Palladium-Catalyzed Hydrofunctionalization of Vinyl Phenol Derivatives with Heteroaromatics
摘要:
A hydroheteroarylation reaction of vinyl phenols using an alkyl chloride as the sacrificial hydride source is reported. The method tolerates a wide range of heterocycles as the exogenous nucleophile including indoles and pyrroles. The resulting products are easily processed to biologically relevant scaffolds.
An efficient Br2-catalyzed synthesis of α-(3-indolyl) ketones via dehydrative coupling of simple indoles with acyloins is presented. This reaction proceeded with high C-3 selectivity and a wide substrate scope, and without any metal catalyst. Both the activation of alcohols by carbonyl groups and the catalysis of Br2 were essential. Density functional theory (DFT) calculations indicated that carbonyl
Brønsted acid-catalyzed hydroarylation of activated olefins
作者:Ivana Fleischer、Jola Pospech
DOI:10.1039/c4ra13647k
日期:——
A mild, regiospecific Brønstedacid-catalyzed hydroarylation of activated olefins, capable of the formation of quinone methide-like intermediates, has been investigated. Variously substituted 2- and 4-vinylphenols, 4-vinylaniline or 6-vinyl-naphthalen-2-ol were successfully implemented in a sequential protonation and Friedel–Crafts-type alkylation reaction of electron-rich arenes.