ethyl 5-(4-bromo-2-methylphenyl)-5-oxovalerate

ethyl 8-oxo-8-(4-n-pentylphenyl)octanoate

ethyl 5-(4-hexylphenyl)-5-oxovalerate

ethyl 8-(4-hexylphenyl)-8-oxooctanoate

ethyl 8-oxo-8-(4-n-propoxyphenyl)octanoate

ethyl 4-oxo-4-(4-pentyloxyphenyl)butyrate

ethyl 5-(4-hexyloxyphenyl)-5-oxovalerate

ethyl 5-(4-heptyloxyphenyl)-5-oxovalerate

ethyl 6-(2,3-dimethoxyphenyl)-6-oxohexanoate

Ethyl 7-(2,4-dimethoxyphenyl)-7-oxoheptanoate

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