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Question

Question: In nucleophilic addition reactions, the reactivity of carbonyl compounds follows the order....

In nucleophilic addition reactions, the reactivity of carbonyl compounds follows the order.

A

HCHO>RCHO>ArCHO>R2CO>Ar2CO\mathrm { HCHO } > \mathrm { RCHO } > \mathrm { ArCHO } > \mathrm { R } _ { 2 } \mathrm { CO } > \mathrm { Ar } _ { 2 } \mathrm { CO }

B

HCHO>R2CO>Ar2CO>RCHO>ArCHO\mathrm { HCHO } > \mathrm { R } _ { 2 } \mathrm { CO } > \mathrm { Ar } _ { 2 } \mathrm { CO } > \mathrm { RCHO } > \mathrm { ArCHO }

C

Ar2CO>R2CO>ArCHO>RCHO>HCHO\mathrm { Ar } _ { 2 } \mathrm { CO } > \mathrm { R } _ { 2 } \mathrm { CO } > \mathrm { ArCHO } > \mathrm { RCHO } > \mathrm { HCHO }

D

ArCHO>Ar2CO>RCHO>R2CO>HCHO\mathrm { ArCHO } > \mathrm { Ar } _ { 2 } \mathrm { CO } > \mathrm { RCHO } > \mathrm { R } _ { 2 } \mathrm { CO } > \mathrm { HCHO }

Answer

HCHO>RCHO>ArCHO>R2CO>Ar2CO\mathrm { HCHO } > \mathrm { RCHO } > \mathrm { ArCHO } > \mathrm { R } _ { 2 } \mathrm { CO } > \mathrm { Ar } _ { 2 } \mathrm { CO }

Explanation

Solution

: Aldehydes are more reractive than ketones towards nucleophilic addition reactions. Aromatic aldehydes and ketones are less reactive than corresponding alphatic aldehydes and ketones.