Aniline to Benzene
`underset("Aniline")(C_(6)H_(5)NH_(2)) underset(0-5^(@)C)overset(NaNO_(2)+HCl) to underset("diazonium chloride") underset("Benzene")(C_(6)H_(5)N_(2)^(+)Cl^(-)) overset(C_(2)H_(5)OH) to underset("Benzene")(C_(6)H_(6)+N_(2)+CH_(3)CHO+HCl)`
