Organometallic complexes in synthesis. Part IV. Abstraction of hydride from some tricarbonylcyclohexa-1,3-dieneiron complexes and reactions of the complexed cations with some nucleophiles

Abstract

Isomeric 1- and 2-methoxy-derivatives of tricarbonylcyclohexa-1,3-dieneiron can frequently be separated by chromatography. The positions of removal of hydride from such complexes, relative to OMe and/or Me sub-stituents, have been examined. Some of the resulting mesomeric cations have been treated with the nucleophiles borohydride, hydroxide, and morpholine to define positions of reaction relative to substitution. Among other nucleophiles which react are enamines and ketones. Conditions for removal of the tricarbonyliron group from the resulting complexes have been examined.