The solvent-free microwave-assisted synthesis of 2,4,5-substituted and 1,2,4,5-substituted imidazoles is reported. Imidazoles are obtained as a result of the condensation of a 1,2-dicarbonyl compound with an aldehyde and an amine using acidic alumina impregnated with ammonium acetate as the solid support.
据报道,无溶剂的微波辅助合成了2,4,5-取代的和1,2,4,5-取代的
咪唑。通过使用浸渍有
乙酸铵的酸性氧化铝作为固体载体,使1,2-二羰基化合物与醛和胺缩合,得到
咪唑。