Abstract
One-pot reaction of equimolar amounts of phthaloyl chloride and N-aryl-benzamidrazones in the presence of two equivalents of triethylamine (Et3N), gave at r.t. 4-aryl-3-(o-carboxyphenyl)-5-phenyl-1,2,4-triazoles in good yields. The structure of the obtained products was proved by IR, mass, NMR spectra, and elemental analyses. The mechanism of product formation is discussed.