ethyl 6-(4-bromo-2-methylphenyl)-6-oxohexanoate

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

ethyl 8-(2-ethoxyphenyl)-8-oxooctanoate

Ethyl 4-(4-ethoxyphenyl)-4-oxobutyrate

Ethyl 7-oxo-7-(4-isopropoxyphenyl)heptanoate