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

ethyl 8-(4-biphenyl)-8-oxooctanoate

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

ethyl 2,2-dimethyl-4-(2-naphthyl)-4-oxobutyrate