α-monofluoro-γ-amino acid derivatives has been developed. This reaction conveniently and efficiently provides monofluoroamino acid ethyl ester-quinoxaline-2(1H)-one derivatives under mild conditions. Using removable amide carbonyl alkenes provides an efficient strategy for the preparation of various α-monofluoro-γ-amino acid derivatives. This strategy has the advantages of metal-free, mild conditions, simple