Ethyl 4-[4-(N,N-Dimethylamino)phenyl]-4-oxobutanoate

Ethyl 8-(5-Chloro-2-methoxyphenyl)-8-oxooctanoate

Ethyl 7-(2-Chloro-4,5-difluorophenyl)-7-oxoheptanoate

Ethyl 4-(3,4,5-trimethoxyphenyl)-4-oxobutanoate

Ethyl 8-(2,4,5-trimethoxyphenyl)-8-oxooctanoate

Ethyl 5-[2-(Methylthio)phenyl]-5-oxovalerate

Ethyl 5-(3-Bromo-2-thienyl)-5-oxovalerate

Ethyl 4-(2,4,6-Trimethylphenyl)-4-oxobutanoate

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

Ethyl 5-(5-Fluoro-2-methoxyphenyl)-5-oxovalerate

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