Ethyl 4-(2-methylphenyl)-4-oxobutyrate

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

ethyl 4-oxo-4-(3-phenoxyphenyl)butyrate

ethyl 5-oxo-5-(4-thiomethylphenyl)valerate

Ethyl 6-oxo-6-(9-Phenanthryl)hexanoate

ethyl 7-(2,3-difluorophenyl)-7-oxoheptanoate

ethyl 6-(2-fluorophenyl)-6-oxohexanoate

Ethyl 4-(3-cyanophenyl)-4-oxobutyrate

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

Ethyl 4-cyclohexyl-4-oxobutyrate

ethyl 6-cyclopentyl-6-oxohexanoate