Ethyl 4-(4-nitrophenyl)-4-oxobutyrate

Ethyl 4-oxo-4-(4-n-pentylphenyl)butyrate

ethyl 6-(2-ethoxyphenyl)-6-oxohexanoate

ethyl 4-oxo-4-(4-pentyloxyphenyl)butyrate

ethyl 8-(4-hexyloxyphenyl)-8-oxooctanoate

ethyl 6-(4-heptyloxyphenyl)-6-oxohexanoate

ethyl 7-(2,6-dimethoxyphenyl)-7-oxoheptanoate

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

Ethyl 8-(4-methoxy-3-nitrophenyl)-8-oxooctanoate

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

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