A simple, highly efficient and regiospecific method for the direct conversion of 3-O-benzylated as well as silylated glycals into the corresponding enones has been developed using PIFA–TEMPO and water reagent system. The reaction is scalable on a gram scale under mild conditions with a yield up to 86%.
使用
PIFA–
TEMPO和
水试剂系统,已经开发出一种简单,高效且具有区域特异性的方法,可将3- O-苄基化和甲
硅烷基化的
糖类直接转化为相应的烯酮。在温和条件下,该反应可扩展至克级,收率高达86%。