Organic Sulfinic Acids and Salts in Visible Light-Induced Reactions

Abstract Sulfinic acids and their salts are a useful source of sulfur-containing structures. Photocatalysis of these compounds with visible light enables to achieve various transformations under mild conditions. This review summarizes visible-light-induced reactions of sulfinic acids and their salts. It is organized by reaction type and brief discussions on plausible reaction mechanisms for typical transformations are presented. 1 Introduction 2 Sulfonylation Reactions 2.1 Sulfonylation of Alkenes 2.2 Sulfonylation of Alkynes 2.3 Sulfonylation of Arenes 2.4 sp3 C–H Functionalization 3 Desulfonylation Reactions 4 Sulfenylation Reactions 4.1 Sulfenylation of Heteroarenes 4.2 Sulfenylation of Carbonyl Chlorides 5 Conclusions