Preparation and Conversion of Aminodiphenylcyclopropenium Salts to 1,2,3-Triazines
Diphenylcyclopropenone gave aminodiphenylcyclopropenium fluorosulfate (3) by ethylation with ethyl fluorosulfate, followed by treating with secondary amine in one-pot operation.The salt 3 reacted with sodium azide to afford 1,2,3-triazine in a good yield.