Further, the halogen atom
because of its –I effect has some tendency to withdraw electrons from
the benzene ring As a result, the ring gets somewhat deactivated as
compared to benzene and hence the electrophilic substitution reactions
in haloarenes occur slowly and require more drastic conditions as
compared to those in benzene (i) Halogenation
(ii) Nitration
(iii) Sulphonation
Rationalised 2023-24
185 Haloalkanes and Haloarenes
(iv) Friedel-Crafts reaction
Although chlorine is an electron withdrawing group, yet it is ortho-,
para- directing in electrophilic aromatic substitution reactions Why