Facile isocyanide-based one-pot three-component regioselective synthesis of highly substituted pyridin-2(1H)-one derivatives at ambient temperature
作者:Ming Li、Wei Kong、Li-Rong Wen、Fang-Hui Liu
DOI:10.1016/j.tet.2012.03.124
日期:2012.6
A novel one-pot three-component regioselective synthesis of highly substituted pyridin-2-one derivatives starting from simple and readily available starting materials is described. The reactive zwitterionic intermediate generated by the addition of an isocyanide to dimethyl acetylenedicarboxylate (DMAD) was trapped with N-arylidene-2-cyanoacetohydrazides to afford the title compounds in moderate to