Statement I: Alkylation of benzene by Friedel-Crafts reaction often gives polyalkylated benzene. Statement II: The ring gets activated for further substitution after the introduction of one alkyl grou

Question

Statement I: Alkylation of benzene by Friedel-Crafts reaction often gives polyalkylated benzene. Statement II: The ring gets activated for further substitution after the introduction of one alkyl group.

Prashant Kotian · Accepted Answer

Correct answer: A. Alkyl groups are electron-releasing (activating). Once one alkyl group is added, the new alkylbenzene is more reactive than the original benzene, making it highly susceptible to a second (and third) electrophilic attack, leading to polyalkylation.

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