Catalytic Ortho C-H Methylation and Trideuteromethylation of Arylthianthrenium Salts via the Catellani Strategy

We reported a Pd/NBE cooperative catalyzed ortho C−H methylation and trideuteromethylation of arylthianthrenium salts, enabling the efficient synthesis of a wide variety of (trideutero)methylated arenes in moderate to good yields....