ethyl 8-(3,5-difluorophenyl)-8-oxooctanoate

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

ethyl 8-(2-methoxyphenyl)-8-oxooctanoate

ethyl 7-(1-naphthyl)-7-oxoheptanoate

Ethyl 5-(2-naphthyl)-5-oxovalerate

ethyl 7-(2,3-difluorophenyl)-7-oxoheptanoate

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

ethyl 8-(2,5-difluorophenyl)-8-oxooctanoate

Ethyl-5-(3-cyanophenyl)-5-oxovalerate

Ethyl 6-(4-cyanophenyl)-6-oxohexanoate