Optisch aktive Übergangsmetall-Komplexe, 97 [1] C5H5Fe(CO)(COMe)-Derivate von Glyphos und Diop / Optically Active Transition Metal Complexes, 97 [1] C5H5Fe(CO)(COMe) Derivatives of Glyphos and Diop

Abstract

The reaction of CpFe(CO)2Me with (+)-Glyphos and (–)-Diop yields the monosubstitution products 1 and 2, which consist of pairs of diastereomers, differing only in the Fe configuration. With (–)-Diop, additionally dinuclear complexes are formed in which Diop acts as a bridging ligand. The diastereomers can be separated by column chromatography. At higher temperatures the complexes epimerize in solution with respect to the Fe configuration. The formation of free phosphine and CpFe(CO)2Me indicates a dissociative mechanism.