The electrophilic bromination or chlorination of benzene requires,in addition to the halogen:
A)a hydroxide ion.
B)a Lewis base.
C)a Lewis acid.
D)peroxide.
E)ultraviolet light.

Question

Quizplus · Accepted Answer

The electrophilic halogenation of benzene involves the addition of a halogen ion to the ring, which requires an electron-deficient species. This is provided by a Lewis acid, such as FeBr3 or AlCl3, which complexes with the halogen to form an electrophilic species that can attack the benzene ring. Options A, B, D, and E are not required for the reaction to occur.

The Electrophilic Bromination or Chlorination of Benzene Requires,in Addition to the Halogen