1
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Kou M, Zheng J, Li F, Huang L, Cao D, Zhong A, Yang J, Chen D. 1,3-Hydro-di/monofluoromethylation of N, N'-Cyclic Azomethine Imines with HCF 2SO 2Na/H 2CFSO 2Na via Photocatalytic Radical Addition. J Org Chem 2024; 89:11747-11752. [PMID: 39083827 DOI: 10.1021/acs.joc.4c00679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
The radical 1,3-hydro-di/monofluoromethylation of N,N'-cyclic azomethine imines with HCF2SO2Na/H2CFSO2Na via photoredox catalysis is described. This reaction exhibits broad functional group compatibility, providing the desired products in good yields. However, CF3SO2Na failed to produce the trifluoromethyl product. DFT calculations revealed that the transition state activation energy for radical trifluoromethylation was significantly higher and the isotropic charge repulsion makes it difficult for the CF3 radical to transfer electrons.
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Affiliation(s)
- Min Kou
- School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Road, Taizhou 318000, China
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| | - Jianli Zheng
- School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Road, Taizhou 318000, China
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| | - Feifei Li
- School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Road, Taizhou 318000, China
| | - Ling Huang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Road, Taizhou 318000, China
| | - Dongdong Cao
- School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Road, Taizhou 318000, China
| | - Aiguo Zhong
- School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Road, Taizhou 318000, China
| | - Jianguo Yang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Road, Taizhou 318000, China
| | - Dingben Chen
- School of Pharmaceutical and Chemical Engineering, Taizhou University, 1139 Shifu Road, Taizhou 318000, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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2
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Gao Y, Zeng Y, Deng T, Deng Y, Cheng C, Luo J, Deng L. Catalytic Asymmetric Synthesis of Chiral α,α-Dialkyl Aminonitriles via Reaction of Cyanoketimines. J Am Chem Soc 2024; 146:12329-12337. [PMID: 38662599 DOI: 10.1021/jacs.4c03333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2024]
Abstract
Chiral aminonitriles not only are broadly useful building blocks but also increasingly appear as structural motifs in bioactive molecules and pharmaceuticals. The catalytic asymmetric synthesis of chiral aminonitriles, therefore, has been intensively investigated, as reflected in numerous reports of catalytic asymmetric Strecker reactions. Despite such great progress, the catalytic asymmetric synthesis of chiral α,α-dialkyl aminonitriles in a highly selective and efficient manner is still a formidable challenge. Here, we report a new approach for the catalytic asymmetric synthesis of chiral α,α-dialkyl aminonitriles via reaction of cyanoketimines with enals. We demonstrate that this reaction could be carried out with as low as 20 ppm catalyst loading.
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Affiliation(s)
- Yuhong Gao
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University; 600 Dunyu Road, Hangzhou 310030, China
| | - Yiqun Zeng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University; 600 Dunyu Road, Hangzhou 310030, China
| | - Tianran Deng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University; 600 Dunyu Road, Hangzhou 310030, China
| | - Yu Deng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University; 600 Dunyu Road, Hangzhou 310030, China
| | - Cheng Cheng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University; 600 Dunyu Road, Hangzhou 310030, China
| | - Jisheng Luo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University; 600 Dunyu Road, Hangzhou 310030, China
| | - Li Deng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Westlake University; 600 Dunyu Road, Hangzhou 310030, China
- Research Center for Industries of the Future, Westlake University; Hangzhou 310030, Zhejiang Province China
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3
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Yurino T, Wu Z, Suzuki K, Nitta R, Sakaguchi Y, Ohkuma T. Asymmetric Cyanation of α-Ketimino Ester Derivatives with Chiral Ru-Li Combined Catalysts. Org Lett 2024; 26:900-905. [PMID: 38251826 DOI: 10.1021/acs.orglett.3c04175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Asymmetric cyanation of α-ketimino esters catalyzed by combined systems of amino acid/BINAP derivative/Ru(II) complexes and lithium compounds was examined. The use of an appropriate combination of amino acid and BINAP ligands achieved high enantioselectivity for a variety of α-alkynyl (Val/XylBINAP/Ru), α-alkenyl (Val/TolBINAP/Ru), and α-aryl imino esters (Val/XylBINAP/Ru) as well as an isatin-derived cyclic imino amide (t-Leu/BINAP/Ru) to afford the α-cyano-α-amino esters and the amide with an α-nitrogen-substituted quaternary chiral center with up to 98% ee.
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Affiliation(s)
- Taiga Yurino
- Division of Applied Chemistry and Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Zhen Wu
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Kazuaki Suzuki
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Rino Nitta
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Yusuke Sakaguchi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Takeshi Ohkuma
- Division of Applied Chemistry and Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
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4
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Fang S, Liu Z, Wang T. Design and Application of Peptide-Mimic Phosphonium Salt Catalysts in Asymmetric Synthesis. Angew Chem Int Ed Engl 2023; 62:e202307258. [PMID: 37408171 DOI: 10.1002/anie.202307258] [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: 05/23/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/07/2023]
Abstract
Chiral phosphonium salt catalysis, traditionally classified as a type of phase transfer catalysis, has proven to be a powerful strategy for the stereoselective preparation of diverse optically active molecules. However, there still remain numerous forbidding issues of reactivity and selectivity in such well-known organocatalysis system. Accordingly, the development of new and high-performance phosphonium salt catalysts with unique chiral backbones is highly desirable, yet challenging. This Minireview describes the prominent endeavours in the development of a new family of chiral peptide-mimic phosphonium salt catalysts with multiple hydrogen-bonding donors and their applications in a plethora of enantioselective synthesis during the past few years. Hopefully, this minireview will pave a way for further developing much more efficient and privileged chiral ligands/catalysts featuring exclusively catalytic ability in asymmetric synthesis.
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Affiliation(s)
- Siqiang Fang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zanjiao Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
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5
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Zhao Y, Luo Y, Liu J, Zheng C, Zhao G. Multiple Hydrogen-Bonding Catalysts Enhance the Asymmetric Cyanation of Ketimines and Aldimines. Chemistry 2023; 29:e202302061. [PMID: 37463871 DOI: 10.1002/chem.202302061] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/18/2023] [Accepted: 07/18/2023] [Indexed: 07/20/2023]
Abstract
A highly enantioselective cyanation of imines (up to >99 % ee) has been developed using well-designed C2 -symmetric hydrogen bonding catalysts. The catalytic strategy was characterized with low catalyst loading (0.1-1 mol %), easily accessible catalysts with diverse functional groups, and catalytic base additives. A wide range of imines, including the challenging N-Boc and N-Cbz protected ketimines and aldimines, as well as fluoroalkylated ketimines, were investigated under mild conditions to afford the products with good to excellent yields (up to 99 % yield) and high enantioselectivity (up to >99 % ee). Control experiments revealed that the multiple hydrogen bonding catalysts enhanced the reactivity and enantioselectivity of the Strecker reaction initiated by the base.
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Affiliation(s)
- Yunhui Zhao
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P. R. China
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecular, Ministry of Education, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P. R. China
| | - Yueyang Luo
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P. R. China
| | - Jun Liu
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Changwu Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, P. R. China
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
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6
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Wang X, Ji Z, Liu J, Wang B, Jin H, Zhang L. Advances in Organocatalytic Asymmetric Reactions Involving Thioesters. ACTA CHIMICA SINICA 2023. [DOI: 10.6023/a22100422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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7
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Mo Y, Chen Q, Li J, Ye D, Zhou Y, Dong S, Liu X, Feng X. Asymmetric Catalytic Conjugate Addition of Cyanide to Chromones and β-Substituted Cyclohexenones. ACS Catal 2022. [DOI: 10.1021/acscatal.2c05509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yuhao Mo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Qiyou Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Jinzhao Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Dong Ye
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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8
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Light-induced phosphine-catalyzed asymmetric functionalization of benzylic C-H bonds. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1406-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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9
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Tao LF, Zhang S, Huang F, Wang WT, Luo ZH, Qian L, Liao JY. Diastereo- and Enantioselective Silver-Catalyzed [3+3] Cycloaddition and Kinetic Resolution of Azomethine Imines with Activated Isocyanides. Angew Chem Int Ed Engl 2022; 61:e202202679. [PMID: 35289973 DOI: 10.1002/anie.202202679] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 12/15/2022]
Abstract
In contrast to the well-established [3+2] cycloaddition reactions, the catalytic enantioselective [3+n] (n≥3) cycloaddition reaction of activated isocyanides for the preparation of six-membered or larger ring systems has remained underdeveloped. Herein, we report the first example of highly diastereo- and enantioselective [3+3] cycloaddition of activated isocyanides with azomethine imines. By employing silver catalysis, a wide range of biologically important bicyclic 1,2,4-triazines were obtained in high yields (up to 99 %) with good to excellent stereoselectivities (up to >20 : 1 dr, 99 % ee). In addition, the same catalytic system could be applied to both the late-stage functionalization of complex bioactive molecules and the kinetic resolution of racemic azomethine imines, further highlighting its versatility and synthetic utility.
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Affiliation(s)
- Ling-Fei Tao
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Sen Zhang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Fen Huang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Wen-Tao Wang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Zhang-Hong Luo
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Linghui Qian
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Jia-Yu Liao
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China.,Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou, 310018, China
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10
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Tao L, Zhang S, Huang F, Wang W, Luo Z, Qian L, Liao J. Diastereo‐ and Enantioselective Silver‐Catalyzed [3+3] Cycloaddition and Kinetic Resolution of Azomethine Imines with Activated Isocyanides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202679] [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)
- Ling‐Fei Tao
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Sen Zhang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Fen Huang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Wen‐Tao Wang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Zhang‐Hong Luo
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Linghui Qian
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Jia‐Yu Liao
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University Hangzhou 310018 China
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11
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Kumar S, Vaishanv NK, Mohanan K. Efficient Construction of 3‐Fluoroalkylated Oxindoles Enabled by Zwitterion Catalysis. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200084] [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)
- Sandeep Kumar
- Central Drug Research Institute Medicinal and Process Chemistry Division Lucknow INDIA
| | | | - Kishor Mohanan
- CSIR-Central Drug Research Institute Medicinal and Process Chemistry Sector-10Jankipuram ExtensionSitapur Road 226031 Lucknow INDIA
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12
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Tan JP, Chen Y, Ren X, Guo Y, Yi B, Zhang H, Gao G, Wang T. In situ phosphonium-containing Lewis base-catalyzed 1,6-cyanation reaction: a facile way to obtain α-diaryl and α-triaryl acetonitriles. Org Chem Front 2022. [DOI: 10.1039/d1qo01501j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A in situ phosphonium-containing catalyst and its successful application in promoting remote 1,6-cyanation reaction of p-QMs and fuchsones have been disclosed, providing a facile and direct access to both α-diaryl and α-triaryl acetonitriles.
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Affiliation(s)
- Jian-Ping Tan
- Hunan Province Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, 411104, P. R. China
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Yuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Xiaoyu Ren
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Yumeng Guo
- Hunan Province Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, 411104, P. R. China
| | - Bing Yi
- Hunan Province Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, 411104, P. R. China
| | - Hongkui Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Guowei Gao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road, Chengdu 610064, P. R. China
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13
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Liu H, Shen C, Chang X, Wang C. Recent Advances in Catalytic Asymmetric 1,3-Dipolar Cycloaddition Reactions with Kinetic Resolution. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202205037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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14
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Ohmatsu K, Morita Y, Kiyokawa M, Hoshino K, Ooi T. Catalytic Asymmetric Strecker Reaction of Ketoimines with Potassium Cyanide. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kohsuke Ohmatsu
- Institute of Transformative Bio-Molecules (WPI-ITbM) Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8601 Japan
| | - Yusuke Morita
- Institute of Transformative Bio-Molecules (WPI-ITbM) Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8601 Japan
| | - Mari Kiyokawa
- Institute of Transformative Bio-Molecules (WPI-ITbM) Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8601 Japan
| | - Kimihiro Hoshino
- Institute of Transformative Bio-Molecules (WPI-ITbM) Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8601 Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Nagoya 464-8601 Japan
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15
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Xu PW, Cui XY, Chen C, Zhou F, Yu JS, Ao YF, Zhou J. Enantioselective Synthesis of C α-Tetrasubstituted N-Hydroxyl-α-amino Nitriles via Cyanation of Ketonitrones Using Me 2(CH 2Cl)SiCN. Org Lett 2021; 23:8471-8476. [PMID: 34644098 DOI: 10.1021/acs.orglett.1c03176] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Here, we report an unprecedented catalytic enantioselective cyanation of ketonitrones enabled by the bifunctional cyanating reagent Me2(CH2Cl)SiCN. This approach allows facile access to optically active N-hydroxyl-α-amino nitriles that are of high synthetic value but difficult to acquire by other methods. The use of bifunctional cyanating reagent Me2(CH2Cl)SiCN not only achieves an enantioselectivity higher than that with TMSCN but also enables various diversification reactions of the resulting silylated adducts. This represents the first enantioselective catalytic nucleophilic addition reaction of unactivated ketone-derived nitrones, exhibiting the potential of such tetrasubstituted C═N bonds for asymmetric synthesis of N-hydroxy α-amino acids and other N-hydroxy tertiary amines.
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Affiliation(s)
- Peng-Wei Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Process and Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Xiao-Yuan Cui
- Shanghai Key Laboratory of Green Chemistry and Chemical Process and Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Chen Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Process and Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Feng Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Process and Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Jin-Sheng Yu
- Shanghai Key Laboratory of Green Chemistry and Chemical Process and Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Yu-Fei Ao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jian Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Process and Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China.,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou 571158, China
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16
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Kadota T, Sawa M, Kondo Y, Morimoto H, Ohshima T. Catalytic Enantioselective Strecker Reaction of Isatin-Derived N-Unsubstituted Ketimines. Org Lett 2021; 23:4553-4558. [PMID: 34029103 DOI: 10.1021/acs.orglett.1c01194] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A catalytic enantioselective Strecker reaction of isatin-derived N-unsubstituted ketimines directly afforded the N-unprotected α-aminonitriles with a tetrasubstituted carbon stereocenter in up to 99% ee without requiring protection/deprotection steps. One-pot Strecker reactions from the parent carbonyl compounds were also realized with comparable yields and enantioselectivities. Direct transformations of the N-unprotected α-aminonitrile products streamlined the synthesis of unnatural amino acid derivatives and achieved the shortest one-pot stereoselective routes to a biologically active compound reported to date.
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Affiliation(s)
- Tetsuya Kadota
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi 3-1-1 Higashi-ku, Fukuoka 812-8582, Japan
| | - Masanao Sawa
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi 3-1-1 Higashi-ku, Fukuoka 812-8582, Japan
| | - Yuta Kondo
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi 3-1-1 Higashi-ku, Fukuoka 812-8582, Japan
| | - Hiroyuki Morimoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi 3-1-1 Higashi-ku, Fukuoka 812-8582, Japan
| | - Takashi Ohshima
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi 3-1-1 Higashi-ku, Fukuoka 812-8582, Japan
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17
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Xie C, Smaligo AJ, Song XR, Kwon O. Phosphorus-Based Catalysis. ACS CENTRAL SCIENCE 2021; 7:536-558. [PMID: 34056085 PMCID: PMC8155461 DOI: 10.1021/acscentsci.0c01493] [Citation(s) in RCA: 129] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Indexed: 05/08/2023]
Abstract
Phosphorus-based organocatalysis encompasses several subfields that have undergone rapid growth in recent years. This Outlook gives an overview of its various aspects. In particular, we highlight key advances in three topics: nucleophilic phosphine catalysis, organophosphorus catalysis to bypass phosphine oxide waste, and organophosphorus compound-mediated single electron transfer processes. We briefly summarize five additional topics: chiral phosphoric acid catalysis, phosphine oxide Lewis base catalysis, iminophosphorane super base catalysis, phosphonium salt phase transfer catalysis, and frustrated Lewis pair catalysis. Although it is not catalytic in nature, we also discuss novel discoveries that are emerging in phosphorus(V) ligand coupling. We conclude with some ideas about the future of organophosphorus catalysis.
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Affiliation(s)
- Changmin Xie
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | - Andrew J. Smaligo
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | | | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
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18
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Organophosphine bearing multiple hydrogen-bond donors for asymmetric Michael addition reaction of 1-oxoindane-2-carboxylic acid ester via dual-reagent catalysis. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.07.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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19
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Pimparkar S, Koodan A, Maiti S, Ahmed NS, Mostafa MMM, Maiti D. C–CN bond formation: an overview of diverse strategies. Chem Commun (Camb) 2021; 57:2210-2232. [DOI: 10.1039/d0cc07783f] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Aim for cyanation: a comprehensive overview on various approaches on C–CN bond formation in arenes/heteroarenes by activated halides/pseudohalide, directed, non-directed, electro-catalyzed, photoredox-catalyzed, and radical approaches.
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Affiliation(s)
| | | | | | - Nesreen S. Ahmed
- Department of Therapeutic Chemistry
- National Research Centre
- Cairo-12622
- Egypt
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20
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Xu H, Nazli A, Zou C, Wang ZP, He Y. Bench-stable imine surrogates for the one-pot and catalytic asymmetric synthesis of α-amino esters/ketones. Chem Commun (Camb) 2020; 56:14243-14246. [PMID: 33118565 DOI: 10.1039/d0cc06055k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N,O-Bis(tert-butoxycarbonyl)hydroxylamines are readily accessible as imine surrogates, which are bench stable and could quantitatively generate the corresponding imines for in situ applications. An unpresented catalytic asymmetric method for the synthesis of α-amino esters and ketones from novel imine surrogates, N,O-bis(tert-butoxycarbonyl)hydroxylamines, as well as its preliminary mechanistic studies are reported. A variety of optically enriched products were obtained in excellent yields and enantioselectivities (up to 99% yield and >99% ee).
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Affiliation(s)
- Huacheng Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P. R. China.
| | - Adila Nazli
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P. R. China.
| | - Cheng Zou
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P. R. China.
| | - Zhi-Peng Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, P. R. China.
| | - Yun He
- 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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21
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Eosin Y-Catalyzed Visible-Light-Mediated Aerobic Transformation of Pyrazolidine-3-One Derivatives. Catalysts 2020. [DOI: 10.3390/catal10090981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
By utilizing an underexplored reactivity of N1-substituted pyrazolidine-3-ones, we developed a visible-light-induced aerobic oxidation of N1-substituted pyrazolidine-3-one derivatives yielding the corresponding azomethine imines. The resulting azomethine imines can be further reacted with ynones in situ under copper catalyzed [3 + 2] cycloaddition reaction conditions yielding the corresponding pyrazolo[1,2-a]pyrazoles in good yields. The methodology can be extended to other 1-aryl-substituted pyrazolidinones which undergo endocyclic oxidation deriving the corresponding pyrazolones as single products.
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22
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Wang H, Li X, Tu Y, Zhang J. Catalytic Enantiodivergent Michael Addition by Subtle Adjustment of Achiral Amino Moiety of Dipeptide Phosphines. iScience 2020; 23:101138. [PMID: 32450512 PMCID: PMC7251764 DOI: 10.1016/j.isci.2020.101138] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/03/2020] [Accepted: 05/01/2020] [Indexed: 11/29/2022] Open
Abstract
Over the past decades, asymmetric catalysis has been intensely investigated as a powerful tool for the preparation of numerous chiral biologically active compounds. However, developing general and practical strategies for preparation of both enantiomers of a chiral molecule via asymmetric catalysis is still a challenge, particularly when the two enantiomers of a chiral catalyst are not easily prepared from natural chiral sources. Inspired by the biologic system, we report herein an unprecedented catalytic enantiodivergent Michael addition of pyridazinones to enones by subtle adjustment of achiral amino moiety of dipeptide phosphine catalysts. These two dipeptide phosphine catalysts, P5 and P8, could deliver both enantiomers of a series of N2-alkylpyridazinones in good yields (up to 99%) with high enantioselectivities (up to 99% ee) via the catalyst-controlled enantiodivergent addition of pyridazinones to enones.
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Affiliation(s)
- Huamin Wang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China; 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, P. R. China
| | - Xiuzheng Li
- School of Pharmacy, Anhui Medical University, 81 N. Meishan Road, Hefei 230032, P. R.China
| | - Youshao Tu
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, 2055 N. Yan'an Avenue, Changchun 130012, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China; 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, P. R. China.
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23
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Affiliation(s)
- Wen-Biao Wu
- 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, Shanghai 200062, People’s Republic of China
| | - Jin-Sheng Yu
- 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, Shanghai 200062, People’s Republic of China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou 571158, People’s Republic of 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, Shanghai 200062, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, People’s Republic of China
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24
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Wang M, Zhou M, Zhang L, Zhang Z, Zhang W. A step-economic and one-pot access to chiral C α-tetrasubstituted α-amino acid derivatives via a bicyclic imidazole-catalyzed direct enantioselective C-acylation. Chem Sci 2020; 11:4801-4807. [PMID: 34122937 PMCID: PMC8159231 DOI: 10.1039/d0sc00808g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Cα-Tetrasubstituted α-amino acids are ubiquitous and unique structural units in bioactive natural products and pharmaceutical compounds. The asymmetric synthesis of these molecules has attracted a lot of attention, but a more efficient method is still greatly desired. Here we describe the first sequential four-step acylation reaction for the efficient synthesis of chiral Cα-tetrasubstituted α-amino acid derivatives from simple N-acylated amino acids via an auto-tandem catalysis using a single nucleophilic catalyst. The synthetic efficiency is improved via a direct enantioselective C-acylation; the methodology affords the corresponding Cα-tetrasubstituted α-amino acid derivatives with excellent enantioselectivities (up to 99% ee). This step-economic, one-pot, and auto-tandem strategy provides facile access to important chiral building blocks, such as peptides, serines, and oxazolines, which are often used in medicinal and synthetic chemistry. The first four-step sequential reaction for the synthesis of Cα-tetrasubstituted chiral α-amino acid derivatives via auto-tandem catalysis has been developed.![]()
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Affiliation(s)
- Mo Wang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University Shanghai 200240 China .,School of Pharmacy, Shanghai Jiao Tong University Shanghai 200240 China
| | - Muxing Zhou
- School of Pharmacy, Shanghai Jiao Tong University Shanghai 200240 China
| | - Lu Zhang
- School of Pharmacy, Shanghai Jiao Tong University Shanghai 200240 China
| | - Zhenfeng Zhang
- School of Pharmacy, Shanghai Jiao Tong University Shanghai 200240 China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University Shanghai 200240 China .,School of Pharmacy, Shanghai Jiao Tong University Shanghai 200240 China
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25
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Zhang H, Jiang C, Tan JP, Hu HL, Chen Y, Ren X, Zhang HS, Wang T. Highly Enantioselective Construction of Fully Substituted Stereocenters Enabled by In Situ Phosphonium-Containing Organocatalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01079] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hongkui Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Chunhui Jiang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, 2 Mengxi Road, Zhenjiang 212003, P. R. China
| | - Jian-Ping Tan
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Hui-Lin Hu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Yayun Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, 2 Mengxi Road, Zhenjiang 212003, P. R. China
| | - Xiaoyu Ren
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Hong-Su Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
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26
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Du M, Yu L, Du T, Li Z, Luo Y, Meng X, Tian Z, Zheng C, Cao W, Zhao G. N-Protecting group tuning of the enantioselectivity in Strecker reactions of trifluoromethyl ketimines to synthesize quaternary α-trifluoromethyl amino nitriles by ion pair catalysis. Chem Commun (Camb) 2020; 56:1581-1584. [PMID: 31934692 DOI: 10.1039/c9cc09151c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective Strecker reaction to construct trifluoromethylated quaternary stereocenters with N-PMP and unexplored N-Boc trifluoromethyl ketimines catalyzed using an organophosphine dual-reagent catalyst has been developed. The enantioselectivities of the corresponding products with the same catalyst could be switched by using different N-protecting groups (N-PMP or N-Boc). The trifluoromethyl amino nitriles were obtained in high yield and high enantioselectivity in a short time and could be easily converted to a variety of useful trifluoromethyl-containing compounds.
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Affiliation(s)
- Mengyuan Du
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. China.
| | - Longhui Yu
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.
| | - Ting Du
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.
| | - Zhaokun Li
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.
| | - Yueyang Luo
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.
| | - Xiangyu Meng
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.
| | - Zhengtao Tian
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.
| | - Changwu Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Weiguo Cao
- Department of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, P. R. China.
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.
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27
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Zhou T, Ji X, Zhang J, Liu L. Phosphine-catalyzed conjugate cyanation of β-trifluoromethyl enones: access to α-trifluoromethyl γ-carbonyl nitriles. Org Chem Front 2020. [DOI: 10.1039/d0qo00582g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Herein, we developed an efficient conjugate cyanation of β-trifluoromethyl enones with TMSCN mediated by phosphine and methyl acrylate.
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Affiliation(s)
- Tao Zhou
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
| | - Xin Ji
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
| | - Junliang Zhang
- Department of Chemistry
- Fudan University
- Shanghai 200438
- P. R. China
| | - Lu Liu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development
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28
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Wang C, Chen Y, Li J, Zhou L, Wang B, Xiao Y, Guo H. Phosphine-Catalyzed Asymmetric Cycloaddition Reaction of Diazenes: Enantioselective Synthesis of Chiral Dihydropyrazoles. Org Lett 2019; 21:7519-7523. [DOI: 10.1021/acs.orglett.9b02800] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Chang Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yuehua Chen
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Jingyu Li
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Leijie Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Bo Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
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29
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Hatano M, Nishio K, Mochizuki T, Nishikawa K, Ishihara K. Highly Active Chiral Dilithium(I) Binaphthyldisulfonate Catalysts for Enantio- and Chemoselective Strecker-Type Reactions. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02739] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Manabu Hatano
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Kosuke Nishio
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Takuya Mochizuki
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Keisuke Nishikawa
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
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30
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Lam YP, Wang X, Tan F, Ng WH, Tse YLS, Yeung YY. Amide/Iminium Zwitterionic Catalysts for (Trans)esterification: Application in Biodiesel Synthesis. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01959] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ying-Pong Lam
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Xinyan Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Fei Tan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Wing-Hin Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Ying-Lung Steve Tse
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Ying-Yeung Yeung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
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31
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Li Z, Frings M, Yu H, Bolm C. Organocatalytic Synthesis of Sulfoximidoyl-Containing Carbamates from Sulfoximines and Morita–Baylis–Hillman Carbonates. Org Lett 2019; 21:3119-3122. [DOI: 10.1021/acs.orglett.9b00772] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhen Li
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Marcus Frings
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Hao Yu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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32
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Pan L, Zheng C, Fang G, Hong H, Liu J, Yu L, Zhao G. Asymmetric Total Synthesis of Vincadifformine Enabled by a Thiourea‐Phosphonium Salt Catalyzed Mannich‐Type Reaction. Chemistry 2019; 25:6306-6310. [DOI: 10.1002/chem.201900896] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/28/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Lu Pan
- Key Laboratory of Synthetic Chemistry of Natural SubstancesShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Chang‐Wu Zheng
- Key Laboratory of Synthetic Chemistry of Natural SubstancesShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Guo‐Sheng Fang
- Key Laboratory of Synthetic Chemistry of Natural SubstancesShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Hao‐Ran Hong
- Key Laboratory of Synthetic Chemistry of Natural SubstancesShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Jun Liu
- Key Laboratory of Synthetic Chemistry of Natural SubstancesShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Long‐Hui Yu
- Key Laboratory of Synthetic Chemistry of Natural SubstancesShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural SubstancesShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
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33
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Xia PJ, Ye ZP, Song D, Ren JW, Wu HW, Xiao JA, Xiang HY, Chen XQ, Yang H. Photocatalytic reductive radical-radical coupling of N,N'-cyclicazomethine imines with difluorobromo derivatives. Chem Commun (Camb) 2019; 55:2712-2715. [PMID: 30758023 DOI: 10.1039/c8cc09385g] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A visible-light-induced difluoroalkylation of N,N'-cyclicazomethine imine was successfully realized through a novel photoredox radical-radical cross-coupling reaction. This developed protocol exhibits high functional group tolerance and affords a variety of difluorinated 3-pyrazolidinone scaffolds. Extensive mechanistic investigations have been undertaken, well revealing the involvement of a reductive radical-radical coupling pathway.
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Affiliation(s)
- Peng-Ju Xia
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
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34
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Wang K, Xiang Y, Shi Z, Wang H, Li N, Tang B. Asymmetric kinetic resolution of sulfides for the construction of unsymmetric sulfides and chiral 3,3-disubstituted oxindoles. Org Biomol Chem 2019; 17:6351-6354. [DOI: 10.1039/c9ob01065c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for preparing unsymmetric disulfides using para-quinone methides derived from isatins was developed. In addition, chiral 3,3-disubstituted oxindoles were also obtained with high selectivities via asymmetric kinetic resolution.
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Affiliation(s)
- Kaiye Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Institute of Molecular and Nano Science
| | - Yanan Xiang
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Institute of Molecular and Nano Science
| | - Zhujun Shi
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Institute of Molecular and Nano Science
| | - Hongyu Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Institute of Molecular and Nano Science
| | - Na Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Institute of Molecular and Nano Science
| | - Bo Tang
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Institute of Molecular and Nano Science
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35
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Xu D, Wei H, Zhen Y, Gao YQ, Li R, Li X, He Y, Zhang Z, Xie W. Carboxylate phosphabetaine as a bifunctional organocatalyst for the intramolecular ring opening of oxetane. Org Chem Front 2019. [DOI: 10.1039/c9qo00304e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Carboxylate phosphabetaine acts as a competent organocatalyst for promoting the intramolecular ring opening of oxetanes.
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Affiliation(s)
- Dongyang Xu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Hongbo Wei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Yanxia Zhen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Yu-Qi Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Ruoxin Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Xingzhou Li
- Laboratory of Computer-Aided Drug Design & Discovery
- Beijing Institute of Pharmacology and Toxicology
- Beijing 100850
- P.R. China
| | - Yupeng He
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Zhong Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
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36
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Wang H, Zhang L, Tu Y, Xiang R, Guo YL, Zhang J. Phosphine-Catalyzed Difunctionalization of β-Fluoroalkyl α,β-Enones: A Direct Approach to β-Amino α-Diazo Carbonyl Compounds. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Huamin Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P. R. China
| | - Li Zhang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P. R. China
| | - Youshao Tu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P. R. China
| | - Ruiqi Xiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P. R. China
| | - Yin-Long Guo
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P. R. China
| | - Junliang Zhang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P. R. China
- Department of Chemistry; Fudan University; 2005 Songhu Road Shanghai 200438 P. R. China
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37
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Wang H, Zhang L, Tu Y, Xiang R, Guo YL, Zhang J. Phosphine-Catalyzed Difunctionalization of β-Fluoroalkyl α,β-Enones: A Direct Approach to β-Amino α-Diazo Carbonyl Compounds. Angew Chem Int Ed Engl 2018; 57:15787-15791. [PMID: 30294948 DOI: 10.1002/anie.201810253] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 09/22/2018] [Indexed: 01/10/2023]
Abstract
An efficient and practical phosphine-catalyzed vicinal difunctionalization of β-fluoroalkyl α,β-enones with TMSN3 has been developed. Using dppb as the catalyst, the reaction worked efficiently to yield various β-amino α-diazocarbonyl compounds in high yields (up to 94 %). This work marks the first efficient construction of α-diazocarbonyl compounds by phosphine catalysis. Meanwhile, the asymmetric variant induced by the nucleophilic bifunctional phosphine P4 led to various chiral fluoroalkylated β-amino α-diazocarbonyl compounds in high yields and enantioselectivity. NMR and ESI-MS studies support the existence of the key reaction intermediates. In contrast, β-azide carbonyl compounds would be furnished in good yields from β-fluoroalkylated β,β-disubstituted enones.
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Affiliation(s)
- Huamin Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P. R. China
| | - Li Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, P. R. China
| | - Youshao Tu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P. R. China
| | - Ruiqi Xiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P. R. China
| | - Yin-Long Guo
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, P. R. China
| | - Junliang Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, P. R. China.,Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
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38
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Sultan S, Shah BA. Carbon‐Carbon and Carbon‐Heteroatom Bond Formation Reactions Using Unsaturated Carbon Compounds. CHEM REC 2018; 19:644-660. [DOI: 10.1002/tcr.201800095] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/12/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Shaista Sultan
- Natural Product Chemistry Division and AcSIRCSIR-Indian Institute of Integrative Medicine Jammu- 180001
| | - Bhahwal Ali Shah
- Natural Product Chemistry Division and AcSIRCSIR-Indian Institute of Integrative Medicine Jammu- 180001
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39
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Affiliation(s)
- Huanzhen Ni
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore
| | - Wai-Lun Chan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore
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40
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Yoshida Y, Moriya Y, Mino T, Sakamoto M. Regio‐ and Enantioselective Synthesis of α‐Amino‐δ‐Ketoesters Through Catalytic Umpolung Reaction of α‐Iminoesters with Enones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800791] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yasushi Yoshida
- Molecular Chirality Research Center, Graduate School of EngineeringChiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi Chiba 263-8522 Japan Phone/Fax: (+81)43-290-3386
| | - Yuta Moriya
- Molecular Chirality Research Center, Graduate School of EngineeringChiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi Chiba 263-8522 Japan Phone/Fax: (+81)43-290-3386
| | - Takashi Mino
- Molecular Chirality Research Center, Graduate School of EngineeringChiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi Chiba 263-8522 Japan Phone/Fax: (+81)43-290-3386
| | - Masami Sakamoto
- Molecular Chirality Research Center, Graduate School of EngineeringChiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi Chiba 263-8522 Japan Phone/Fax: (+81)43-290-3386
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41
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42
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Yu QW, Wu LP, Kang TC, Xie J, Sha F, Wu XY. Enantioselective Cyanosilylation of α,α-Dialkoxy Ketones by Using Phosphine-Thiourea Dual-Reagent Catalysis. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800459] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qi-Wen Yu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 200237 Shanghai P. R. China
| | - Lu-Ping Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 200237 Shanghai P. R. China
| | - Tian-Chen Kang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 200237 Shanghai P. R. China
| | - Jin Xie
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 200237 Shanghai P. R. China
| | - Feng Sha
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 200237 Shanghai P. R. China
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 200237 Shanghai P. R. China
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43
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Jin Q, Zheng C, Zhao G, Zou G. Enantioselective direct Mannich reactions of 3-substituted oxindoles catalyzed by chiral phosphine via dual-reagent catalysis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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44
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Mohammadi Ziarani G, Moradi R, Lashgari N. Asymmetric synthesis of chiral oxindoles using isatin as starting material. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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45
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Kaur J, Chimni SS. Catalytic synthesis of 3-aminooxindoles via addition to isatin imine: an update. Org Biomol Chem 2018; 16:3328-3347. [DOI: 10.1039/c7ob03002a] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
3-Substituted-3-aminooxindoles have attracted the attention of organic chemist to develop different synthetic methodologies for their synthesis using catalysts. This review covers the recent developments.
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Affiliation(s)
- Jasneet Kaur
- Department of Chemistry
- U.G.C. Centre of Advance Study-II
- Guru Nanak Dev University
- Amritsar
- India
| | - Swapandeep Singh Chimni
- Department of Chemistry
- U.G.C. Centre of Advance Study-II
- Guru Nanak Dev University
- Amritsar
- India
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46
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Azizi N, Farhadi E. Magnetically separable g‐C
3
N
4
hybrid nanocomposite: Highly efficient and eco‐friendly recyclable catalyst for one‐pot synthesis of α‐aminonitriles. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4188] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Najmedin Azizi
- Chemistry and Chemical Engineering Research Center of Iran PO Box 14335‐186 Tehran Iran
| | - Elham Farhadi
- Chemistry and Chemical Engineering Research Center of Iran PO Box 14335‐186 Tehran Iran
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47
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Ansari A, Gupta N, Jakhar A, Khan NUH, Kureshy RI. Quinine Thiourea Immobilized on SBA-15 as an Efficient Recyclable Catalyst for Asymmetric Strecker Reaction of Isatin N
-protected Ketimines. ChemistrySelect 2017. [DOI: 10.1002/slct.201702850] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amamudin Ansari
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
| | - Naveen Gupta
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
| | - Ajay Jakhar
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
| | - Noor-ul H. Khan
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
| | - Rukhsana I. Kureshy
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg; Bhavnagar- 364 002 Gujarat India
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48
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Yu C, Shen S, Jiang L, Li J, Lu Y, Li T, Yao C. NHC-catalyzed regiodivergent syntheses of difunctionalized 3-pyrazolidinones from α-bromoenal and monosubstituted hydrazine. Org Biomol Chem 2017; 15:9149-9155. [PMID: 29058746 DOI: 10.1039/c7ob02041d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A formal [3 + 2] annulation of α-bromoenal with monosubstituted hydrazine could give 1,5 or 2,5-difunctionalized 3-pyrazolidinone regiodivergently by tuning the structure of the N-Heterocyclic Carbene (NHC) catalyst. Moderate to high yields, mild reaction conditions, good regioselectivity and potential biological significance of the final product have made this protocol attractive for the assembly of 3-pyrazolidinone.
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Affiliation(s)
- Chenxia Yu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, P. R. China.
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49
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He Q, Du W, Chen YC. Asymmetric [3+2] Annulations to Construct 1,2-Bispirooxindoles Incorporating a Dihydropyrrolidine Motif. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700849] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Qing He
- Department of Medicinal Chemistry, West China School of Pharmacy; Sichuan University; Chengdu 610041 People's Republic of China
| | - Wei Du
- Department of Medicinal Chemistry, West China School of Pharmacy; Sichuan University; Chengdu 610041 People's Republic of China
| | - Ying-Chun Chen
- Department of Medicinal Chemistry, West China School of Pharmacy; Sichuan University; Chengdu 610041 People's Republic of China
- College of Pharmacy; Third Military Medical University; Chongqing 400038 People's Republic of China
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50
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Ji X, Cao WG, Zhao G. Dual-reagent organophosphine catalyzed asymmetric Mannich reactions of isocyanoacetates with N -Boc-aldimines. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.08.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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