Palladium‐Catalyzed Solvent‐Controlled Selective Synthesis of Acyl Isoureas and Imides from Amides, Isocyanides, Alcohols and Carboxylates
作者:Ming Cao、Liqiu Liu、Shi Tang、Zhiyuan Peng、Yingchun Wang
DOI:10.1002/adsc.201801245
日期:2019.4.16
A highly selective synthesis of acyl isoureas and imides from readily accessible amides, isocyanides, alcohols and carboxylates based on reaction solvent selection is described. In the presence of a catalytic amount of [1,1′‐bis(diphenylphosphino)ferrocene]dichloropalladium(II) and cupric acetate, treatment of amides and isocyanides in alcohols at 60 °C provided acyl isoureas in high yields. Interestingly