Diazotization of the 3‐aminopyrrole‐4‐carboxamides 6a,b under different conditions directly led to the new ring system pyrrolo[3,4‐d]‐1,2,3‐triazine in excellent yields through an intramolecular coupling reaction. In all the cases it was impossible to isolate the intermediate 3‐diazopyrroles.
No takes yet. Share an insight, caveat, or question.
Dattolo et al. (1989) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: