Síntesis de piridazin-3(2H)-onas asistida por microondas en condiciones libre de disolvente

Abstract

The synthesis of a series of pyridazin-3(2H)-ones and cinnolin-3,5-dione in the reaction of acetophenones p-substituted or dimedone with glyoxilic acid and hydrazine hydrate under microwave irradiation and solvent-free conditions is described. Pyridazinones are nitrogenated heterocyclic compound synthetically produced which have been systematically studied due to their promising biological and pharmacological activity. The structure of the products is based on detailed NMR analysis of experiments such as 1H, 13C, HSQC, HMBC and mass spectrometry. This methodology leads to good yields in short reaction times. This is of especial interest from the environmental point of view.