ethyl 5-(2,3-dimethoxyphenyl)-5-oxovalerate

Ethyl 6-(5-Chloro-2-methoxyphenyl)-6-oxohexanoate

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

Ethyl 8-(2-Chloro-6-fluorophenyl)-8-oxooctanoate

Ethyl 4-(2,3,4,5-tetrafluorophenyl)-4-oxobutanoate

Ethyl 6-(3,4,5-trichlorophenyl)-6-oxohexanoate

Ethyl 5-(2,4,5-trimethoxyphenyl)-5-oxovalerate

Ethyl 4-(4-n-Butylphenyl)-4-oxobutanoate

Ethyl 4-(4-n-Propylphenyl)-4-oxobutanoate

Ethyl 5-(3-Bromo-2-thienyl)-5-oxovalerate

Ethyl 5-(3-Methyl-2-thienyl)-5-oxovalerate