Phosphorus trichloride → HCID 15027704, compound

Participants

Reaction Conditions

Reaction Steps

Phosphorus trichloride (0.2 ml) was added dropwise to a solution of 7-benzyl-1-oxo-9-phenyl-2H,6H-pyrimido[6,1-b]-[1,3]thiazine-6,8(7H)-dione (0.4 g) in DMF (8 ml) under stirring at -10° C. The mixture was stirred at the same temperature for 30 minutes and the resulting solution was poured to ice-water to give crystals and the crystals were collected by filtration. The resulting crude crystals were washed and recrystalized from methylene chloride-methanol to give colorless needles (0.31 g, 81%).

Provenance & Evidence