Abstract
Reaction of melamine and hydrochloride of aniline, o-, m-, and p-toluidine, p-chloroaniline, and p-aminobiphenyl, respectively, in the molar ratio of 1: 4 by fusion for 90 min s. at 250°c was able to synthesize comparatively pure tri-arylmelamines with over 90% of yield. In case of β-naphthylamine hydrochloride, this substance itself underwent thermal decomposition to give di-β-naphthylamine and the yield of tri-β-naphthylmelamine was low for this reason. Reaction of melamine hydrochloride and aniline, m-, and p-toluidine, and p-phenetidine in the molar ratio of 1: 6 for 5 hr s. at 280°c in S a sealed tube yielded 20-30% diarylmelamine as a main product but triarylisomelamines were not obtained.
