A one-pot synthesis of 3-substituted-5-carbonylmethyl-1,2,4-oxadiazoles from β-keto esters and amidoximes under solvent-free conditions
作者:Wu Du、Quang Truong、Hongbo Qi、Yan Guo、Harry R. Chobanian、William K. Hagmann、Jeffrey J. Hale
DOI:10.1016/j.tetlet.2007.02.005
日期:2007.3
Herein we report a high yielding one-pot ‘green’ synthesis of 3-substituted-5-carbonylmethyl-1,2,4-oxadiazoles from readily available β-keto esters and amidoximes under simple and convenient solvent-free conditions. No additional base is needed. The reaction likely goes through an acyl ketene intermediate.