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

ethyl 6-(4-isopropylphenyl)-6-oxohexanoate

ethyl 5-oxo-5-(4-n-pentylphenyl)valerate

ethyl 8-(4-hexylphenyl)-8-oxooctanoate

Ethyl 5-oxo-5-(4-isopropoxyphenyl)valerate

Ethyl 8-oxo-8-(4-isopropoxyphenyl)octanoate

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

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

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

Ethyl 4-(2-acetoxyphenyl)-4-oxobutyrate

Ethyl 6-[3-(N,N-Dimethylamino)phenyl]-6-oxohexanoate

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

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

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

Ethyl 5-(5-Chloro-2-methoxyphenyl)-5-oxovalerate