Ethyl 4-(3-nitrophenyl)-4-oxobutyrate

ethyl 8-oxo-8-(2-trifluoromethylphenyl)octanoate

Ethyl 4-oxo-4-(4-trifluoromethylphenyl)butyrate

ethyl 7-(2,3-dichlorophenyl)-7-oxoheptanoate

ethyl 7-(4-ethylphenyl)-7-oxoheptanoate

ethyl 4-(4-isopropylphenyl)-4-oxobutyrate

ethyl 7-oxo-7-(4-n-pentylphenyl)heptanoate

ethyl 5-(2-ethoxyphenyl)-5-oxovalerate

ethyl 8-(4-ethoxyphenyl)-8-oxooctanoate

ethyl 4-oxo-4-(4-pentyloxyphenyl)butyrate

ethyl 5-oxo-5-(4-pentyloxyphenyl)valerate

ethyl 8-(2,3-dimethoxyphenyl)-8-oxooctanoate

ethyl 4-(2,5-dimethoxyphenyl)-4-oxobutyrate

ethyl 8-(2,6-dimethoxyphenyl)-8-oxooctanoate

ethyl 6-(3,5-dimethoxyphenyl)-6-oxohexanoate