Explain the following reactions.
(a) Wolff-Kishner Reaction
(b) Cannizzaro Reaction

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Detailed Solution

a. Wolff-Kishner Reaction
The reduction of aldehydes and ketones to methylene in presence of hydrazine and followed
by the KOH in boiling solvent like ethylene glycol.
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(b) Cannizzaro Reaction
Aldehydes which do not have alpha-hydrogen atom undergo disproportionation reaction in which, one molecule is reduced to its corresponding alcohol and other molecule of aldehyde is reduced to the salt of the corresponding acid.

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