1, 2, 3-Triazoles with 4-or 5-amino substituents are available from a limited number of routes, lq2 the classical methods being the displacement of halogen from 4-or 5-halo-1, 2, 3- triazoles by amines3 and the reaction of aryl azides with acet~ nitriles.~ Although triazenes are the recognized intermediates in the best-known route to 5-aminotriazoles, starting from an azide and an activated methylene compound? the use of stable triazene precursors ...