Ethyl 4-(2-Chloro-6-fluorophenyl)-4-oxobutanoate

Ethyl 8-(4-n-Propylphenyl)-8-oxooctanoate

Ethyl 7-(4-n-Butylphenyl)-7-oxoheptanoate

Ethyl 4-[4-(Ethylthio)phenyl]-4-oxobutanoate

Ethyl 4-(4-tert-Butyl-2,6-dimethylphenyl)-4-oxobutanoate

Ethyl 4-(2,3,4,5,6-Pentamethylphenyl)-4-oxobutanoate

Ethyl 4-(4-Methoxy-2-methylphenyl)-4-oxobutanoate

Ethyl 4-(2-Methoxy-5-methylphenyl)-4-oxobutanoate

Ethyl 5-(4-Methoxy-3-methylphenyl)-5-oxovalerate

Ethyl 5-(4-Chloro-3-fluorophenyl)-5-oxovalerate

ethyl 5-(2-chlorophenyl)-5-oxovalerate