Water → HCID 23362013, compound

Participants

Reaction Steps

Phosphorus pentasulphide (2.25 g) was added to a solution of 3-trifluoromethyl-9,10-dihydrodibenzo [b,f][1,4]thiazepin-11-one (2 g, 6.8 mmol) in pyridine (30 ml) and the mixture heated under reflux for 6.5 hr. The mixture was allowed to cool and then poured into warm water (100 ml) with stirring. Filtration of the cooled mixture and recrystallisation from ethanol gave the title compound as yellow needles (1.68 g, m.p. 236°-239° C., Rf 0.58, hexane/EtOAc 2:1).

Provenance & Evidence