Gold-Catalyzed Formal C−C Bond Insertion Reaction of 2-Aryl-2-diazoesters with 1,3-Diketones
作者:Yuan-Yuan Ren、Mo Chen、Ke Li、Shou-Fei Zhu
DOI:10.1002/asia.201800934
日期:2018.9.17
Brønsted acid to the reaction mixture improves the yield of the C−C bond insertion product. A reaction mechanism involving cyclopropanation of a gold carbenoid with an enolate and ring‐opening of the resulting donor–acceptor‐type cyclopropane intermediate is proposed. This mechanism differs from that of the traditional Lewis‐acid‐catalyzed C−C bond insertionreaction of diazo compounds with monocarbonyl