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Nucleophilic Addition at the Carbonyl

Which of the ...

Question

Which of the following compounds will react with ethanolic KCN?

A

Ethyl chloride

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B

Acetyl chloride

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C

Chlorobenzene

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D

Benzaldehyde

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Solution

The correct options are
A Ethyl chloride
D Benzaldehyde
RX, aldehydes and ketones react with alcoholic KCN.
(C) is aryl halide; it does not undergo ArSN reaction unless strong EWG (e.g., $(- N O_{2})$ group)is present at o- and p-positions.

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