Ethyl 4-(4-fluorophenyl)-4-oxobutyrate

Ethyl 4-(2-methylphenyl)-4-oxobutyrate

ethyl 8-(3-methylphenyl)-8-oxooctanoate

ethyl 7-(3,5-dichlorophenyl)-7-oxoheptanoate

ethyl 7-(3,5-difluorophenyl)-7-oxoheptanoate

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

ethyl 4-oxo-4-(4-thiomethylphenyl)butyrate

ethyl 8-(1-naphthyl)-8-oxooctanoate

Ethyl 5-(2,3-difluorophenyl)-5-oxovalerate

Ethyl 4-(2,5-difluorophenyl)-4-oxobutyrate

Ethyl 6-(3-cyanophenyl)-6-oxohexanoate