Palladium(II)-Catalyzed <i>ortho</i>-Olefination of Arenes Applying Sulfoxides as Remote Directing Groups

A novel palladium-catalyzed <i>ortho</i>-C­(sp²)–H olefination protocol has been developed by the use of sulfoxide as the directing group. Importantly, relatively remote coordination can be accessed to achieve the <i>ortho</i> olefination of benzyl, 2-arylethyl, and 3-arylpropenyl sulfoxide substrates, and the olefinated sulfoxide can be easily transformed to other functionalities