Hydrochloric Acid → Benzeneacetic acid, alpha-ethyl-, methyl ester

HRID 2224920

Reaktionsgleichung

Reaktionsgleichung von HRID 2224920
[C:1]1([CH:7]([CH2:11][CH3:12])[C:8]([OH:10])=[O:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.Cl.[CH3:14]O>>[C:1]1([CH:7]([CH2:11][CH3:12])[C:8]([O:10][CH3:14])=[O:9])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Komponenten

4

Edukt 3

HCID 313Hydrochloric AcidHCID 887MethanolHCID 70122-Phenylbutyric Acid

Produkt 1

HCID 102780Benzeneacetic acid, alpha-ethyl-, methyl ester

Versuchsvorschrift

2-Phenylbutyric acid (10 g, 61 mmole) was dissolved in methanol (30 ml) treated with concentrated HCl (1 ml) and heated at reflux for 20 hours. The heating was stopped and the reaction mixture cooled to room temperature. The solvent was removed in vacuo and the oily residue was treated with ethyl acetate (100 ml). The organic layer was washed with saturated sodium bicarbonate solution and saturated sodium chloride solution, dried (Na2SO4), filtered and concentrated in vacuo to give the title compound as a clear oil. Yield 10.61 g (97%). 1H NMR (300 MHz, DMSO-d6): δ ppm 0.81 (t, J=7.35 Hz, 3 H) 1.69 m, 1 H) 1.98 (m, 1 H) 3.53 (d, J=7.35 Hz, 1 H) 3.58 (s, 3 H) 7.30 m, 5 H).

Aufarbeitung

  1. temperatureheated
  2. temperatureat reflux for 20 hours
  3. customThe solvent was removed in vacuo
  4. additionthe oily residue was treated with ethyl acetate (100 ml)
  5. washThe organic layer was washed with saturated sodium bicarbonate solution and saturated sodium chloride solution
  6. dry with materialdried (Na2SO4)
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-3f62aa99713645f1982eb32bb8ac8e6b
Quelldatensatz
uspto-grants-2008_05
Patentnummer
US07378414B2

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