A copper-catalyzedoxidative C(sp(3))-H/N-H coupling of sulfoximines with simple alkanes was developed. This protocol involved C(sp(3))-N bond formation via a radical pathway and tolerated a series of functional groups, such as chloro, methyl and aryl, on the phenyl rings. Apart from sulfoximines, amides, saccharin and aniline also worked well to give the corresponding N-alkylated products.
mild reaction condition, photocatalyst promotes the direct cross coupling of NH-sulfoximines with benzyl bromide to form N-benzylation sulfoximines. Superbases which are usually used in reported coupling of NH-sulfoximines with alkyl halides are not needed in this work. This method is also suitable for the synthesis of N-allyl sulfoximines.