Reaktion #46640

Reaktionsgleichung

2-fluorophenylacetic acid

(S)-1-phenylethanol

EDCI

→

title compound

Ausbeute 92.0%

(S)-1-Phenylethyl 2-(2-fluorophenyl)acetate

Ausbeute 92.0%

Lösungsmittel

CH2Cl2

Reaktionsbedingungen

Aufarbeitung

1. 1
   EinengenThe solvent was then concentrated
2. 2
   Sonstigethe residue partitioned with H2O-ethyl acetate
3. 3
   SonstigeThe phases were separated
4. 4
   Extraktionthe aqueous layer back-extracted with ethyl acetate (2×)
5. 5
   WaschenThe combined organic phases were washed (H2O, brine)
6. 6
   Trocknendried (Na2SO4)
7. 7
   Filtrationfiltered
8. 8
   Einengenconcentrated in vacuo
9. 9
   SonstigeThe residue was purified by silica gel chromatography (Biotage/0-20% ethyl acetate-hexane)

Vorschrift

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).

Quelle