Ethanol → 4-(3-Chlorophenyl)-4-oxobutanoic acid

HRID 1493

Reaktionsgleichung

Reaktionsgleichung von HRID 1493
[Na].C(O)C.[Cl:5][C:6]1[CH:7]=[C:8]([CH:13]=[CH:14][CH:15]=1)[C:9]([O:11]C)=O.C(OC)(=O)[CH2:17][CH2:18][C:19]([O:21]C)=[O:20]>CCOCC>[Cl:5][C:6]1[CH:7]=[C:8]([CH:13]=[CH:14][CH:15]=1)[C:9]([CH2:17][CH2:18][C:19]([OH:21])=[O:20])=[O:11]

Komponenten

6

Edukt 4

HCID 702EthanolHCID 7820Dimethyl Succinate2×HCID 17946Methyl 3-chlorobenzoateHCID 5360545Sodium

Produkt 1

HCID 27578284-(3-Chlorophenyl)-4-oxobutanoic acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel

Versuchsvorschrift

Sodium (11 g, spheres) was added to 200 ml ethanol with stirring. When the gas evolution ceased, methyl 3-chlorobenzoate (10 g, 0.057 mole) and dimethyl succinate (9.0 g, 0.615 mole) were added rapidly and the mixture was stirred for 5 minutes at room temperature. The mixture was slowly concentrated on a rotary evaporator to yield a greenish paste which was slurried in 100 ml ether and an additional 2 ml of dimethyl succinate was added. The reaction was evaporated to a paste, quenched with water and extracted with ether. The ether extracts were washed with water and brine, dried and evaporated in vacuo.

Aufarbeitung

  1. stirringthe mixture was stirred for 5 minutes at room temperature
  2. concentrationThe mixture was slowly concentrated on a rotary evaporator
  3. customto yield a greenish paste which
  4. customThe reaction was evaporated to a paste
  5. customquenched with water
  6. extractionextracted with ether
  7. washThe ether extracts were washed with water and brine
  8. customdried
  9. customevaporated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-ce064075330c45f48a8cd178fcf95efd
Quelldatensatz
uspto-grants-1998_03
Patentnummer
US05726162

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