Silver-Catalyzed Functionalization of Esters by Carbene Transfer: The Role of Ylide Zwitterionic Intermediates
作者:Riccardo Gava、M. Ángeles Fuentes、Maria Besora、Tomás R. Belderrain、Kane Jacob、Feliu Maseras、Michel Etienne、Ana Caballero、Pedro J. Pérez
DOI:10.1002/cctc.201402241
日期:2014.8
The reaction of esters with ethyl diazoacetate catalyzed by the complex [F27–TpAg(acetone)] generates α‐(acyloxy)acetates in moderate to high yields. This is a novel transformation in the context of carbene‐transfer reactions from diazo compounds that, according to experimental and theoretical data, is suggested to occur through zwitterionic intermediates.
络合物[F 27 -Tp Ag(丙酮)]催化的酯类与重氮乙酸乙酯反应生成α-(酰氧基)乙酸酯,产率中等至高。在重氮化合物进行卡宾转移反应的背景下,这是一种新颖的转变,根据实验和理论数据,该转变建议通过两性离子中间体发生。