Synthesis of s‐triazines bearing three different substituents

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.