Ethyl 5-cyclopropyl-5-oxovalerate

Ethyl 8-(3-iodophenyl)-8-oxooctanoate

ethyl 8-(3-nitrophenyl)-8-oxooctanoate

ethyl 5-oxo-5-(2-trifluoromethylphenyl)valerate

Ethyl 4-oxo-4-(4-trifluoromethylphenyl)butyrate

Ethyl 8-oxo-8-(4-trifluoromethylphenyl)octanoate

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

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

ethyl 5-(4-t-butylphenyl)-5-oxovalerate

ethyl 8-oxo-8-(4-n-pentylphenyl)octanoate

ethyl 5-(4-hexylphenyl)-5-oxovalerate