Ethyl 4-cyclopropyl-2,4-dioxobutanoate
Methyl 4-(2-methoxyphenyl)-2,4-dioxobutanoate
Ethyl 4-(4-chlorophenyl)-2,4-dioxobutanoate
Ethyl 4-(1-naphthyl)-2,4-dioxobutanoate
Methyl 4-(4-methoxyphenyl)-2,4-dioxobutanoate
Methyl 4-(3-methoxyphenyl)-2,4-dioxobutanoate
Methyl 4-Cyclopropyl-2,4-dioxobutanoate
Methyl 4-(2-bromophenyl)-2,4-dioxobutanoate
Ethyl 4-(5-fluoro-2-methoxyphenyl)-2,4-dioxobutanoate
Methyl 4-(3,4-dichlorophenyl)-2,4-dioxobutanoate
Methyl 4-(1-benzofuran-2-yl)-2,4-dioxobutanoate
