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US 4,219,504 AGranted
Preparation of 2-(2-acetyl-3-oxobutyl)-3,3-dimethylcyclopropanecarbaldehyde
AssigneeShell Oil Company
InventorsPieter A. Verbrugge, Petrus A. Kramer
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Abstract
A process for the preparation of an aldehyde or a ketone by ozonolysis of an ethylenically unsaturated compound in the presence of an anti-oxidant followed by reductive cleavage of the ozonolysis product.
Claims14
A process for the preparation of an aldehyde of the general formula:
- ##STR7## wherein R represents an alkanoyl group containing fewer than five carbon atoms, which comprises ozonolysis of a 4-substituted-2-carene compound of the general formula:
- ##STR8## wherein R has the same meaning as in the general formula I, with a gaseous mixture comprising ozone and oxygen in the presence of a sterically hindered phenol or aromatic amine as an antioxidant, followed by reductive cleavage of the ozonlysis product obtained.
Dependencies are inferred from the claim text.