ethyl 5-(2-ethoxyphenyl)-5-oxovalerate

ethyl 8-(4-ethoxyphenyl)-8-oxooctanoate

ethyl 4-oxo-4-(4-pentyloxyphenyl)butyrate

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

ethyl 8-(2,3-dimethoxyphenyl)-8-oxooctanoate

ethyl 4-(2,5-dimethoxyphenyl)-4-oxobutyrate

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

ethyl 6-(3,5-dimethoxyphenyl)-6-oxohexanoate

Ethyl 7-[3-(N,N-Dimethylamino)phenyl]-7-oxoheptanoate

Ethyl 7-[4-(N,N-Dimethylamino)phenyl]-7-oxoheptanoate

Ethyl 5-(4-Chloro-2-fluorophenyl)-5-oxovalerate

Ethyl 8-(4-Chloro-2-methoxyphenyl)-8-oxooctanoate

Ethyl 7-(5-Chloro-2-methoxyphenyl)-7-oxoheptanoate

Ethyl 7-(2-Chloro-4,5-difluorophenyl)-7-oxoheptanoate

Ethyl 4-(2,3,4,5-tetrafluorophenyl)-4-oxobutanoate