Ferrocenylmethylene containing ketones were achievedby the reactions of ferrocenecarboxaldehyde with compoundscontaining active methylene group, such as barbituric acid (2a), thiobarbituric acid (2b), 2,2-dimethyl-1,3-dioxane-4,6-dione (2c), 3-methyl-1-phenyl-2-pyrazoline-5-one (2d), ethyl cyanoacetate (2e), 2,4-pentandione (2f), cyclohexanone (2g) and cyclopentanone (2h) in aqueous solution with good yields. The structures of products were confirmed by ¹H NMR, ¹³C NMR, IR spectra and elemental analysis.

Key words: ferrocenecarboxaldehyde, active methylene group, condensation, aqueous reaction