ethyl 7-(3,5-ditrifluoromethylphenyl)-7-oxoheptanoate

ethyl 6-(3,5-dimethyl-4-methoxyphenyl)-6-oxohexanoate

ethyl 7-(3-methylphenyl)-7-oxoheptanoate

ethyl 7-(3,5-dimethylphenyl)-7-oxoheptanoate

ethyl 6-(3-chlorophenyl)-6-oxohexanoate

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

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

Ethyl 5-oxo-5-(9-Phenanthryl)valerate

Ethyl 8-oxo-8-(9-Phenanthryl)octanoate

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

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