反应详情

A mixture of 2-fluorophenylacetic acid (5.45 g, 35.4 mmol), (S)-1-phenylethanol (5.62 g, 46.0 mmol), EDCI (8.82 g, 46.0 mmol) and DMAP (0.561 g, 4.60 mmol) in CH2Cl2 (100 mL) was stirred at room temperature for 12 hours. The solvent was then concentrated and the residue partitioned with H2O-ethyl acetate. The phases were separated and the aqueous layer back-extracted with ethyl acetate (2×). The combined organic phases were washed (H2O, brine), dried (Na2SO4), filtered, and concentrated in vacuo. The residue was purified by silica gel chromatography (Biotage/0-20% ethyl acetate-hexane) to provide the title compound as a colorless oil (8.38 g, 92%). 1H NMR (400 MHz, CD3OD) δ 7.32-7.23 (m, 7H), 7.10-7.04 (m, 2), 5.85 (q, J=6.5 Hz, 1H), 3.71 (s, 2H), 1.48 (d, J=6.5 Hz, 3H).

1. concentrationThe solvent was then concentrated
2. customthe residue partitioned with H2O-ethyl acetate
3. customThe phases were separated
4. extractionthe aqueous layer back-extracted with ethyl acetate (2×)
5. washThe combined organic phases were washed (H2O, brine)
6. dry with materialdried (Na2SO4)
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. customThe residue was purified by silica gel chromatography (Biotage/0-20% ethyl acetate-hexane)