Ethyl 7-(4-bromophenyl)-7-oxoheptanoate

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

ethyl 4-(3-fluoro-4-methylphenyl)-4-oxobutyrate

ethyl 5-oxo-5-(4-thiomethylphenyl)valerate

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

Ethyl 4-oxo-4-(9-Phenanthryl)butyrate

Ethyl 8-oxo-8-(9-Phenanthryl)octanoate

ethyl 8-(2,4-difluorophenyl)-8-oxooctanoate

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

ethyl 7-(2,6-difluorophenyl)-7-oxoheptanoate

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