1-alkyl-4,6-diaryl-tetrahydro-S-triazine- 2(1H)-thiones 3 were prepared by reactions of N,N'-diarylmethylenearylmethanediamines with alkylthioureas, or by mixing arylaldehyde. alkylthioureas and ammonium acetate in one pot process. Amarinethiocynate was obtained by reactions of N,N'-diarylmethylenearylme- thanediamines with arylthioureas. 3 have been oxidized to 1-alkyl-4,6-diaryl-S-triazine-2(1H)- ones by potassium permanganate in the presence of TEBA at room temperature.

Key words: TRIAZONE, OXIDATION REACTION