Production of bridged metallocene complexes and intermediates therefor
    4.
    发明授权
    Production of bridged metallocene complexes and intermediates therefor 失效
    制备桥连金属茂配合物及其中间体

    公开(公告)号:US5710299A

    公开(公告)日:1998-01-20

    申请号:US672128

    申请日:1996-06-27

    摘要: Bridged metallocene compounds are produced by a process of promising commercial utility for plant-sized operations. The overall process involves the direct conversion of benzoindanones to benzoindanols which, without isolation, are converted to benzoindenes. Thereupon the benzoindenes are bridged by deprotonating the benzoindenes with a strong base such as butyllithium and reacting the resultant deprotonated product with a suitable silicon-, germanium- or tin-containing bridging reactant such as dichlorodimethylsilane. The resultant bridged product is deprotonated with a strong base such as butyllithium and reacted with a suitable Group IV, V, or VI metal-containing reactant such as ZrCl.sub.4 to provide a silicon-, germanium- or tin-bridged Group IV, V, or VI metal complex, such as a dihydrocarbylsilyl-bridged zirconocene complex. The initial benzoindenones used in such sequence can be formed readily and in high yield by reaction of a 2-haloacyl halide with naphthalenes unsubstituted in at least the 1- and 2-positions.

    摘要翻译: 桥接的茂金属化合物是通过有希望的用于植物大小的操作的商业应用的方法生产的。 整个方法包括将苯并二氢醌直接转化为苯并二醇,其不经分离转化成苯并茚基。 因此,苯并茚基通过用强碱如丁基锂对苯并茚进行去质子化来桥接,并使得到的去质子化产物与合适的含硅,锗或锡的桥连反应物如二氯二甲基硅烷反应。 所得的桥连产物用强碱如丁基锂去质子化并与合适的含IV,V或VI族金属的反应物如ZrCl 4反应以提供硅,锗或锡桥连的IV族V,或 VI金属络合物,例如二烃基甲硅烷基桥接的茂锆复合物。 在这种顺序中使用的初始苯并茚酮可以通过2-卤代酰卤与至少1位和2位未取代的萘反应而容易地且高产率地形成。