Copper-catalyzed, directing group-assisted fluorination of arene and heteroarene C-H bonds.

ABSTRACT: We have developed a method for direct, copper-catalyzed, auxiliary-assisted fluorination of ?-sp(2) C-H bonds of benzoic acid derivatives and ?-sp(2) C-H bonds of ?,?-disubstituted benzylamine derivatives. The reaction employs a CuI catalyst, a AgF fluoride source, and DMF, pyridine, or DMPU solvent at moderately elevated temperatures. Selective mono- or difluorination can be achieved by simply changing reaction conditions. The method shows excellent functional group tolerance and provides a straightforward way for the preparation of ortho-fluorinated benzoic acids.

SUBMITTER: Truong T 

PROVIDER: S-EPMC3733384 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature