Synthesis of <i>s</i>‐triazines bearing three different substituents

Abstract

Abstract Reaction of N ′‐acyl‐ N,N ‐dimethylamidines with hydrogen sulfide in acetic acid gave N ‐thioacylbenzarmides in almost quantitative yields. S ‐Ethylation of the N ‐thioacylbenzamides with iodoethane gave N ‐aroylthio‐imidates in excellent yields. Reaction of the N ‐aroylthioimidates with acetamidine, benzamidine, or guanidine in ethanol gave s ‐triazines in 60–93% yield.