CBSE Class 12 Chemistry Notes: Aldehydes & Ketones – General CBSE Class 12 Chemistry Notes: Aldehydes & Ketones – Methods of Prepration of Aliphatic Aldehydes Kiteones

From Alcohols

(a) By Direct oxidation:Aldehydes are prepared by oxidation of 1° alcohols. Refer to Alcohols

(b) By catalytic dehydrogenation

From Acid chlorides

Aldehydes are prepared from acid chlorides by reaction with H₂ in the presence of palladium catalyst supported on BaSO₄.

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