反应详情

To a suspension of sodium hydride (0.013 g of a 60% suspension in mineral oil, washed with pentane) in anhydrous N,N-dimethylformamide (4 mL) was added N-{2-[7-(4-Cyano-benzyl)-9-oxa-3,7-diaza-bicyclo[3.3.1]non-3-yl]-ethyl}-methanesulfonamide (0.109 g, 0.30 mmol) at 0° C. The mixture was stirred for 2 hours while the temperature was allowed to warm to room temperature. At 0° C., 4-bromomethyl-benzonitrile (0.065 g, 0.33 mmol) was added. The mixture was stirred for 2 hours at room temperature, whereupon water (5 mL) was added. The aqueous layer was extracted with dichloromethane (3×5 mL) and the combined organic layers were dried over Na2SO4 and concentrated in vacuo. The crude product was purified by chromatography on silica gel using methanol saturated with ammonia dichloromethane as eluent, which afforded 79 mg (54.9%) of the title compound.

1. washwashed with pentane) in anhydrous N,N-dimethylformamide (4 mL)
2. additionwas added
3. extractionThe aqueous layer was extracted with dichloromethane (3×5 mL)
4. dry with materialthe combined organic layers were dried over Na2SO4
5. concentrationconcentrated in vacuo
6. customThe crude product was purified by chromatography on silica gel