2,3-Disubstituted Indoles via Palladium-Catalyzed Reaction of 2-Alkynyltrifluoroacetanilides with Arenediazonium Tetrafluoroborates
作者:Sandro Cacchi、Giancarlo Fabrizi、Antonella Goggiamani、Alcide Perboni、Alessio Sferrazza、Paolo Stabile
DOI:10.1021/ol101321g
日期:2010.7.16
A novel palladium-catalyzed synthesis of free N−H 2,3-disubstituted indoles from arenediazonium tetrafluoroborates and 2-alkynyltrifluoroacetanilides is presented. The reaction tolerates a variety of useful substituents both in the starting alkyne and the arenediazonium salt, including bromo and chloro substituents, nitro, cyano, keto, ester, and ether groups, as well as ortho substituents such as
提出了一种新颖的钯催化四氢硼酸芳族重氮鎓和2-炔基三氟乙酰苯胺合成游离NH 2,3-二取代的吲哚的方法。该反应可耐受起始炔烃和芳二氮杂鎓盐中的多种有用的取代基,包括溴和氯取代基,硝基,氰基,酮基,酯和醚基,以及邻位取代基如甲氧基和甲基。