反应详情

Methanesulfonyl chloride (0.124 mL) was added dropwise to a stirred solution of 1-[3-(2-hydroxyethyl)phenyl]-2-pyrrolidinone (0.30 g) and triethylamine (0.42 mL) in dichloromethane (10 mL) at room temperature under an inert atmosphere. The solution was stirred for 2 hours. The reaction mixture was diluted with ethyl acetate (50 mL) and washed with water (50 mL), aqueous hydrochloric acid (1N, 2×50 mL), a saturated aqueous solution of sodium hydrogencarbonate (50 mL) and brine (50 mL). The organic layer was dried over-sodium sulfate and concentrated under reduced pressure. The crude was purified by flash chromatography on silica gel, eluting with ethyl acetate-cyclohexane (50:50) to afford the title compound in 93% yield (0.384 g).

1. washwashed with water (50 mL), aqueous hydrochloric acid (1N, 2×50 mL)
2. dry with materialThe organic layer was dried over-sodium sulfate
3. concentrationconcentrated under reduced pressure
4. customThe crude was purified by flash chromatography on silica gel
5. washeluting with ethyl acetate-cyclohexane (50:50)