ZnO nanoparticles as reusable heterogeneous catalyst for efficient one pot three component synthesis of imidazo-fused polyheterocycles
作者:Suman Swami、Nisha Devi、Arunava Agarwala、Virender Singh、Rahul Shrivastava
DOI:10.1016/j.tetlet.2016.02.045
日期:2016.3
relevant pyrazole coupled imidazo[1,2-a]pyridine derivatives via three component reaction of alkyl-4-formyl-1-phenyl-1H-pyrazole-3-carboxylate, 2-aminopyridine and isocyanide in the presence of nano-crystalline ZnO in ethanol through one pot chemical operation. The present synthetic protocol provides several advantages like operational simplicity, short reaction time, reusable catalyst, and easy work-up procedure
通过烷基-4-甲酰基-1-苯基-1 H-吡唑-的三组分反应,开发了一种有效,简单,环境友好的合成方案,用于合成生物学上和医学上相关的吡唑偶联的咪唑并[1,2- a ]吡啶衍生物。通过一锅化学操作,在乙醇中存在纳米晶体ZnO的情况下,将3-羧酸盐,2-氨基吡啶和异氰化物。本合成方案具有几个优点,例如操作简单,反应时间短,可重复使用的催化剂和后处理程序容易。