Ethyl 7-[3-(N,N-Dimethylamino)phenyl]-7-oxoheptanoate

Ethyl 6-(3,4,5-trichlorophenyl)-6-oxohexanoate

Ethyl 5-(2,3,4-trimethoxyphenyl)-5-oxovalerate

Ethyl 7-(4-n-Propylphenyl)-7-oxoheptanoate

Ethyl 4-(3-Bromo-2-thienyl)-4-oxobutanoate

Ethyl 5-[3,4-(methylenedioxy)phenyl]-5-oxovalerate

Ethyl 4-(4-Methoxy-2-methylphenyl)-4-oxobutanoate

ethyl 4-[4-(2-Methoxyethoxy)phenyl]-4-oxobutyrate

Ethyl 4-(2-chlorophenyl)-4-oxobutyrate

3-(1,3-dioxolan-2-ylmethyl)-1,2-dimethoxybenzene

4-(1,3-dioxolan-2-ylmethyl)-1-ethoxybenzene