申请人:Equistar Chemicals, L.P.
公开号:US06410764B1
公开(公告)日:2002-06-25
A process for preparing boratabenzene derivatives is provided. The process includes the hydrogenation of a compound containing a boranaphthalene functional group to form a boratabenzene-containing compound. Depending on the compound containing a boranaphthalene functional group, the resulting boratabenzene compound may be converted into a catalyst suitable for olefin polymerization. A process for forming a boratabenzene derivative from a halo-dioxaborolane is also provided. In this process, a halo-dioxaborolane is reacted with a piperylide salt for form a pentadienyl dioxaborolane. The pentadienyl-dioxaborolane is reacted with a strong base to form an intermediate boratacyclohexanediene salt. The intermediate boratacyclohexanediene salt is then reacted with a trialkylaluminum compound to form an alkylboratabenzene salt.
提供了一种制备硼代苯衍生物的过程。该过程包括对含有硼萘基团的化合物进行加氢,形成含有硼代苯基团的化合物。根据含有硼萘基团的化合物,所得的硼代苯化合物可以转化为适用于烯烃聚合的催化剂。还提供了一种从卤代二氧硼杂环烷形成硼代苯衍生物的过程。在这个过程中,卤代二氧硼杂环烷与哌啶盐反应,形成戊二烯基二氧硼杂环烷。戊二烯基二氧硼杂环烷与强碱反应,形成中间体硼代环己二烯基盐。然后,中间体硼代环己二烯基盐与三烷基铝化合物反应,形成烷基硼代苯盐。