ethyl 6-(2-iodophenyl)-6-oxohexanoate

Ethyl 5-(4-iodophenyl)-5-oxovalerate

Ethyl 6-(3-nitrophenyl)-6-oxohexanoate

Ethyl 5-(4-nitrophenyl)-5-oxovalerate

Ethyl 5-oxo-5-(4-trifluoromethylphenyl)valerate

ethyl 7-oxo-7-(4-trifluoromethylphenyl)heptanoate

Ethyl 5-(2,4-dichlorophenyl)-5-oxovalerate

ethyl 4-(4-ethylphenyl)-4-oxobutyrate

ethyl 4-(4-isopropylphenyl)-4-oxobutyrate

ethyl 6-(4-t-butylphenyl)-6-oxohexanoate

Ethyl 4-oxo-4-(4-n-pentylphenyl)butyrate