Chlorination [Cl2 plus catalyst]
Chlorination [Cl2 plus catalyst] Definition:
Chlorination [Cl2 plus catalyst] Explained:
Chlorine reacts with AlCl3 to form a complex in which imparting electrophilic character to the chlorine atom . This electrophilic chlorine atom reacts in the next step , the nucleophilic attack of benzene. Sigma complex, or arenium ion, is also formed. The reaction ends  by deprotonation of sigma complex and, thereby, restoring aromaticity and regenerating the Lewis acid (AlCl3).