question_answer

Which one of the following compounds will be most easily attached by an electrophile? [AIPMT 1998]

A)

B)

C)

D)

Correct Answer: D

Solution :

[d]  atom shows o/p-directive influence but deactivate the benzene ring, while  and  groups show o/p influence but activates the benzene ring but in these  group activate the benzene ring more than .

Hence, order of electrophilic substitution is