ethyl 4-oxo-4-(3-phenoxyphenyl)butyrate

ethyl 5-oxo-5-(3-phenoxyphenyl)valerate

Ethyl 6-(2-methoxyphenyl)-6-oxohexanoate

Ethyl 4-(2-naphthyl)-4-oxobutyrate

ethyl 5-(2,4-difluorophenyl)-5-oxovalerate

ethyl 6-(2,6-difluorophenyl)-6-oxohexanoate

Ethyl-5-(3-cyanophenyl)-5-oxovalerate

Ethyl-4-(4-cyanophenyl)-4-oxobutyrate

Ethyl 8-(4-cyanophenyl)-8-oxooctanoate

ethyl 7-cyclopentyl-7-oxoheptanoate

Ethyl 5-cyclobutyl-5-oxovalerate

Ethyl 8-oxodecanoate

Ethyl 7,7-dimethyl-6-oxooctanoate

Ethyl 5-oxononanoate

Ethyl 5-oxo-5-(2-pyridyl)valerate