Ethyl 4-(2-acetoxyphenyl)-4-oxobutyrate

Ethyl 5-[4-(N,N-Dimethylamino)phenyl]-5-oxovalerate

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

Ethyl 7-(4-Chloro-2-methoxyphenyl)-7-oxoheptanoate

Ethyl 7-(2-Chloro-6-fluorophenyl)-7-oxoheptanoate

Ethyl 4-(3,4,5-trichlorophenyl)-4-oxobutanoate

Ethyl 6-(2,3,4,5-tetrafluorophenyl)-6-oxohexanoate

Ethyl 4-(2,3,4-trimethoxyphenyl)-4-oxobutanoate

Ethyl 4-[2-(Methylthio)phenyl]-4-oxobutanoate

Ethyl 4-[4-(Ethylthio)phenyl]-4-oxobutanoate

Ethyl 5-(2,4,5-Trimethylphenyl)-5-oxovalerate