A Desulfonylative Approach in Oxidative Gold Catalysis: Regiospecific Access to Donor‐Substituted Acyl Gold Carbenes
作者:Hongyi Chen、Liming Zhang
DOI:10.1002/anie.201504511
日期:2015.9.28
Donor‐substitutedacylgoldcarbenes are challenging to access selectively by gold‐promoted intermolecular oxidation of internal alkynes as the opposite regioisomers frequently predominate. By using alkynyl sulfones or sulfonates as substrates, the oxidativegoldcatalysis in the presence of substituted pyridine N‐oxides offers regiospecificaccess to acyl/aryl, acyl/alkenyl, and acyl/alkoxy gold carbenes