Abstract
Heating of a mixture of cyanuric chloride and aromatic amines in the molar ratio of 1 : 3 in benzene or acetone, removing of the solvent and heating of the residue for 15 min at 160-250°c yielded over 90% of triarylmelamines. Reaction by heating of aromatic amines other than aniline for long period of time at high temperature of 290-310°c induced the side reaction and good result could not be obtained. Of 10 kinds of synthesized triarylmelamines, the following 7 kinds of them are new compounds (triaryl group and mp given) : tri-o-toluyl, 219-20°c; tri-m-toluyl, 174-5°c; tris-p-ethoxyphenyl, 189-90°c; tris-p-chlorophenyl, 251-2°c; tri-p-biphenylyl, 282-3°c; tris-p-acetaminophenyl, 300-2°c (molar ratio 1: 5, heated 5min at 160°c with 74% yield), and tris-p-aminophenyl, 288-9°c (prepared by hydrolysis of its acetyl derivatives).
