Three-component oxysulfenylation reaction: two simple and convenient approaches to ß-alkoxy sulfides.

An unprecedented method for the synthesis of ß-alkoxy sulfides via a NaI/HBr-mediated three-component oxysulfenylation reaction of alkenes with arylsulfinic acids and alcohols is reported. Furthermore, I2-promoted oxysulfenylation of alkenes using sodium arylsulfinates instead of arylsulfinic acids to synthesise various ß-alkoxy sulfides is also described.