Copper-Promoted Desulfitative <i>N</i>‑Arylation of Sulfonamides and Sulfoximines with Sodium Arylsulfinates

A general and direct <i>N</i>-arylation of sulfonamides and NH-sulfoximines by sodium arylsulfinates through a desulfitative pathway was herein demonstrated. The reaction proceeded with catalytic loadings of Cu­(II)-catalysts without any external ligands. And the novel arylation protocol featured for high efficiency (up to 93% yields) and good substituent tolerance (up to 53 examples). Moreover, a plausible reaction mechanism was also discussed