diethyl 2-[(4-fluorophenyl)methylidene]propanedioate

ethyl 4-amino-2-oxo-1H-quinoline-3-carboxylate

methyl 2,4-dioxo-6-phenylcyclohexane-1-carboxylate

diethyl 2-phenyliminopropanedioate

diethyl 2-[4-(2-ethoxy-2-oxoethyl)-3-phenyl-1,3-thiazol-2-ylidene]propanedioate