Rf. Fandy et al., REACTION OF THIOAMIDES WITH 2-ACETAMIDO-3-CHLORO-1,4-NAPHTHOQUINONE -A NOVEL SYNTHESIS OF NAPHTH[2-3-D]IMIDAZOLE-4,9-DIONES, Afinidad, 54(471), 1997, pp. 401-404
The reaction of thioamides 8 with 2-acetamido-3-chloro-1,4-naphthoquin
one 3 in ethanol under refluxing condition gave naphth[2,3-d]imidazole
-4,9-diones 10. The reaction of thiosemicarbazide derivatives le with
3 under similar conditions gave naphtho[2,3-e]-1,2,4-triazine-5,10-dio
nes 14.