Ethyl 4-(3,5-difluorophenyl)-4-oxobutyrate

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

ethyl 6-(2-naphthyl)-6-oxohexanoate

ethyl 8-(2,4-difluorophenyl)-8-oxooctanoate

Ethyl 5-(2-fluorophenyl)-5-oxovalerate

Ethyl 6-(4-cyanophenyl)-6-oxohexanoate

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

Ethyl 8-cyclohexyl-8-oxooctanoate

Ethyl 4-cyclopropyl-4-oxobutyrate

Ethyl 7-oxononanoate

Ethyl 5-oxodecanoate