Racemic 2-(2,4-dinitrophenyl)hydrazono)-5,6-diphenyl-1,3-thiazinan-4-ones and (Z)-N'-(2,4-dinitrophenyl)-2,3-diphenylacrylohydrazide were formed during the diastereoselective reaction between 4-substituted 1-(2,4-dinitrophenyl)thiosemicarbazides and 2,3-diphenylcycloprop-2-enone under refluxing ethanol. The structures of the synthesized compounds were confirmed by single-crystal X-ray analyses.
Keywords: (2,4-Dinitrophenyl)-4-substituted thiosemicarbazides; 1,3-Thiazinan-4-ones; 2,3-Diphenylcyclopropenone; Annulated compounds; Substituted 2,3-diphenylacrylohydrazide.