Synthesis of monofluorooxazoles with quaternary C–F centers through photoredox-catalyzed radical addition of methylene-2-oxazolines

Abstract

A novel photoredox-catalyzed radical addition of methylene-2-oxazolines has been developed under visible light irradiation to synthesize monofluorooxazoles with a quaternary carbon center using 2-bromo-2-fluoro-3-oxo-3-phenylpropionates as radical source. This method with a simple protocol, scalability and high yield offers a facile path to get diverse monofluorinated oxazoles with quaternary C–F centers, which are a class of highly valuable motifs and synthons.