Palladium‐Catalyzed Intramolecular Oxidative CH Sulfuration of Aryl Thiocarbamates

Abstract A palladium‐catalyzed intramolecular CH bond sulfuration reaction of aryl thiocarbamates has been developed. This strategy provides a new route to benzo[ d ][1,3]oxathiol‐2‐ones with tolerance of a wide range of substituents. Mechanistic studies suggested that the CH activation–sulfuration to afford 2‐imino‐1,3‐benzoxathiole intermediate might involve an electrophilic palladation process. magnified image