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Reactions of Unsaturated Aldehydes and Ketones

Type II intramolecular ene reactions of unsaturated aldehydes and ketones have been extensively investigated. Ene reactions occur thermally or with Lewis acid catalysis to give 3-methylenecyclohexan-ols52-96-109 or 3-methylenecycloheptanols.110-114 3-Methylenecyclopentanols cannot be formed in type II reactions. However, Lewis or Brpnsted acid induced cyclization of y,8-unsaturated aldehydes and ketones gives zwitterionic intermediates that lose a proton to give unsaturated cyclopentanols85122 or rearrange to cyclopentanones.115-121... [Pg.547]

See other pages where Reactions of Unsaturated Aldehydes and Ketones is mentioned: [Pg.547]    [Pg.60]   


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Aldehydes and ketones, reactions

Aldehydes, unsaturated

Of aldehydes and ketones

Of unsaturated ketones

Reaction of aldehydes

Reactions of ketones

Reactions unsaturated

Unsaturated Aldehydes and Ketones

Unsaturated aldehydes ketones

Unsaturated aldehydes reaction

Unsaturated ketones and

Unsaturated ketones reaction

Unsaturates ketones and

Unsaturates ketones and aldehydes

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