A mild and convenient one-pot two-step synthesis of hydroxy- iminodihydrobenzofurans mediated by silica gel under microwave activation conditions
作者:Deepak Kumar Barange、B. Rama Raju、Veerababurao Kavala、Chun-Wei Kuo、Yu-Chen Tu、Ching-Fa Yao
DOI:10.1016/j.tet.2010.03.051
日期:2010.5
A convenient one-pot two-step procedure for the synthesis of hydroxyiminodihydrobenzofurans assisted by microwave irradiation in presence of silica gel is described herein. Cyclic 1,3-dicarbonyl compounds reacted smoothly with various nitroolefins to furnish hydroxyiminodihydrobenzofuran derivatives as the mixture of E and Z isomers. Clean reaction conditions, no work-up procedure, easy isolation and