ethyl 6-(4-t-butylphenyl)-6-oxohexanoate

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

Ethyl 8-(5-Chloro-2-methoxyphenyl)-8-oxooctanoate

Ethyl 7-(2-Chloro-4,5-difluorophenyl)-7-oxoheptanoate

Ethyl 4-(3,4,5-trimethoxyphenyl)-4-oxobutanoate

Ethyl 8-(2,4,5-trimethoxyphenyl)-8-oxooctanoate