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

Ethyl 6-[3-(N,N-Dimethylamino)phenyl]-6-oxohexanoate

Ethyl 5-[3-(N,N-Dimethylamino)phenyl]-5-oxovalerate

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

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

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

Ethyl 4-(2-Chloro-4-(methylthio)phenyl)-4-oxobutanoate

Ethyl 6-(2-Chloro-4-(methylthio)phenyl)-6-oxohexanoate

Ethyl 4-(2-Chloro-6-fluorophenyl)-4-oxobutanoate

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

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