ethyl 7-(1-naphthyl)-7-oxoheptanoate

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

ethyl 7-(2,4-difluorophenyl)-7-oxoheptanoate

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

Ethyl 6-(3-cyanophenyl)-6-oxohexanoate

Ethyl 4-(4-biphenyl)-4-oxobutyrate

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

Ethyl 4-cyclopentyl-4-oxobutyrate

ethyl 7-cyclohexyl-7-oxoheptanoate

Ethyl 8-cyclopentyl-8-oxooctanoate

Ethyl 8-oxodecanoate