Ncert Exercises & Solutions

Chlorobenzene is formed by the reaction of chlorine with benzene in the presence of ${AlCl}_{3}$ . Which of the following species attacks the benzene ring in this reaction?

$1 . C l^{-}$

$2 . C l^{+}$

$3 . A l C l_{3}$

$4 . {[A l C l_{4}]}^{-}$

In this reaction, AlCl

_{3}

will act as lewis acid catalyst which facilitate hetrolytic cleavage of chlorine molecule to produce Cl⁺ and $AlCl_{4}^{-}$. This CI

^{+}

will act as electrophile which further attacks on electronically rich benzenoid ring and give aromatic electrohilic substitution.

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