Ethyl 4-(2-naphthyl)-4-oxobutyrate

ethyl 8-(2-fluorophenyl)-8-oxooctanoate

Ethyl 4-(3,5-difluorophenyl)-2,2-dimethyl-4-oxobutyrate

Ethyl 5-cyclopentyl-5-oxovalerate

Ethyl 8-cyclobutyl-8-oxooctanoate

Ethyl 5-oxoheptanoate

Ethyl 7-oxoundecanoate

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

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

ethyl 4-(3,5-dimethylphenyl)-2-methyl-4-oxobutyrate

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