ethyl 4-(3,4-dimethoxyphenyl)-4-oxobutyrate

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

Ethyl 5-[2-Chloro-4-(methylthio)phenyl]-5-oxovalerate

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

Ethyl 8-(2,3,4,5-tetrafluorophenyl)-8-oxooctanoate

Ethyl 7-(3,4,5-trichlorophenyl)-7-oxoheptanoate

Ethyl 8-(3,4,5-trimethoxyphenyl)-8-oxooctanoate

Ethyl 4-(2,3,4-trimethoxyphenyl)-4-oxobutanoate

Ethyl 6-(4-n-Butylphenyl)-6-oxohexanoate

Ethyl 4-(3-Methyl-2-thienyl)-4-oxobutanoate

Ethyl 4-(3-Bromo-2-thienyl)-4-oxobutanoate