Substituted tetrahydro imidazo[4,5-d][1,2,3]triazoles and hexahydrobutanoimidazo[4,5-d][1,2,3]triazoles from the reaction of 1,2,3-triazolium-1-imides with aryl isocyanates and isothiocyanates. Azolium 1,3-dipoles

Abstract

The reaction of aryl substituted 1,2,3-triazolium-1-imide 1,3-dipoles with substituted aryl isocyanates and isothiocyanates gave new ring systems based on the imidazo[4,5-c][1,2,3]triazole structure. With the isothiocyanates an apparent exchange of aryl groups between the dipole and recovered isothiocyanate dipolarophile shed light on the initial intermediate in the reaction.