Electrochemical Oxidative Carbonylation of <i>N</i>H-Sulfoximines

Abstract

The electrochemical synthesis of <i>N</i>-aroylsulfoximines features the use of tetra-<i>n</i>-butylammonium iodide (TBAI) as the medium and a broad substrate scope, thus affording a wide range of <i>N</i>-aroylated sulfoximines in moderate to good yields. The advantages of this electrochemical strategy are augmented by mild reaction conditions that are external oxidant-free, ligand-free, and easy to scale up to gram scale. Both the control experiments and the mechanistic studies revealed that the whole electrochemical process proceeded through a palladium (II/IV/II) catalytic cycle.