A facile protocol for the synthesis of 3-aminoimidazo-fused heterocycles via the Groebke–Blackburn–Bienayme reaction under catalyst-free and solvent-free conditions
Synthesis of imidazo[1, 2‐a]pyridines via the silver acetate‐catalyzed Groebke‐Blackburn‐Bienayme reaction with ethylene glycol as a biodegradable and sustainable solvent
作者:Mustafa Hussain、Jianhui Liu、Lu Fu、Mehdi Hasan
DOI:10.1002/jhet.3746
日期:2020.3
An efficient, silver‐based catalytic system has been designed for the synthesis of biologically important 3‐aminoimidazo‐fused heterocycles via the Groebke‐Blackburn‐Bienayme reaction, in which AgOAc was used as a catalyst and ethyleneglycol as a solvent from isocyanides, various aryl aldehydes and an 2‐amino heterocycle were also used. Good to excellent yields, high atomic economy and environmentally