Palladium‐Catalyzed Decarbonylative Difluoromethylation of Acid Chlorides at Room Temperature

Methods for the direct synthesis of difluoromethylated arenes are sparse, despite the importance of the difluoromethyl group in medical, agro‐, and materials chemistry. A palladium‐catalyzed decarbonylative cross‐coupling reaction of acid chlorides with a difluoromethyl zinc reagent is achieved to access difluoromethylated compounds. The transformation proceeds at room temperature and shows broad functional group tolerance, thus providing a general and efficient method for decarbonylative difluoromethylation of a wide range of aromatic carboxylic acids.