Copper-Catalyzed Selective 1,2-Difunctionalization of N-Heteroaromatics through Cascade C–N/C═C/C═O Bond Formation

Autor: He Qianlin, Feng Xie, Zhongzhi Zhu, Wanyi Liang, Xiuwen Chen, Guo Ziyin, Chuanjiang Xia, Yibiao Li
Rok vydání: 2020
Předmět:
Zdroj: Organic Letters. 22:7976-7980
ISSN: 1523-7052
1523-7060
DOI: 10.1021/acs.orglett.0c02910
Popis: This study presents an efficient strategy for constructing 1,2-difunctionalized quinoline derivatives via the multicomponent cascade coupling of N-heteroaromatics with alkyl halides and different terminal alkynes. This reaction was achieved through sequential functionalization at the one- and two-positions of quinolines, which displayed a broad substrate scope, environmental friendliness, excellent functional group tolerance, high atom efficiency, and chemoselectivity. The multicomponent coupling involved the abnormal construction of new C-N, C═C, and C═O bonds in one pot. The applicability of this method was further demonstrated by the late-stage functionalization of complex drug molecules under the established conditions.
Databáze: OpenAIRE