Sulfoximines with α‐Ketoester Functionalities at Nitrogen from Cyanoacetates and Air.

Sulfoximines with nitrogen‐bound α‐ketoester units are efficiently prepared by an operationally simple one‐pot reaction sequence in air starting from methoxy(mesyloxy)iodobenzene, NH‐sulfoximines, and cyanoacetates. Key of the process is the in‐situ formation of hypervalent iodine reagents, which serve as electrophilic sulfoximidoyl sources. [ABSTRACT FROM AUTHOR]