申请人:Hoechst Aktiengesellschaft
公开号:US05194619A1
公开(公告)日:1993-03-16
The compounds of the formula I or Ia ##STR1## in which R.sup.1 is alkyl, aryl, alkoxy, alkenyl, arylalkyl, alkylaryl, aryloxy, fluoroalkyl, halogenoaryl, alkynyl, trialkylsilyl or a heteroaromatic radical, R.sup.2, R.sup.3 and R.sup.4, in addition to hydrogen, have the meanings given under R.sup.1 and R.sup.5 is hydrogen, alkyl, fluoroalkyl or alkenyl, can be obtained in a one-stage process by reaction of a compound II ##STR2## with (substituted) cyclopentadiene in the presence of a base. The compounds I and Ia are suitable as ligands for metallocene complexes which are used as catalysts in olefin polymerization.
公式I或Ia的化合物##STR1##中,其中R.sup.1是烷基、芳基、烷氧基、烯基、芳基烷基、烷基芳基、芳氧基、氟烷基、卤代芳基、炔基、三烷基硅基或杂芳基,R.sup.2、R.sup.3和R.sup.4除了氢外,具有R.sup.1给定的含义,R.sup.5是氢、烷基、氟烷基或烯基,可以通过将化合物II##STR2##与(取代)环戊二烯在碱存在下反应而在一步过程中获得。化合物I和Ia适用作为配位基,用作烯烃聚合催化剂的茂金属配合物。