Ethyl 5-cyclobutyl-5-oxovalerate

Ethyl 8-oxodecanoate

Ethyl 7,7-dimethyl-6-oxooctanoate

Ethyl 5-oxononanoate

Ethyl 5-oxo-5-(2-pyridyl)valerate

Ethyl 4-(2-oxo-2-phenylethyl)benzoate

Ethyl 3-(2-oxo-2-phenylethyl)benzoate

ethyl 7-(3,4-dichlorophenyl)-7-oxoheptanoate

Ethyl 4-(4-bromo-2-methylphenyl)-4-oxobutyrate

ethyl 5-(4-bromo-2-methylphenyl)-5-oxovalerate

Ethyl 8-(4-iodophenyl)-8-oxooctanoate

ethyl 8-(3-nitrophenyl)-8-oxooctanoate

Ethyl 4-oxo-4-(2-trifluoromethylphenyl)butyrate

ethyl 8-oxo-8-(3-trifluoromethylphenyl)octanoate

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