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

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

Ethyl 5-(4-methoxy-3-nitrophenyl)-5-oxovalerate

Ethyl 8-[3-(N,N-Dimethylamino)phenyl]-8-oxooctanoate

Ethyl 8-[4-(N,N-Dimethylamino)phenyl]-8-oxooctanoate

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

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

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

Ethyl 8-(5-Chloro-2-methoxyphenyl)-8-oxooctanoate

Ethyl 8-(2-Chloro-4-(methylthio)phenyl)-8-oxooctanoate

Ethyl 6-(2-Chloro-4,5-difluorophenyl)-6-oxohexanoate