The Isolation and Characterization of 1,4-Dibenzyl-5,6-Diphenyl-1,2,3,4-Tetraaza-2-Cyclohexene

The reaction of 1,1,4,4-tetrabenzyl-2-tetrazene with sulfuryl chloride in benzene at room temperature gave benzyl azide, dibenzylamine and benzaldehyde. In addition, another compound was isolated as a very minor product. On the basis of its elemental analysis and spectral data, this compound was assigned the structure of 5,6-diphenyl-1,4-dibenzyl-1,2,3,4-tetraaza-2-cyclohexene, the first cyclic 2-tetrazene ever reported.