Direct conversion of methylarenes into dithiocarbamates,thioamides and benzyl esters

A new strategy for the synthesis of a variety of dithiocarbamates and thioamides has been developed employing inexpensive and readily available methylarenes under metal-free and solvent-free conditions. The approach offers a one-pot procedure and has also been extended to the synthesis of a diverse range of benzyl esters.     

Palladium‐Catalyzed Site‐Selective C−H Functionalization of Weakly Coordinating Sulfonamides: Synthesis of Biaryl Sulfonamides

A novel and site selective C?H functionalization of unsubstituted sulfonamides has been developed for the synthesis of ortho aryl sulfonamides. The reaction involves highly regioselective ortho mono arylation of weakly coordinating SO₂NH₂ directing group by means of aryl iodides. Palladium acetate in the presence of silver(I) oxide is found to be the most effective catalytic system.