申请人:Montell Technology Company bv
公开号:US06043403A1
公开(公告)日:2000-03-28
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.
公开了一种制备以单个碳原子桥接的双环戊二烯基化合物的方法,包括在存在碱和具有碳/氧原子比不超过3的含氧溶剂的情况下,将一种羰基化合物与一种环戊二烯基化合物反应。通过这种简单的一步法可以得到高收率的化合物,可用于制备作为催化组分在烯烃聚合中起活性的 ansa-金属烯。