1-(1,2,3-triazol-4-yl)-benzimidazolones, a new series of heterocyclic derivatives

New 1-(1,2,3-triazol-4-yl)-benzimidazolone derivatives were obtained on pursuing research about new tricyclic derivatives of medicinal interest, bearing a 1,2,3-triazole ring fused with another heterocyclic ring. 1-[(5-Carboxamido)-1,2,3-triazol-4-yl] was prepared by four different chemical routes and it was unequivocally confirmed by spectroscopic methods. Its chemical behaviour, was evaluated by some common chemical reactions such as hydrolysis, esterification, decarboxylation, nitration and N-methylation.