explain canizzaro reaction

The Cannizzaro Reaction is the disproportionation of an aldehyde with no alpha hydrogens to the corresponding carboxylic acid and alcohol. If alpha hydrogens are present aldol condensations compete with the Cannizzaro reaction. The reaction can occur both intra- and inter-molecularly and can also be carried out in a crossed fashion between two different aldehydes. It is often base-catalysed in the lab, though a range of solvent-free and metal ion catalysed examples have been carried out.

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Hi Akarsh, A query of the nature mentioned by you has been well answered by @Dr MohsinKhan but I would request you to post relevant queries that are related to course/ career and one's education rather than pertaining to any particular topic. All the Best!

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Hi Akarsh, as Shiksha is an education portal and provides guidance regarding education and career sector only. If you have any concern then you may post any query regarding that. However, to solve your query, the Cannizzaro reaction is a chemical reaction that involves the base-induced disproportionation of an aldehyde lacking a hydrogen atom in the alpha position. Cannizzaro first accomplished this transformation, when he obtained benzyl alcohol and benzoic acid from the treatment of benzaldehyde with potassium carbonate. Hope this will help you in the best way. Feel free to raise more queries or you may close the question by liking it or marking it as the best answer. All the best!

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Hi, The Cannizzaro reaction, named after its discoverer Stanislao Cannizzaro, is a chemical reaction that involves the base-induced disproportionation of an aldehyde lacking a hydrogen atom in the alpha position. The cannizzaro reaction is initiated by the nucleophilic attack of a hydroxide ion to the carbonyl carbon of an aldehyde molecule by giving a hydrate anion. This hydrate anion can be deprotonated to give an anion in a strongly alkaline medium. In this second step, the hydroxide behaves as a base.Thus one molecule is oxidized to carboxylic acid and the other one is reduced to an alcohol Cannizzaro first accomplished this transformation in 1853, when he obtained benzyl alcohol and benzoic acid from the treatment of benzaldehyde with potash (potassium carbonate). I hope this answers your query. If you like this answers, than please mark it as a Thumbs Up or rate it as a Best Answer. Thanks, All the Best

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