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Liu ZJ, Ma ZW, Chen XP, Wang CC, Liu JT, Tao JC. Chiral tertiary amine-squaramide catalyzed highly enantioselective Michael addition of cyclic diketones to β,γ-unsaturated α-keto Esters. LETT ORG CHEM 2022. [DOI: 10.2174/1570178619666220314152530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
A novel tertiary amine squaramide has successfully developed and applied to catalyze the asymmetric Michael addition between cyclic diketones and β,γ-unsaturated α-ketoesters. The catalyst system performed well with a low catalyst loading of 1 mol% under mild reaction conditions. A series of synthetically and pharmaceutically useful chiral bicyclic compounds were obtained with both high yields (up to 97%) and excellent enantioselectivities (up to 97% ee).
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Affiliation(s)
- Zhi-Jing Liu
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Zhi-Wei Ma
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Xiao-Pei Chen
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Chuan-Chuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Jun-Tao Liu
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Jing-Chao Tao
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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2
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Liu Z, Ma Z, Wang C, Ding D, Liu J, Chen X, Geng G. Enantioselective Synthesis of Coumarins Catalyzed by Chiral Squaramide. LETT ORG CHEM 2022. [DOI: 10.2174/1570178619666220309155353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
A newly chiral tertiary amine-squaramide has successfully developed and applied into the asymmetric Michael addition of 4-hydroxycoumarin to β,γ-unsaturated α-ketoesters. The catalyst system performed well with a low catalyst loading of 1 mol% under mild reaction conditions. A series of coumarin derivatives were obtained with good yields and enantioselectivities
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Affiliation(s)
- Zhijing Liu
- Henan Cereal Quality and Safety Testing Key Laboratory, Institute of Quality Standards and Testing Technology for Agro-Products, Henan Academy of Agricultural Sciences, Zhengzhou 450002, P. R. China
| | - Zhiwei Ma
- Henan Cereal Quality and Safety Testing Key Laboratory, Institute of Quality Standards and Testing Technology for Agro-Products, Henan Academy of Agricultural Sciences, Zhengzhou 450002, P. R. China
| | - Chuanchuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Degang Ding
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Juntao Liu
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Xiaopei Chen
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
| | - Guangwei Geng
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, P. R. China
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3
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Deng R, Han TJ, Gao X, Yang YF, Mei GJ. Further developments of β,γ-unsaturated α-ketoesters as versatile synthons in asymmetric catalysis. iScience 2022; 25:103913. [PMID: 35243262 PMCID: PMC8881726 DOI: 10.1016/j.isci.2022.103913] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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4
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Ma Z, Chen X, Wang C, Wang J, Tao J, Lü Q. Chiral Squaramide Catalyzed Enantioselective Michael Addition of Cyclic 1,3-Diketones to β, γ-Unsaturated α-Keto Esters. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202111030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Ma Z, Wang C, Liu X, Chen X, Tao J, Lv Q. Enantioselective synthesis of coumarins catalyzed by an isosteviol-derived tertiary amine-squaramide catalyst. Chirality 2021; 34:325-332. [PMID: 34904287 DOI: 10.1002/chir.23401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/05/2021] [Accepted: 11/24/2021] [Indexed: 11/09/2022]
Abstract
A newly tertiary amine-squaramide organocatalyst has been successfully developed and applied into the asymmetric Michael addition of 4-hydroxycoumarin to β,γ-unsaturated α-ketoesters. The catalyst system performed well with a low catalyst loading of 1 mol% under mild reaction conditions. A series of coumarin derivatives were obtained in good to high yields (up to 97%) with high enantioselectivities (up to 96% ee).
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Affiliation(s)
- Zhiwei Ma
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Chuanchuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Xiaofeng Liu
- College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Xiaopei Chen
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Jingchao Tao
- College of Chemistry, Zhengzhou University, Zhengzhou, China
| | - Quanjian Lv
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, China
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6
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Biswas A, Ghosh A, Shankhdhar R, Chatterjee I. Squaramide Catalyzed Asymmetric Synthesis of Five‐ and Six‐Membered Rings. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100181] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Anup Biswas
- Department of Chemistry Hooghly Women's College Hooghly West Bengal India
| | - Avisek Ghosh
- Department of Chemistry Indian Institute of Technology- Ropar India
| | - Rajat Shankhdhar
- Department of Chemistry Indian Institute of Technology- Ropar India
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7
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Dajek M, Pruszczyńska A, Konieczny KA, Kowalczyk R. Cinchona Squaramide‐Catalyzed Intermolecular Desymmetrization of 1,3‐Diketones Leading to Chiral 1,4‐Dihydropyridines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000455] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Maciej Dajek
- Department of ChemistryWroclaw University of Science and Technology
| | | | | | - Rafał Kowalczyk
- Department of ChemistryWroclaw University of Science and Technology
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8
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Dudognon Y, Rodriguez J, Constantieux T, Bugaut X. Organocatalytic Enantioselective Synthesis of Tetrahydropyridines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800236] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Yohan Dudognon
- CNRS, Centrale Marseille, iSm2; Aix Marseille Univ; Marseille France
| | - Jean Rodriguez
- CNRS, Centrale Marseille, iSm2; Aix Marseille Univ; Marseille France
| | | | - Xavier Bugaut
- CNRS, Centrale Marseille, iSm2; Aix Marseille Univ; Marseille France
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9
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Dajek M, Kowalczyk R, Boratyński PJ. trans-1,2-Diaminocyclohexane-based sulfonamides as effective hydrogen-bonding organocatalysts for asymmetric Michael–hemiacetalization reaction. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01199k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Simple sulfonamide organocatalysts deliver unparalleled efficiency in the asymmetric Michael–hemiacetalization cascade.
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Affiliation(s)
- Maciej Dajek
- Department of Organic Chemistry
- Wrocław University of Technology
- Wrocław
- 50-370 Poland
| | - Rafał Kowalczyk
- Department of Organic Chemistry
- Wrocław University of Technology
- Wrocław
- 50-370 Poland
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10
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Abstract
A series of Cinchona alkaloid-derived dimers were obtained in high yields in copper-catalyzed 1,3-dipolar "click" cycloaddition using bis(TMS)butadiyne and other bivalent alkynes. The products with bitriazole linkers were effective ligands for asymmetric copper-catalyzed Michael addition. It was shown that the presence of such linker was responsible for effective chirality transfer.
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Affiliation(s)
- Przemysław J Boratyński
- Department of Organic Chemistry, Wrocław University of Technology , Wyspiańskiego 27, Wrocław 50-370, Poland
| | - Rafał Kowalczyk
- Department of Organic Chemistry, Wrocław University of Technology , Wyspiańskiego 27, Wrocław 50-370, Poland
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