Ethyl 4-(3,5-difluorophenyl)-4-oxobutyrate

Ethyl 5-(3-fluoro-4-methylphenyl)-5-oxovalerate

Ethyl 6-(2-methoxyphenyl)-6-oxohexanoate

ethyl 8-(2,3-difluorophenyl)-8-oxooctanoate

ethyl 7-(2,5-difluorophenyl)-7-oxoheptanoate

ethyl 8-(2,6-difluorophenyl)-8-oxooctanoate

Ethyl-5-(4-cyanophenyl)-5-oxovalerate

ethyl 4-(3,4-difluorophenyl)-2,2-dimethyl-4-oxobutyrate

Ethyl 6-cyclohexyl-6-oxohexanoate

Ethyl 5-cyclopropyl-5-oxovalerate

Ethyl 8-oxododecanoate