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Q. The compounds that will undergo Cannizzaro reaction are 1. $ C{{H}_{3}}CHO $ 2. $ {{(C{{H}_{3}})}_{3}}CCHO $ 3. $ PhCHO $ 4. $ C{{H}_{3}}COC{{H}_{3}} $

AMUAMU 1999

Solution:

: Aromatic aldehydes and aliphatic aldehydes lacking $ \alpha - $ hydrogens undergo disproportionation (self oxidation - reduction) in the presence of concentrated alkali. This reaction is called Cannizzaros reaction.