Process for the preparation of cyclopentadienyl compounds and compounds obtained therefrom
    19.
    发明授权
    Process for the preparation of cyclopentadienyl compounds and compounds obtained therefrom 失效
    制备环戊二烯基化合物和由其获得的化合物的方法

    公开(公告)号:US06388118B1

    公开(公告)日:2002-05-14

    申请号:US09536357

    申请日:2000-03-27

    IPC分类号: C07F708

    摘要: A process is disclosed for preparing bis-cyclopentadienyl compounds bridged by a single carbon atom by reacting a carbonyl compound with a cyclopentadienyl compound in the presence of a base and of an oxygen-containing solvent having an atomic ratio carbon/oxygen not higher than 3. The compounds obtainable in high yields with this simple single-step process can be used to prepare ansa-metallocenes which are active as catalyst components in the polymerization of olefins.

    摘要翻译: 公开了一种制备通过羰基化合物与环戊二烯基化合物在碱存在下和原子比碳/氧不高于3的含氧溶剂反应由单个碳原子桥连的双环戊二烯基化合物的方法。 通过这种简单的单步骤方法可以高产率获得的化合物可用于制备在烯烃聚合中作为催化剂组分起作用的硫化金属茂。