and piperidones with excellent yields and enantioselectivities, utilizing a single catalyst system.
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Affiliation(s)
- Yafei Guo
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Syuzanna R Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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