Synthesis of N-Alkyl-2-aryl-5H-imidazo[1,2-b]pyrazol-3-amines by a Three-Component Condensation Reaction
作者:Abbas Rahmati、Meysam Kouzehrash
DOI:10.1055/s-0030-1260154
日期:2011.9
An efficient method has been developed for the synthesis of a novel series of N-alkyl-2-aryl-5H-imidazo[1,2-b]pyrazol-3-amines in good-to-high yields by the three-component condensation of an aromatic aldehyde, an aminopyrazole, and an isocyanide in acetonitrile with 4-toluenesulfonic acid as a catalyst at room temperature.