A facile regioselective synthesis of (5-amino-4-cyano-1<i>h</i>-imidazol-1-yl) benzoic acids
作者:Síria A. Barros、M. Sameiro T. Gonçalves、Ana M. F. Oliveira-Campos、Fernanda R. P. Proença
DOI:10.1002/jhet.5570440103
日期:2007.1
A simple and efficient method was developped for the synthesis of 3-(5-amino-4-cyano-1H-imidazol-1-yl)-4-substituted benzoicacids 3. These compounds were isolated by intramolecular cyclisation of the corresponding 3-[(Z)-2-amino-1,2-dicyano-vinyl]amino}methyleneaminobenzoic acids in the presence of base.