反应详情

To an ice-cooled solution of ethyl 3-{2-fluoro-4-[(4′-hydroxy-2′,6′-dimethylbiphenyl-3-yl)methoxy]phenyl}propanoate (310 mg, 0.736 mmol) in pyridine (8 mL) was added dropwise methanesulfonyl chloride (168 mg, 1.47 mmol). The mixture was stirred at room temperature for 2 days. Water was added, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=10/1-1/1) to give the title compound (320 mg, yield 87%) as a colorless oil.

1. extractionthe mixture was extracted with ethyl acetate
2. washThe extract was washed with saturated brine
3. dry with materialdried over anhydrous magnesium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate=10/1-1/1)