反应详情

To a solution of ((S)-6-(benzyloxy)-2-((R)-2-(4-fluorophenyl)-2-methoxyethyl)hex-4-enoic acid in 10 mL methanol was added concentrated H2SO4 (150 μL) at room temperature and the resulting solution stirred for 8 h. The reaction mixture was concentrated under reduced pressure, the residue treated with water, and the mixture was extracted with ethyl acetate (3×40 mL). The combined organic layers were washed with brine (2×30 mL) and dried over Na2SO4. The product was isolated by flash column chromatography eluting with 0% to 20% ethyl acetate/hexane gradient solvent to give 494 mg of the title compound as a colorless oil.

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. additionthe residue treated with water
3. extractionthe mixture was extracted with ethyl acetate (3×40 mL)
4. washThe combined organic layers were washed with brine (2×30 mL)
5. dry with materialdried over Na2SO4
6. customThe product was isolated by flash column chromatography
7. washeluting with 0% to 20% ethyl acetate/hexane gradient solvent