2,2-Dimethyl-4-oxo-4-(2,3,4,5,6-pentamethylphenyl)butyric acid

5-(2-chlorophenyl)-5-oxovaleric acid

Ethyl 4-(4-bromophenyl)-4-oxobutyrate

Ethyl-6-(4-fluorophenyl)-6-oxohexanoate

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

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

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

Ethyl 4-(3,4-dimethylphenyl)-4-oxobutyrate

Ethyl 5-(2-bromophenyl)-5-oxovalerate

Ethyl 8-(3,5-dimethyl-4-methoxyphenyl)-8-oxooctanoate

Ethyl 6-(3-methylphenyl)-6-oxohexanoate