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The Cannizzaro reaction is a redox reaction that involves the base-induced disproportionation of two molecules of a non-enolizable aldehyde to give a primary alcohol and a carboxylic acid. Learn about the mechanism, scope, variations and examples of this reaction, named after Stanislao Cannizzaro who discovered it in 1853. " The disproportionation reaction of aldehydes without α-hydrogens in presence of a strong base to furnish an alcohol and a carboxylic acid is called Cannizzaro reaction . One molecule of aldehyde is reduced to the corresponding alcohol, while a second one is oxidized to the carboxylic acid. Cannizzaro Reaction This redox disproportionation of non-enolizable aldehydes to carboxylic acids and alcohols is conducted in concentrated base. α-Keto aldehydes give the product of an intramolecular disproportionation in excellent yields. Cannizzaro reaction , examples, mechanism, and its applications have been discussed here. The aldehydic compounds having no α-hydrogen atoms in presence of strong base undergo disproportionation to form an equal amount of corresponding alcohol and carboxylic acids. Such a reaction is called the Cannizzaro reaction . Some of the examples of the Cannizzaro reaction involve the reduction of benzaldehyde, formaldehyde, trimethyl acetaldehyde, etc.
