ethyl 7-(2-naphthyl)-7-oxoheptanoate

Ethyl 4-(1-naphthyl)-4-oxobutyrate

Ethyl 4-(2,3-difluorophenyl)-4-oxobutyrate

ethyl 6-(2-fluorophenyl)-6-oxohexanoate

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

ethyl 8-(2-fluorophenyl)-8-oxooctanoate

ethyl 6-(4-biphenyl)-6-oxohexanoate

Ethyl 8-(4-cyanophenyl)-8-oxooctanoate

Ethyl 5-cyclohexyl-5-oxovalerate

ethyl 2,2-dimethyl-4-oxo-4-(4-thiomethylphenyl)butyrate

ethyl 8-cyclopropyl-8-oxooctanoate

Ethyl 4-oxohexanoate

Ethyl 6-oxooctanoate

ethyl 8-oxotridecanoate

Ethyl 3-(1,3-dioxan-2-yl)propionate