Directα-alkylation of carbonylcompounds represents a fundamental bond forming transformation in organic synthesis. We report the first ketone-alkylation using olefins and alcohols as simple alkylating agents catalyzed by graphene oxide. Extensive studies of the graphene surface suggest a pathway involving dual activation of both coupling partners. Notably, we show that polar functional groups have
Highly Efficient Addition of Activated Methylene Compounds to Alkenes Catalyzed by Gold and Silver
作者:Xiaoquan Yao、Chao-Jun Li
DOI:10.1021/ja0482637
日期:2004.6.1
A highlyefficient intermolecular addition of 1,3-diketones to alkenes catalyzed by AuCl3/AgOTf was developed. A mechanistic rationale for the reaction has been proposed via a alpha-C-H activation.