Propionic Acid → 4,8-Dimethylnona-3,7-dien-2-one

HRID 1580177

Reaktionsgleichung

Reaktionsgleichung von HRID 1580177
[CH3:1][C:2]([CH3:14])=[CH:3][C:4]([O:10]C(=O)C)(OC(=O)C)[CH3:5].[CH3:15][C:16]([CH3:20])=[CH:17][CH2:18]O.C(O)(=O)CC>>[CH3:14][C:2]([CH2:1][CH2:18][CH:17]=[C:16]([CH3:20])[CH3:15])=[CH:3][C:4](=[O:10])[CH3:5]

Komponenten

4

Edukt 3

HCID 1032Propionic AcidHCID 111733-Methyl-2-buten-1-OLHCID 215652104-Methyl-2,2-diacetoxy-3-pentene

Produkt 1

HCID 5496634,8-Dimethylnona-3,7-dien-2-oneAusbeute 81 %

Reaktionsbedingungen

Temperatur
200 °C

Versuchsvorschrift

A mixture of 25 parts of 4-methyl-2,2-diacetoxy-3-pentene, 10 parts of 3-methyl-2-buten-1-ol (prenol) and 0.3 part of propionic acid is heated for 3 hours at about 200°C in a vibratory autoclave at a pressure 30 atmospheres. After cooling, the reaction product is distilled off to give 9.4 parts of 4,8-dimethyl-3,7-nonadien-2-one having a boiling point of 60°-62°C/0.2 mm. The yield is 81% of theory at a conversion of 60% based on the prenol introduced.

Aufarbeitung

  1. temperatureAfter cooling
  2. distillationthe reaction product is distilled off

Quellen und Nachweise

ORD-Eintrag
ord-3e501b683bf9450c823f6605b34fe542
Quelldatensatz
uspto-grants-1976_01
Patentnummer
US03932462

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