3 Preparation of aromatic amines

Reducing nitroarenes to aromatic amines The nitro group on an arene can be reduced an amine group as follows Reagent: Sn and concentrated HCl Conditions: Heating Mechanism:reduction NO2 NH2 + 6[H] As the reaction is carried out in HCl the salt C6H5NH3 +Cl- will be formed. Reacting this salt with NaOH will give phenylamine. phenylamine nitrobenzene + 2H2O