The invention relates to a process for preparing hydrogenated or partially hydrogenated, racemic ansa-metallocene complexes by reacting bridged or unbridged transition metal complexes with alkali metal compounds or alkaline earth metal compounds, heating the resulting reaction mixture to a temperature in the range from -78 to 250°C and at least partially hydrogenating the reaction products in the presence of a suitable catalyst, to the corresponding hydrogenated or partially hydrogenated metallocenes and to their use as catalysts or as a constituent of catalysts for the polymerization of olefinically unsaturated compounds or as reagents or catalysts in stereoselective synthesis.
该发明涉及一种制备氢化或部分氢化、消旋的ansa-
金属茂配合物的方法,通过将桥联或非桥联的过渡
金属配合物与碱
金属化合物或碱土
金属化合物反应,将所得的反应混合物加热至-78至250°C范围内的温度,并在适当催化剂存在下至少部分地对反应产物进行氢化,得到相应的氢化或部分氢化的茂
金属烯,并将其用作催化剂或催化剂组分,用于聚合烯烃不饱和化合物或立体选择性合成中的试剂或催化剂。