Reactions of ferrocenyl chalcones with hydrazines and active methylene compounds

Claisen-Schmidt condensation of ferrocenecarboxaldehyde ( ) with 2-acetylfuran ( ) yielded -3-ferrocenyl-1-(2-furyl)prop-2-en-1-one ( ) together with 1,5-di(2-furyl)-3-ferrocenylpentane-1,5-dione ( ). Reactions of the ferrocenyl chalcones and with hydrazine hydrate, phenyl hydrazine, ethyl acetoacetate, ethyl cyanoacetate and malononitrile, were also studied. Possible reaction mechanisms were discussed and structures of the new products were unambiguously characterized by common analytical and spectroscopic methods.