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Wang Z, Tian G, Shi Y, Liu W, Xu X, Li X, Wu L, Xie L. Lewis base-catalyzed cascade [4 + 2]-annulation reaction of N-alkoxy acrylamides and acyl isothiocyanates: facile access to 2-imino-1,3-thiazinone derivatives. Org Biomol Chem 2023; 21:9200-9209. [PMID: 37960944 DOI: 10.1039/d3ob01440a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
A formal [4 + 2]-cycloaddition reaction of N-alkoxy acrylamides and acyl isothiocyanates was developed via a Lewis base-catalyzed cascade aza-nucleophilic addition/thio-Michael addition process under mild conditions. This study provides a facile approach for preparing 2-imino-1,3-thiazinone derivatives in moderate to excellent yields and enriches the field of heterocyclic acrylamide chemistry. The reported method features metal-free reaction conditions, high atom economy, and easy operation. Moreover, the reaction was successfully scaled up and derivatization reactions were successfully performed.
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Affiliation(s)
- Zhaoxue Wang
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Ge Tian
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Yuying Shi
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Wanxing Liu
- The Non-Public Enterprise Service Center of Liaocheng, Liaocheng 252000, Shandong, P. R. China
| | - Xiangdong Xu
- Liaocheng Inspection and Testing Center, Liaocheng 252000, Shandong, P. R. China
| | - Xiaojing Li
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Lingang Wu
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Lei Xie
- School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma lucidum, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
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Zhang MC, Wang DC, Qu GR, Guo HM. Catalytic Asymmetric Synthesis of Chiral Thiohydantoins via Domino Cyclization Reaction of β,γ-Unsaturated α-Ketoester and N,N'-Dialkylthiourea. Org Chem Front 2022. [DOI: 10.1039/d2qo00669c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first catalytic asymmetric route to synthesize chiral thiohydantoins containing a quaternary stereogenic center has been established utilizing a chiral phosphoric acid-catalyzed domino cyclization reaction of N,N'-dialkyl thioureas with β,γ-unsaturated...
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Yoshida Y, Omori K, Hiroshige T, Mino T, Sakamoto M. Chemoselective Catalytic Asymmetric Synthesis of Functionalized Aminals Through the Umpolung Organocascade Reaction of α‐Imino Amides. Chem Asian J 2019; 14:2737-2743. [DOI: 10.1002/asia.201900764] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Yasushi Yoshida
- Molecular Chirality Research CenterGraduate School of Science and EngineeringChiba University 1–33, Yayoi-cho Inage-ku, Chiba-shi Chiba 263-8522 Japan
| | - Kazuki Omori
- Molecular Chirality Research CenterGraduate School of Science and EngineeringChiba University 1–33, Yayoi-cho Inage-ku, Chiba-shi Chiba 263-8522 Japan
| | - Tomohiko Hiroshige
- Molecular Chirality Research CenterGraduate School of Science and EngineeringChiba University 1–33, Yayoi-cho Inage-ku, Chiba-shi Chiba 263-8522 Japan
| | - Takashi Mino
- Molecular Chirality Research CenterGraduate School of Science and EngineeringChiba University 1–33, Yayoi-cho Inage-ku, Chiba-shi Chiba 263-8522 Japan
| | - Masami Sakamoto
- Molecular Chirality Research CenterGraduate School of Science and EngineeringChiba University 1–33, Yayoi-cho Inage-ku, Chiba-shi Chiba 263-8522 Japan
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