Ethyl 6-oxo-6-(4-isopropoxyphenyl)hexanoate

ethyl 5-oxo-5-(4-pentyloxyphenyl)valerate

ethyl 4-(2,3-dimethoxyphenyl)-4-oxobutyrate

ethyl 8-(2,5-dimethoxyphenyl)-8-oxooctanoate

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

ethyl 7-(3,4-dimethoxyphenyl)-7-oxoheptanoate

ethyl 8-(3,4-dimethoxyphenyl)-8-oxooctanoate

Ethyl 4-(2-methyl-5-fluorophenyl)-4-oxobutyrate

Ethyl 7-(4-methoxy-3-nitrophenyl)-7-oxoheptanoate

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

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

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

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

Ethyl 7-(2-Chloro-4-(methylthio)phenyl)-7-oxoheptanoate

Ethyl 4-(2-Chloro-4,5-difluorophenyl)-4-oxobutanoate