ethyl 4-(2,4-dimethoxyphenyl)-4-oxobutyrate

ethyl 8-(3,5-dimethoxyphenyl)-8-oxooctanoate

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

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

Ethyl 6-(4-Chloro-2-fluorophenyl)-6-oxohexanoate

Ethyl 6-(2-Chloro-4-(methylthio)phenyl)-6-oxohexanoate

Ethyl 6-(2-Chloro-4,5-difluorophenyl)-6-oxohexanoate

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

Ethyl 7-(2,4,5-trimethoxyphenyl)-7-oxoheptanoate

Ethyl 8-(4-n-Propylphenyl)-8-oxooctanoate

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