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  4. The formation of cyanohydrin from acetone is which type of reaction?

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Q. The formation of cyanohydrin from acetone is which type of reaction?

NTA AbhyasNTA Abhyas 2022

Solution:

Cyanohydrin formation:
Solution
This reaction is a nucleophilic addition reaction.
Step (i): The nucleophilic carbon in the cyanide adds to the electrophilic carbon in the polar carbonyl group, electrons from the $C=O$ move to the electronegative $O$ creating an intermediate alkoxide.
Step (ii): At the end of the reaction protonation of the alkoxide oxygen creates the cyanohydrin product.