反应详情

To a solution of 3-cyclopropyl-3-(3-hydroxy-4-methoxyphenyl)propanoic acid (1.40 g) in methanol (50 mL) was added dropwise thionyl chloride (2.0 mL) at room temperature, and the mixture was stirred at room temperature for 1 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure to give the title compound (4.30 g) as a colorless oil. Ethyl acetate (250 mL) was added to the reaction mixture, and the insoluble material was filtered off. The filtrate was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (1.00 g) as a yellow oil.

1. extractionthe mixture was extracted with ethyl acetate
2. washThe extract was washed with saturated brine
3. dry with materialdried over anhydrous sodium sulfate
4. customThe solvent was evaporated under reduced pressure