Various linear and non-linear primary amines were oxidatively deaminated to afford the corresponding carbonyl compounds in good to excellent yields by the following procedure: (i) initial formation of their N-cyclohexylated or N-mesylated derivatives, (ii) subsequent oxidation of these derivatives by using N-tert-butylphenylsulfinimidoyl chloride (1) and DBU, (iii) one-pot acid-hydrolysis of thus formed imines to carbonyl compounds.