反应详情

1-(4-Benzenesulfonyl-4-methylpentyl)-3-hydroxypiperidine (0.1 g, 0.31 mmol), methyl iodide (22 μL, 0.35 mmol) and sodium hydride (60% dispersion in mineral oil, 15 mg, 0.35 mmol) were combined in tetrahydrofuran (2 ml) and stirred at room temperature for 18 hours. The reaction was quenched by the addition of water and brine and the mixture extracted with ethyl acetate. The combined organic layers were dried (MgSO4) and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel, eluting with 2–5% methanol/dichloromethane, to give the title compound. The hydrochloride salt was obtained by treatment with ethereal hydrogen chloride and crystallisation from ethanol/diethyl ether (77 mg, 74%). NMR of hydrochloride salt:

1. customThe reaction was quenched by the addition of water and brine
2. extractionthe mixture extracted with ethyl acetate
3. dry with materialThe combined organic layers were dried (MgSO4)
4. concentrationconcentrated in vacuo
5. customThe residue was purified by flash column chromatography on silica gel
6. washeluting with 2–5% methanol/dichloromethane