Silica-sulfuric acid: a highly efficient catalyst for the synthesis of imidazo[1,2-a]pyridines using trimethysilyl cyanide or cyanohydrins
作者:Anatoliy I. Polyakov、Vera A. Eryomina、Lidiya A. Medvedeva、Nadezhda I. Tihonova、Anna V. Listratova、Leonid G. Voskressensky
DOI:10.1016/j.tetlet.2009.05.080
日期:2009.7
This Letter describes a novel synthetic approach towards imidazo[1,2-a]pyridines via a three-component condensation using trimethylsilyl cyanide (TMSCN) or cyanohydrins as the source of CN− ions and silica-sulfuric acid as the catalyst.