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

HRID 1415468

Reaktionsgleichung

Reaktionsgleichung von HRID 1415468
[CH3:1][C:2]([CH3:6])=[CH:3][CH:4]=O.[O-2].[Mg+2].[CH3:9][C:10]([CH3:12])=[O:11]>[Mo](=O)=O.[O-2].[Zn+2]>[CH3:1][C:2](=[CH:3][CH:4]=[CH:9][C:10](=[O:11])[CH3:12])[CH3:6]

Komponenten

6

Edukt 3

HCID 180AcetoneHCID 610203-Methyl-2-butenalHCID 6850729Magnesium monoxide

Produkt 1

HCID 279716-Methylhepta-3,5-dien-2-oneAusbeute 43 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 29320Molybdenum dioxideKatalysatorHCID 3007857Zinc OxideKatalysator

Versuchsvorschrift

50 Parts of 3,3-dimethyl-acrolein and 100 parts of acetone are heated with 12 parts of a catalyst (which has been prepared by calcining a mixture of equimolar amounts of magnesium oxide, molybdenum dioxide and zinc oxide) for 3 hours at 180° C and a pressure of 30 atmospheres and the product is subjected to fractional distillation. 27 Parts of 2-methyl-2,4-heptadien-6-one is obtained which is equivalent to a yield of 43% of theory at a conversion of 86% based on 3,3-dimethyl-acrolein.

Aufarbeitung

  1. customhas been prepared
  2. distillationa pressure of 30 atmospheres and the product is subjected to fractional distillation

Quellen und Nachweise

ORD-Eintrag
ord-0369d8ba49fa4a0b97c3f83f67090a43
Quelldatensatz
uspto-grants-1977_01
Patentnummer
US04005147

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