ethyl 6-(2,3-difluorophenyl)-6-oxohexanoate

ethyl 8-(2,5-difluorophenyl)-8-oxooctanoate

Ethyl 7-(3-cyanophenyl)-7-oxoheptanoate

ethyl 6-(4-biphenyl)-6-oxohexanoate

Ethyl 2,2-dimethyl-4-(4-methoxyphenyl)-4-oxobutyrate

Ethyl 8-cyclohexyl-8-oxooctanoate

Ethyl 8-cyclopentyl-8-oxooctanoate

Ethyl 6,6-dimethyl-5-oxoheptanoate

Ethyl 7-oxododecanoate

Ethyl 6-oxoundecanoate

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

Ethyl 2-(2-oxopropyl)benzoate

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

ethyl 5-(3-bromo-4-methylphenyl)-5-oxovalerate

ethyl-8-methyl-7-oxononanoate