Novel norbornyl-ferrocene hybrids have been synthesized in excellent yields via Diels-Alder reactions between 1,2,3,4-tetrahalo-5,5- dimethoxycyclopentadiene and vinyl-or acryloylferrocenes. Halogen reduction of vinylferrocene adducts followed by catalytic hydrogenation afforded ferrocenyl-norbornane. Hybrids showed the dependence of the redox potential on the nature of the substituents on the norbornyl moiety. © Georg Thieme Verlag Stuttgart.