A convenient new synthesis of fused 1,2,4-triazoles: The oxidation of heterocyclic hydrazones using copper dichloride

Article abstract of DOI:10.1016/j.tet.2005.01.111

A series of 1,2,4-triazoles have been prepared by oxidative intramolecular cyclization of heterocyclic hydrazones with copper dichloride. General applicability of this simple transformation was confirmed by the synthesis of moderate to high yields of 1,2,