Hydrochloric Acid → HCID 21498927, compound

Participants

Reaction Steps

A solution of 3.0 g (0.013 mole) of 3-phenacyl-2,3,5,6-tetrahydrothiopyran-4-one, 1.33 g of 3-dimethylaminopropylamine, 20 ml. of ethanol, and one drop of concentrated hydrochloric acid is heated under reflux under nitrogen for 1.5 hours, and then cooled to ambient temperature. The reaction mixture is treated with 4 ml. of saturated ethereal hydrogen chloride and diluted to the cloud point with ether. The solid which separates is collected and recrystallized from ethanol to provide colorless crystals of 1-(3-dimethylaminopropyl)-2-phenyl-1,4,6,7-tetrahydrothiopyrano[4,3-b]pyrrole hydrochloride, m.p. 225° to 227° C. dec.

Provenance & Evidence