(k)Nitrous acid forms from sodium nitrite in dilute hydrochloric acid. Nitrosation of benzylaminein water gives benzyl alcohol via a diazonium ion intermediate.Benzyl chloride will also be formed by attack of chloride on the diazonium ion.22.32(a)Aniline is a weak base and yields a salt on reaction with hydrogen bromide.(b)Aniline acts as a nucleophile toward methyl iodide. With excess methyl iodide, a quaternaryammonium salt is formed.(c)Aniline is a primary amine and undergoes nucleophilic addition to aldehydes and ketones toform imines.(d)When an imine is formed in the presence of hydrogen and a suitable catalyst, reductive ami-nation occurs to give an amine.(e)Aniline undergoes N-acylation on treatment with carboxylic acid anhydrides.(f)Acyl chlorides bring about N-acylation of arylamines.(g)Nitrosation of primary arylamines yields aryl diazonium salts.C6H5NH2C6H5NHSO42NaNO2, H2SO4H2
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