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ChemistryNEET 2019Aromatic hydrocarbons: electrophilic substitution, directing effects

Hydrocarbons

Among the following, the reaction that proceeds through electrophilic substitution is:

  1. A.Benzenediazonium chloride + Cu2Cl2\mathrm{Cu_2Cl_2} →\to chlorobenzene + N2\mathrm{N_2} (Sandmeyer reaction)
  2. B.Benzene + Cl2\mathrm{Cl_2}, AlCl3\mathrm{AlCl_3} →\to chlorobenzene + HCl (Friedel–Crafts halogenation)✓
  3. C.Benzene + Cl2\mathrm{Cl_2}, UV light →\to benzene hexachloride (free-radical addition)
  4. D.Benzyl alcohol + HCl, heat →\to benzyl chloride + H2O\mathrm{H_2O}

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