Hydrochloric Acid → 4-Benzamido-1-(4-phenyl-4-hydroxybutyl)piperidine

Participants

Reaction Steps

4-Benzamido-(4-phenyl-4-oxobutyl)piperidine (3.4 g.) was dissolved in methanol (125 ml.) and a solution of sodium borohydride (6.0 g.) in 0.2 N sodium hydroxide (30 ml.) was added at room temperature over a period of 0.5 hours. The resulting mixture was stirred for a further 2 hours and then heated under reflux for 4 hours. The resulting mixture was filtered, the filtrate evaporated almost to dryness and then treated with water (100 ml.). The colourless solid was filtered off, washed with water, dried, dissolved in a small amount of ethanolic hydrogen chloride and treated with ether until crystallisation commenced. Filtration and drying gave 1.875 g. of the hydrochloride of the title compound, m.p. 221° C. (Found: C, 68.1; H, 7.4; N, 7.3. C22H28N2O2.HCl requires C, 67.9; H, 7.5; N, 7.2%).

Provenance & Evidence