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发明授权
US5929264A Process for the preparation of substituted indenes and their use as ligand systems for metallocene catalysts 失效
制备取代茚的方法及其作为茂金属催化剂的配体体系的用途

Process for the preparation of substituted indenes and their use as ligand systems for metallocene catalysts
摘要：
The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R.sup.1 -R.sup.5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II ##STR3## in which X.sup.1 and X.sup.2 are preferably halogen, to give the corresponding indanones, which are converted into the compounds IV and IVa by reduction and dehydration. The compounds IV and IVa are important intermediate products for the preparation of chiral metallocene complexes which are suitable catalyst components for olefin polymerization.
摘要（中）：

本发明涉及制备式IV或IVa化合物的方法，其中R 1 -R 5优选为氢或烷基，其包括使化合物I与其中X 1和X 2优选为卤素的化合物II反应，得到 相应的茚满酮，通过还原和脱水转化成化合物IV和IVa。 化合物IV和IVa是制备用于烯烃聚合的合适的催化剂组分的手性茂金属络合物的重要中间产物。

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