An efficient cross-coupling of sodium or lithium sulfinates with aryl iodides, using a combination of nickel and photoredox catalysis, is described. The dual catalyst system enables a versatile synthesis of aryl sulfones at room temperature in good yields and displays a broad functional group compatibility. The potential utility of this method in the late-stage diversification of complex molecules and in the conversion of organolithium reagents and sulfur dioxide into sulfones is demonstrated.

A novel, visible‐light‐induced 3‐component synthesis of sulfonylated oxindoles from N‐arylacrylamides, diaryliodonium salts and sulfur dioxide is described. The reaction provides simple access to a wide variety of 3‐[(arylsulfonyl)methyl]indolin‐2‐ones in moderate to excellent yields under mild conditions at room temperature. The transformation proceeds in the absence of any external photosensitizer and enables an efficient, solely visible‐light‐driven fixation of sulfur dioxide.

Photolysis of crystalline aryldiazonium fluoroborates and fluorophosphates gives the corresponding fluoroarenes.