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Liu K, Li F, Wang J, Zhang Z, Du F, Su H, Wang Y, Yuan Q, Li F, Wang T. Silver-catalyzed cyclization of α-imino-oxy acids to fused tetralone derivatives. Org Biomol Chem 2023; 21:2700-2704. [PMID: 36912118 DOI: 10.1039/d2ob02329f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
A silver-catalyzed intramolecular radical relay cyclization of α-imino-oxy acids under mild conditions has been described. This reaction offers facile access to a diverse range of fused tetralone derivatives with exquisite stereoselectivity in moderate to good yields (40-98%). Experimental studies show that the reaction undergoes a decarboxylation and acetone fragmentation/1,5-hydrogen atom transfer (HAT)/cyclization process.
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Affiliation(s)
- Kai Liu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China.
| | - Feng Li
- College of Food Science and Pharmaceutical Engineering, Zaozhuang University, Zaozhuang 277160, China. .,College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Jingjing Wang
- College of Food Science and Pharmaceutical Engineering, Zaozhuang University, Zaozhuang 277160, China. .,College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Zhaowei Zhang
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Fengge Du
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Hanxiao Su
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Yonghong Wang
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Qingqing Yuan
- College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Fei Li
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China.
| | - Teng Wang
- School of Chemistry, Beihang University, Beijing, 100191, China.
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Wang X, Shi A, Huang XQ, Chen X, Li T, Qu L, Yu B. Visible-light-induced cyclization of cyclic N-sulfonyl ketimines to N-sulfonamide fused imidazolidines. Org Biomol Chem 2022; 20:3798-3802. [PMID: 35445233 DOI: 10.1039/d2ob00460g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible-light-induced metal-free cascade cyclization of cyclic N-sulfonyl ketimines with N-arylglycines for the construction of N-sulfonamide-fused imidazolidines was developed. The procedure employed 3 mol% of eosin Y as the photocatalyst at room temperature under visible light irradiation, providing various N-sulfonamide-fused imidazolidines in good yields (32 examples, up to 86% yields).
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Affiliation(s)
- Xiaotong Wang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Anzai Shi
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Xian-Qiang Huang
- School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xiaolan Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Tiesheng Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Lingbo Qu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Bing Yu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
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Catalyst-free Direct Ring-opening of Cyclic Aldimines with Aliphatic Primary Amines to Construct o-Hydroxy Schiff Bases. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Shi A, Sun K, Chen X, Qu L, Zhao Y, Yu B. Perovskite as Recyclable Photocatalyst for Annulation Reaction of N-Sulfonyl Ketimines. Org Lett 2021; 24:299-303. [PMID: 34914402 DOI: 10.1021/acs.orglett.1c03960] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A sustainable and cost-effective manner for the photocatalytic annulation reaction of N-sulfonyl ketimines with N-arylglycines to synthesize imidazolidine-fused sulfamidates (31 examples) by employing CsPbBr3 as a heterogeneous photocatalyst has been developed. The catalyst CsPbBr3 can be simply recovered from the reaction mixture and reused at least five times without an obvious reduction in its photocatalytic reactivity, exhibiting a high catalyst economic feature.
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Affiliation(s)
- Anzai Shi
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Kai Sun
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Xiaolan Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Lingbo Qu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Yufen Zhao
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Kexue Road No. 100, Zhengzhou 450001, China
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