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Hydrazones of aldehydes and ketones are not prepared in highly acidic medium. Explain. |
Answer» Solution :In highly ACIDIC medium, the `NH_(2)` group of hydrazine gets protonated.  Due to strong -I-effect of the `OVERSET(+)(N)H_(3)` group, the lone pair of ELECTRONS on the `-NH_(2)` group of protonated hydrazine is not available for nucleophilic attack on the C=O group and hence hydrazone formation does not occur. |
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