2,2-Dimethyl-4-(2,4-dimethylphenyl)-4-oxobutyric acid

ethyl 7-(2-bromophenyl)-7-oxoheptanoate

Ethyl 5-(2-methylphenyl)-5-oxovalerate

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

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

ethyl 6-(3,5-dichlorophenyl)-6-oxohexanoate

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

Ethyl 5-oxo-5-(3,4,5-trifluorophenyl)valerate

ethyl 4-oxo-4-(4-phenoxyphenyl)butyrate

ethyl 4-oxo-4-(4-thiomethylphenyl)butyrate

ethyl 8-(2-naphthyl)-8-oxooctanoate