1,2,3,5-Tetrazinones and zwitterionic 1,2,4-triazolin-3-ones
Abstract
Treatment of 2-arylazo-1,1-dimethylguanidines (1) with phosgene yields the novel 1,2,3,5-tetrazinones (2), together with isomeric dipolar triazolinones (4); both types of product decompose to give nitrogen, dimethylcyanamide, and aryl isocyanate.