Ethyl 5,5-dimethyl-4-oxohexanoate

Ethyl 7-oxononanoate

Ethyl 6-oxodecanoate

Ethyl 6-oxoundecanoate

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

ethyl 2-(2-oxo-2-phenylethyl)benzoate

Ethyl 3-(1-oxo-2-phenylethyl)benzoate

ethyl 6-(3,4-dichlorophenyl)-6-oxohexanoate

Ethyl 4-(3-bromo-4-methylphenyl)-4-oxobutyrate

Ethyl 5-methyl-4-oxohexanoate

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

Ethyl 7-methyl-6-oxooctanoate

Ethyl 8-(3-iodophenyl)-8-oxooctanoate

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

ethyl 5-oxo-5-(2-trifluoromethylphenyl)valerate