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Give reasons in one or two sentances for...

Give reasons in one or two sentances for the following: 'Hydrazones of aldehydes and ketones are not prepared in highly acidic medium'.

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Hydazones are formed by reacting carbonyl compounds with hydrazin`(overset(* *)(N)H_(2)-overset(* *)(N)H_(2))` which acts as a nucleophile. In the strongly acidic medium, hydrazine gets protonated and therefore, It in not a position to act as nuclephile. As a result, aldehydes and ketones are not prepared in strongly acidic medium. For more details consult section 8.
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