Dienyl complexes of transition metals. Part I. The addition of hydride to methyl-substituted arenecyclopentadienyliron cations

Abstract

The addition of hydride to a series of methyl-substituted arenecyclopentadienyliron cations has been shown to occur exclusively at the arene ring, giving π-cyclohexadienyl derivatives. The methyl substituents influence the mode of reaction only insofar as hydride addition to an unsubstituted arene carbon is preferred. The 1H n.m.r. spectra of these compounds are discussed.