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

ethyl 8-(2,4-dimethoxyphenyl)-8-oxooctanoate

ethyl 7-(2,5-dimethoxyphenyl)-7-oxoheptanoate

ethyl 4-(3,4-dimethoxyphenyl)-4-oxobutyrate

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

Ethyl 5-(2-acetoxyphenyl)-5-oxovalerate

Ethyl 6-(4-methoxy-3-nitrophenyl)-6-oxohexanoate

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

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

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

Ethyl 6-(5-Chloro-2-methoxyphenyl)-6-oxohexanoate