A convenient synthesis of [1,2-a] benzimidazo-1,3,5-triazino-4-thiones and [1,2-a] benzimidazo-1,3,5-triazino-4-ones
Written by sctunisie no commentsN-(2-benzimidazoyl) imidate type 1 react with isocyanates and isothiocyanates to give the corresponding [1, 2-a] benzimidazo-1,3,5-triazin-4-one and [1, 2-a] benzimidazo-1,3,5-triazin-4-thione in 60-75 % overall yield.
R. Abderrahim, B. Hajjem, B. Baccar
Pages 423-426