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

Ethyl 5-oxo-5-(4-pyridyl)valerate

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

Ethyl 3-(2-oxopropyl)benzoate

ethyl 3-methyl-5-oxo-5-phenylvalerate

ethyl 8-(3-bromo-4-methylphenyl)-8-oxooctanoate

ethyl 8-(4-bromo-2-methylphenyl)-8-oxooctanoate

Ethyl 5-(2-iodophenyl)-5-oxovalerate

ethyl 7-(3-iodophenyl)-7-oxoheptanoate

Ethyl 5-(3-nitrophenyl)-5-oxovalerate

ethyl 7-(4-nitrophenyl)-7-oxoheptanoate