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Friedel-Crafts reaction

A Friedel-Crafts reaction is a class of substitution reactions, catalyzed by acidic metal hydrides (e.g., aluminum chloride); an alkyl halide or an acid chloride reacts with an aromatic compound, the alkyl or acyl group replacing a hydrogen atom on the aromatic ring: the carbonium ion formed attacks the ring as an electrophile. See also alkylation.

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