ethyl 5-(3,4-difluorophenyl)-5-oxovalerate

ethyl 7-(2,4-difluorophenyl)-7-oxoheptanoate

Ethyl-5-(3-cyanophenyl)-5-oxovalerate

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

ethyl 2,2-dimethyl-4-(3-fluorophenyl)-4-oxobutyrate

Ethyl 6-cyclobutyl-6-oxohexanoate

Ethyl 5,5-dimethyl-4-oxohexanoate

Ethyl 9,9-dimethyl-8-oxodecanoate

Ethyl 4-oxoheptanoate

Ethyl 4-oxo-4-(2-pyridyl)butyrate

Ethyl 3-(2-oxopropyl)benzoate