ethyl 4-(2,4-dichlorophenyl)-4-oxobutyrate

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

Ethyl 7-(4-isopropylphenyl)-7-oxoheptanoate

Ethyl 4-(4-hexylphenyl)-4-oxobutyrate

ethyl 8-(2-ethoxyphenyl)-8-oxooctanoate

Ethyl 4-oxo-4-(4-isopropoxyphenyl)butyrate

ethyl 8-oxo-8-(4-pentyloxyphenyl)octanoate

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

ethyl 6-(2,3-dimethoxyphenyl)-6-oxohexanoate

ethyl 6-(2,5-dimethoxyphenyl)-6-oxohexanoate

ethyl 5-(3,4-dimethoxyphenyl)-5-oxovalerate

ethyl 5-(3,5-dimethoxyphenyl)-5-oxovalerate

Ethyl 4-[3-(N,N-Dimethylamino)phenyl]-4-oxobutanoate

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

Ethyl 4-(4-Chloro-2-fluorophenyl)-4-oxobutanoate