ethyl 4-(2-methoxyphenyl)-4-oxobutyrate

ethyl 6-(1-naphthyl)-6-oxohexanoate

Ethyl 5-(2-naphthyl)-5-oxovalerate

Ethyl 5-(2,3-difluorophenyl)-5-oxovalerate

ethyl 6-(2-fluorophenyl)-6-oxohexanoate

ethyl 7-(2,6-difluorophenyl)-7-oxoheptanoate

Ethyl-5-(4-cyanophenyl)-5-oxovalerate

Ethyl 5-(4-biphenyl)-5-oxovalerate

Ethyl 5-cyclopentyl-5-oxovalerate

ethyl 7-cyclobutyl-7-oxoheptanoate

Ethyl 5,5-dimethyl-4-oxohexanoate

Ethyl 6-oxooctanoate

Ethyl 5-oxodecanoate

Ethyl 5-oxooctanoate

Ethyl 3-propionylbenzoate