Ethyl 5-(1-naphthyl)-5-oxovalerate

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

ethyl 8-(4-biphenyl)-8-oxooctanoate

ethyl 2,2-dimethyl-4-(3-methoxyphenyl)-4-oxobutyrate

ethyl 2,2-dimethyl-4-(2-naphthyl)-4-oxobutyrate

ethyl 7-cyclobutyl-7-oxoheptanoate

Ethyl 7-cyclopropyl-7-oxoheptanoate

ethyl 8,8-dimethyl-7-oxononanoate

Ethyl 7-oxododecanoate

Ethyl 5-oxononanoate

Ethyl 5-oxo-6,6,6-trifluorohexanoate