Ethyl 8-(4-t-butylphenyl)-8-oxooctanoate

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

ethyl 6-oxo-6-(4-pentyloxyphenyl)hexanoate

ethyl 7-(4-heptyloxyphenyl)-7-oxoheptanoate

Ethyl 7-(2,4-dimethoxyphenyl)-7-oxoheptanoate

ethyl 5-(3,4-dimethoxyphenyl)-5-oxovalerate

Ethyl 6-(2-acetoxyphenyl)-6-oxohexanoate

Ethyl 5-[4-(N,N-Dimethylamino)phenyl]-5-oxovalerate

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

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

Ethyl 7-(2-Chloro-6-fluorophenyl)-7-oxoheptanoate