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

ethyl 7-(4-hexylphenyl)-7-oxoheptanoate

ethyl 8-(4-ethoxyphenyl)-8-oxooctanoate

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

Ethyl 4-(4-heptyloxyphenyl)-4-oxobutyrate

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

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

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

Ethyl 4-[3-(N,N-Dimethylamino)phenyl]-4-oxobutanoate

Ethyl 6-[4-(N,N-Diethylamino)phenyl]-6-oxohexanoate

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