反应详情

0.5 ml of a 4N solution of hydrogen chloride in dioxane was added to a solution of 520 mg of 3-{2-[2-(3-methoxyphenyl)ethyl]phenoxymethyl}-1-methylpiperidine [prepared as described in step (a) above] in a suitable amount of ethyl acetate, and the resulting mixture was concentrated by distillation under reduced pressure, to produce the hydrochloride as a solid. This solid was dissolved in a small amount of methylene chloride, and then ethyl acetate was added to the resulting solution, which was then allowed to stand at room temperature. The crystals which precipitated were collected by filtration, to give 443 mg (yield 77%) of the title compound as colorless crystals, melting at 191°-193° C.

1. concentrationthe resulting mixture was concentrated by distillation under reduced pressure