|
1
|
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.
Collapse
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
| |
Collapse
|
|
2
|
Xie L, Sun L, Wu P, Wang Z, Zhao C, Wu L, Li X, Gao Z, Liu W, Nie SZ. Organocatalytic cascade nucleophilic/aza-Michael addition reactions: metal-free catalytic strategy for the synthesis of hydantoins. Org Biomol Chem 2023; 21:2295-2300. [PMID: 36825465 DOI: 10.1039/d2ob01825j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Lewis base-catalyzed cascade nucleophilic/aza-Michael addition reaction of N-alkoxy β-oxo-acrylamides with isocyanates has been developed to afford various highly functionalized hydantoin derivatives in 80-98% yields under mild reaction conditions. The intriguing features of this method include metal-free reaction conditions, low catalyst loading, broad substrate scope and short reaction time.
Collapse
Affiliation(s)
- Lei Xie
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Lei Sun
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Ping Wu
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Zhaoxue Wang
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Chenyi Zhao
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Lingang Wu
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Xiaojing Li
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| | - Zhenzhen Gao
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, 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.
| | - Shao-Zhen Nie
- Address here. School of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, Shandong, P. R. China. xieleilcu.edu.cn
| |
Collapse
|
|
3
|
Wang CC, Yang YT, Wang QL, Liu XH, Chen YJ. Regioselective and stereospecific synthesis of functionalized 3,4-dihydro-2 H-1,4-thiazines by catalyst-free [3 + 3] annulation of pyridinium 1,4-zwitterionic thiolates and aziridines. Org Chem Front 2022. [DOI: 10.1039/d2qo00612j] [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
An efficient route to 3,4-dihydro-2H-1,4-thiazines was developed though [3 + 3] annulation of pyridinium 1,4-zwitterionic thiolates and aziridines under catalyst-free conditions.
Collapse
Affiliation(s)
- Chuan-Chuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China
| | - Yan-Tao Yang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Qing-Long Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China
| | - Xue-Hua Liu
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
| | - Ya-Jing Chen
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
| |
Collapse
|
|
4
|
Wang CC, Wang XL, Zhang QL, Liu JT, Ma ZW, Liu Z, Chen YJ. Direct synthesis for N2-unprotected five-membered cyclic guanidines by regioselective [3+2] annulation of aziridines and cyanamides. Org Chem Front 2022. [DOI: 10.1039/d1qo01926k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and efficient [3+2] annulation of 2-substituted aziridines and N-tosyl cyanamides via domino regioselective ring-opening/5-exo-dig cyclization procedure has been developed, allowing the direct preparation for N2-unprotected five-membered cyclic guanidines...
Collapse
|