p-Aminoacetophenone → HCID 21484886, compound

Participants

Reaction Steps

A mixture of 6-chloro-2-methylthio-4H-3,1-benzothiazine (57.5 g, 0.25 mole) and p-aminoacetophenone (33.8 g, 0.25 mole) in n-butanol (200 ml) was refluxed overnight. After cooling in a refrigerator for three days, the solid was collected by filtration and recrystallized from ethanol-water mixture to yield 31 g (39%) of product. Recrystallization from ethanol-water mixture gave an analytical sample, m.p. 174°-175°.

Provenance & Evidence