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Question
The most reactive compound towards the formation of cyanohydrin on treatment with KCN followed by acidification is
The most reactive compound towards the formation of cyanohydrin on treatment with KCN followed by acidification is
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Solution
The correct option is B P-Nitrobenzaldehyde
The addition of HCN to a carbonyl compound is a nucleophilic addition reaction.
Due to electron withdrawing nature of NO2 group, the partial +ve charge on the carbon atom of the carbonyl group in p-nitro-benzaldehyde increases and hence becomes more susceptible for nucleophilic attack by CN– ion.
Therefore the correct answer is (b).
The addition of HCN to a carbonyl compound is a nucleophilic addition reaction.
Due to electron withdrawing nature of NO2 group, the partial +ve charge on the carbon atom of the carbonyl group in p-nitro-benzaldehyde increases and hence becomes more susceptible for nucleophilic attack by CN– ion.
Therefore the correct answer is (b).
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