Synthesis of Sulfoximidoyl‐Containing Hypervalent Iodine(III) Reagents and Their Use in Transition‐Metal‐Free Sulfoximidations of Alkynes

Abstract Well‐defined hypervalent iodine(III) reagents incorporating transferable sulfoximidoyl groups were obtained through ligand exchange reactions of methoxy(tosyloxy)iodobenzene (MTIB) with NH sulfoximines in good to excellent yields. The solid‐state structure of a representative product was characterized by X‐ray crystallography. Utilizing these reagents in synthesis provides a new, transition‐metal‐free approach towards N‐alkynylated sulfoximines.