6-Acyl- (15, 17) and 6-ethoxycarbonyl-5-substituted 1,2,4-triazines (11) were prepared by refluxing acylhydrazones (10, 14) or N,N-dimethylaminomethylenehydrazones (16) with ammonium acetate in acetic acid. NMR-studies confirmed the high regio selectivity of this procedure.
PPh3-mediated reactions of diazoimides in water: a facile synthesis of fused triazine derivatives
摘要:
Triphenylphosphine-mediated reactions of diazoimides in water were carried out under mild conditions to afford several triazine derivatives in high yields. We have demonstrated an environment friendly methodology to synthesize triazine derivatives. (C) 2009 Elsevier Ltd. All rights reserved.
6-Acyl- (15, 17) and 6-ethoxycarbonyl-5-substituted 1,2,4-triazines (11) were prepared by refluxing acylhydrazones (10, 14) or N,N-dimethylaminomethylenehydrazones (16) with ammonium acetate in acetic acid. NMR-studies confirmed the high regio selectivity of this procedure.
PPh3-mediated reactions of diazoimides in water: a facile synthesis of fused triazine derivatives
Triphenylphosphine-mediated reactions of diazoimides in water were carried out under mild conditions to afford several triazine derivatives in high yields. We have demonstrated an environment friendly methodology to synthesize triazine derivatives. (C) 2009 Elsevier Ltd. All rights reserved.