試題詳解

36. Which of the following statements best describes a key step in the mechanism of the reaction between benzene and bromine in the presence of FeBr3?
(A) A bromide ion attacks benzene in the slow step.
(B) FeBr3 forms a π-complex with benzene.
(C) A complex of FeBr3 and Br2 reacts with benzene.
(D) Br2 adds to a double bond of benzene.
(E) In a concerted process, Br2 attacks benzene, displacing a proton and producing bromobenzene.