ethyl 8-(3,4-difluorophenyl)-8-oxooctanoate

ethyl 6-(2,3-difluorophenyl)-6-oxohexanoate

ethyl 5-(2,6-difluorophenyl)-5-oxovalerate

Ethyl 8-(3-cyanophenyl)-8-oxooctanoate

Ethyl 5-(4-biphenyl)-5-oxovalerate

ethyl 2,2-dimethyl-4-(2-naphthyl)-4-oxobutyrate

ethyl 8-cyclopropyl-8-oxooctanoate

Ethyl 4-oxooctanoate

Ethyl 6-oxononanoate

Ethyl 5-oxo-5-(2-pyridyl)valerate

Ethyl 2-(2-oxopropyl)benzoate