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Wang Q, Yuan X, Sun H, Yang J, Yang X, Lin J, Jin Y. Iron(III)-Catalyzed Amine-Release Triple Condensation of Enaminones to C3-Alkenylated Dihydroquinolinones. J Org Chem 2024; 89:10538-10550. [PMID: 38996186 DOI: 10.1021/acs.joc.4c00750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
C3-functionalized dihydroquinolinones represent a class of important biologically active compounds. Although methods for synthesizing C2/4-functionalized dihydroquinolinones have been extensively reported, research on the synthesis of C3-functionalized dihydroquinolinone is extremely rare. Herein, we report for the first time a method for C3-alkenylated dihydroquinolinones via iron(III)-catalyzed amine-release triple condensation of enaminones. These reactions exhibit broad substrate scope and offer operationally simple, low-cost catalyzed procedures in a single step. Subsequent intramolecular and intermolecular additions to the alkene moiety provide diverse C3-functionalized dihydroquinolinone derivatives.
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Affiliation(s)
- Qiaoqiao Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Key Laboratory of Research & Development for Natural Products, School of Pharmacy, Yunnan University, Kunming 650091, P. R. China
| | - Xu Yuan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Key Laboratory of Research & Development for Natural Products, School of Pharmacy, Yunnan University, Kunming 650091, P. R. China
| | - Haoyang Sun
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Key Laboratory of Research & Development for Natural Products, School of Pharmacy, Yunnan University, Kunming 650091, P. R. China
| | - Jimei Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Key Laboratory of Research & Development for Natural Products, School of Pharmacy, Yunnan University, Kunming 650091, P. R. China
| | - Xingjiang Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Key Laboratory of Research & Development for Natural Products, School of Pharmacy, Yunnan University, Kunming 650091, P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Key Laboratory of Research & Development for Natural Products, School of Pharmacy, Yunnan University, Kunming 650091, P. R. China
| | - Yi Jin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Key Laboratory of Research & Development for Natural Products, School of Pharmacy, Yunnan University, Kunming 650091, P. R. China
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Chen Z, Xie X, Chen W, Luo N, Li X, Yu F, Huang J. Facile access to the 2,2-difluoro-2,3-dihydrofuran skeleton without extra additives: DMF-promoted difluorocarbene formation of ClCF 2CO 2Na. Org Biomol Chem 2022; 20:8037-8041. [DOI: 10.1039/d2ob01542k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A practical and facile difluorocarbene-triggered cycloaddition reaction of enaminones was developed, which delivered 2,2-difluoro-2,3-dihydrofurans without any extra additives.
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Affiliation(s)
- Zunsheng Chen
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Xin Xie
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Weiming Chen
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Nianhua Luo
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Xiaoning Li
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Jiuzhong Huang
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
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