N-(3-chloropropyl)piperidine hydrochloride → 3-(1-(3-Piperidylpropyl)-4-piperidyl)-2-aza-1-oxaindene Hydrochloride

Participants

Reaction Steps

Using 4-(3-benzisoxazolyl)piperidine (191 mg, 0.80 mmol) and 1-(3-chloropropyl)piperidine hydrochloride (222 mg, 1.1 mmol) instead of 4-(3-indolyl)piperidine and 1-(3-chloropropyl)-3-(4-methoxyphenyl)piperidine hydrochloride respectively, reaction and concentration were carried out in the same procedure as Example 2. The resulting crude product was purified by column chromatography on a silica gel (silica gel NH-DM 1020 produced by Fuji Silysia Chemical Ltd., eluent; hexane:ethyl acetate=3:1) to afford a free form (236 mg) of the title compound as a pale yellow viscous oil. After adding hydrochloric acid/methanol to a solution of the free form in methanol, the mixture was concentrated and was then recrystallized from methanol/ether to afford the title compound (277 mg, yield: 86%) as white crystals.

Provenance & Evidence