Process for the preparation of bridged, chiral metallocene catalysts of the bisindenyl type

摘要

A process for the preparation of a compound of the formula III <IMAGE> (III) comprising, deprotonating a solution or suspension of an indene of the formula I <IMAGE> (I) in a solvent or solvent mixture containing a base to give a suspension of a metallated product of the compound of formula I, adding to the suspension of the metallated product a compound of the formula II X-R6-X(II) and reacting the suspension of the metallated product and compound of the formula II.