The correct order of reactivity in electrophilic substitution reaction of the following compounds is: [2024]

Question

Smart Achievers · Accepted Answer

(4)

Reactivity of the benzene ring towards an electrophile is directly proportional to electron density on the ring.

$- {CH}_{3}$ supplies electrons to benzene by its hyperconjugation and $+ I$ effect.

$- Cl$ Has +M effect and $- I$ effect. The $- I$ effect of $- Cl$ is more than its +M effect. Hence, $- Cl$ decreases electron density on benzene and reduces its reactivity towards electrophilic substitution reactions.

$- {NO}_{2}$ Has –M and $- I$ effect.

Solution

Q.
The correct order of reactivity in electrophilic substitution reaction of the following compounds is: [2024]

1 D > C > B > A

2 B > C > A > D

3 A > B > C > D

4 B > A > C > D

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