1,4-Dioxane hydrochloride → HCID 66906388, compound

Participants

Reaction Steps

To 289 mg of the crude product of 4-({[4-({(tert-butoxycarbonyl)[(1R)-1-(1-naphthyl)ethyl]amino}methyl)-3-phenylpiperidin-1-yl]carbonyl}amino)benzoic acid was added 2.0 mL of a 4 M hydrogen chloride/1,4-dioxane solution, followed by stirring at room temperature for 2 hours. The reaction mixture was concentrated under reduced pressure, and the residue was then heated under reflux for dissolution in isopropanol. Diisopropylether was added dropwise thereto, and the precipitate was isolated by filtration, and dried under reduced pressure to obtain 159 mg of 4-({[4-({[(1R)-1-(1-naphthyl)ethyl]amino}methyl)-3-phenylpiperidin-1-yl]carbonyl}amino)benzoic acid hydrochloride as a white solid.

Provenance & Evidence