Acetone → 6-Methylhepta-3,5-dien-2-one

HRID 1415462

Reaktionsgleichung

[CH3:1][C:2]([CH3:6])=[CH:3][CH:4]=O.[CH3:7][C:8]([CH3:10])=[O:9]>[O-2].[Zn+2]>[CH3:1][C:2](=[CH:3][CH:4]=[CH:7][C:8](=[O:9])[CH3:10])[CH3:6]

Komponenten

Reaktionsbedingungen

Temperatur: 180 °C

Versuchsvorschrift

A mixture of 50 parts of 3,3-dimethylacrolein, 100 parts of acetone and 12 parts of zinc oxide is heated for 3 hours at 180° C and a pressure of 45 atmosphere in a vibrated autoclave. The reactor is then cooled and the mixture is fractionally distilled. 52.5 parts of 2-methyl-2,4-heptadien-6-one is obtained in a yield of 93% of theory based on 3,3-dimethylacrolein at a conversion 76% of theory and with a boiling point of 92° C at 15 mm Hg.

Aufarbeitung

temperatureThe reactor is then cooled
distillationthe mixture is fractionally distilled

Quellen und Nachweise

ORD-Eintrag: ord-9bade372e3a34e03b1da0aa1d20b767b
Quelldatensatz: uspto-grants-1977_01
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US04005147

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