Process for the preparation of complexes between transition metals and mono-substituted cyclopentadienyl ligands

摘要

Disclosed is a process for the preparation of transition metal complexes having monosubstituted cyclopentadienyl ligands of the general formula: IMAGE in which monomeric cyclopentadiene is reacted with organic halides or pseudohalides, using a mixture of an alkali metal oxide or hydroxide and an alkaline earth metal oxide or hydroxide as metallating agent in glycol diether as solvent, to form the intermediate monosubstituted cyclopentadiene, which in situ is metallated and reacted with a transition metal halide to give the final product.