ethyl 2,2-dimethyl-4-oxo-4-(3,4,5-trifluorophenyl)butyrate

Ethyl 5-cyclohexyl-5-oxovalerate

ethyl 6-cyclopentyl-6-oxohexanoate

Ethyl 6-cyclopropyl-6-oxohexanoate

Ethyl 8-oxododecanoate

Ethyl 6-oxononanoate

Ethyl 5-oxo-6,6,6-trifluorohexanoate

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

Ethyl 3-(2-oxopropyl)benzoate

ethyl 7-(3-bromo-4-methylphenyl)-7-oxoheptanoate

ethyl 7-(4-bromo-2-methylphenyl)-7-oxoheptanoate

Ethyl 4-(2-iodophenyl)-4-oxobutyrate

ethyl 5-(3-iodophenyl)-5-oxovalerate

ethyl 7-(4-iodophenyl)-7-oxoheptanoate

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