Aromatic systems with 10π electrons derived from 3a-azapentalene. Part 37. Cyclization of the anion of azido-s-triazole into the anion of s-triazolo[2,3-d]tetrazole

Abstract

Two N-methyl derivatives of a novel bicyclic system with 10π electrons derived from 3a-azapentalene, s-triazolo[2,3-d]tetrazole, have been synthesized and their structures established by comparison with known isomeric systems using ¹H and ¹³C n.m.r., i.r., and mass spectra. Isomerization of the anion of azido-s-triazole to the anion of s-triazolo[2,3-d]tetrazole is confirmed.