On the Two-Component Microwave-Mediated Reaction of Isonitriles with Carboxylic Acids: Regarding Alleged Formimidate Carboxylate Mixed Anhydrides
作者:Xuechen Li、Yu Yuan、William F. Berkowitz、Louis J. Todaro、Samuel J. Danishefsky
DOI:10.1021/ja8047078
日期:2008.10.8
Microwave induced two-component coupling (2CC) reaction of carboxylicacids with isonitriles gives rise to various N-formylamides. The formimidate carboxylate mixedanhydride (FCMA) is proposed as the reactive intermediate, which undergoes 1,3-O-->N acyl transfer to give the observed product. The formation and survival of the labile FCMA system has been evaluated.