Preparation of Aldehydes:
There are various methods that can be used to prepare aldehydes depending upon the type and requirement of the compounds. Following are some important methods of preparation of aldehydes.
By oxidation of alcohol: After the oxidation of primary and secondary alcohols we can get both aldehydes as well as ketones. Oxidation of primary alcohols results in aldehydes while oxidation of secondary alcohols produces ketones.
Dehydrogenation of alcohols: This is widely used in industries. In this method primary alcohol is passed over metal catalysts such that the product obtained is an aldehyde. This method is preferred for the conversion of volatile alcohols into aldehydes.
From hydrocarbons: Aldehydes are obtained by the ozonolysis of alkenes followed by reacting the ozonolysis products with zinc dust and water. A mixture of aldehydes and ketones is obtained depending upon the structure of the hydrocarbon.
