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Which one is most reactive towards nucle...

Which one is most reactive towards nucleophilic addition reaction?

A

B

C

D

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The correct Answer is:
D
Any substituent in the carbonyl compound that increases the positive charge on the carboxyl carbon will increase reactivity towards nucleophilic addition. `NO_(2)` shown -`M` effect hence.

is most reactive nuclophilic addition reaction. Thus `(d) gt (a) gt (c) gt (b)`.
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