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

Ethyl 7-oxo-7-(3-phenoxyphenyl)heptanoate

ethyl 6-(1-naphthyl)-6-oxohexanoate

ethyl 8-(1-naphthyl)-8-oxooctanoate

Ethyl 7-oxo-7-(9-Phenanthryl)heptanoate

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

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

ethyl 7-(2-fluorophenyl)-7-oxoheptanoate

Ethyl 4-(2-fluorophenyl)-4-oxobutyrate

ethyl 7-(4-biphenyl)-7-oxoheptanoate

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