Ethyl 5-oxodecanoate

ethyl 6-(3-bromo-4-methylphenyl)-6-oxohexanoate

ethyl 7-(2-iodophenyl)-7-oxoheptanoate

ethyl 4-(4-iodophenyl)-4-oxobutyrate

ethyl 7-oxo-7-(2-trifluoromethylphenyl)heptanoate

ethyl 7-oxo-7-(3-trifluoromethylphenyl)heptanoate

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

ethyl 4-(4-ethylphenyl)-4-oxobutyrate

ethyl 6-(4-isopropylphenyl)-6-oxohexanoate

ethyl 5-(4-hexylphenyl)-5-oxovalerate

ethyl 4-oxo-4-(4-n-propoxyphenyl)butyrate