Per NCERT §9.5.5(iv), Friedel-Crafts ALKYLATION of benzene uses which reagent system?
AR-Cl with anhydrous AlCl₃
BR-Cl with Na in dry ether
CROH with conc. H₂SO₄
DR-COOH with NaOH/CaO
Answer & Solution
Correct answer: A. R-Cl with anhydrous AlCl₃
NCERT §9.5.5(iv): alkyl halide + anhydrous AlCl₃ generates R⁺, which attacks benzene to form alkylbenzene.
Related questions
Per NCERT §9.5.6, halogens (-Cl, -Br) on benzene are which kind of directors despite theirPer NCERT §9.5.6, which of the following groups is a META-directing substituent on benzenePer NCERT §9.5.5 (EAS mechanism), the carbocation intermediate formed during EAS on benzenPer NCERT §9.5.5(v), Friedel-Crafts ACYLATION of benzene uses an acyl halide + AlCl₃ to gePer NCERT §9.5.5 halogenation, the role of anhydrous AlCl₃ (or FeCl₃) in benzene chlorinatPer NCERT §9.5.5 nitration, the actual ELECTROPHILE that attacks benzene in HNO₃ + H₂SO₄ mPer NCERT §9.5.5, the FIVE common electrophilic substitution reactions of benzene are whicPer NCERT §9.5.2, the carbon atoms of benzene are which hybridisation?