THERMOLYSIS AND PHOTOLYSIS OF 4-DIAZO-1,2,3-TRIAZOLES IN BENZENOID SOLVENTS, SYSTEMS WHICH REVEAL DECOMPOSITION OF DIAZO COMPOUNDS TO CARBENES TO DIAZO COMPOUNDS TO CARBENES.

Article abstract of DOI:10.1016/S0040-4039(00)85773-1

4-Diazo-1,2,3-triazoles thermolyze and photolyze to 4H-1,2,3-triazolylidenes which (1) convert benzenes to 4-phenyl-1,2,3-triazoles or/and (2) isomerize to α-diazonitriles which react carbenically with benzenes by addition, ring-expansion or substitution processes.