One-pot, three-component synthesis of 1-amidomethyl-imidazo[1,2-a]pyridines catalyzed by ytterbium triflate
作者:Kasiviswanadharaju Pericherla、Bharti Khungar、Anil Kumar
DOI:10.1016/j.tetlet.2011.12.121
日期:2012.3
A straightforward method has been developed for the synthesis of 1-amidomethyl-imidazo[1,2-a]pyridines by Yb(OTf)3 catalyzed three-component reaction of aldehydes, acetamide, and imidazo[1,2-a]pyridines. A series of substituted 3-substituted imidazo[1,2-a]pyridines were synthesized in moderate to good yield (21–74%) under mild reaction condition and the catalyst was recycled for four cycles.
一种直接的方法已经为1-酰氨基甲基咪唑并[1,2的合成已经开发一个]由镱吡啶(OTF)3催化的醛,乙酰胺的三组分反应,和咪唑并[1,2一]吡啶。在温和的反应条件下,以中等至良好的收率(21–74%)合成了一系列取代的3-取代的咪唑并[1,2- a ]吡啶,并将催化剂循环使用四个周期。