Process for cyclopentadiene substitution with groups differing from each
other
    2.
    发明授权
    Process for cyclopentadiene substitution with groups differing from each other 失效
    用彼此不同的基团进行环戊二烯取代的方法

    公开(公告)号:US6063948A

    公开(公告)日:2000-05-16

    申请号:US184064

    申请日:1998-11-02

    摘要: Polysubstituted cyclopentadiene compound wherein at least two different substituents are present from the group consisting of linear, branched and cyclic alkyls, aralkyls and alkenyls, and a process for the preparation of a cyclopentadiene compound substituted with at least two different groups chosen from the group consisting of linear, branched, cyclic and aromatic alkyls and alkenyls, characterized in that it comprises the reacting of a halide of a first substituting group in a mixture of the cyclopentadiene compound and an aqueous solution of a base, in which the quantity of the base relative to the cyclopentadiene compound is between 5 and 30 mol/mol, in the presence of a phase transfer catalyst, followed by the addition of a halide of a second or optionally a third substituting group to the reaction mixture.

    摘要翻译: 多取代的环戊二烯化合物,其中至少两个不同的取代基存在于由直链,支链和环状烷基,芳烷基和烯基组成的组中,以及用于制备被至少两个不同基团取代的环戊二烯化合物的方法,所述不同基团选自 直链,支链,环状和芳族的烷基和烯基,其特征在于它包括第一取代基的卤化物与环戊二烯化合物的混合物与碱的水溶液的反应,其中碱的量相对于 在相转移催化剂存在下,环戊二烯化合物为5至30mol / mol,然后向反应混合物中加入第二或任选的第三取代基团的卤化物。

    Process for cyclopentadiene substitution
    5.
    发明授权
    Process for cyclopentadiene substitution 失效
    环戊二烯取代方法

    公开(公告)号:US06232516B1

    公开(公告)日:2001-05-15

    申请号:US08850930

    申请日:1997-05-02

    IPC分类号: C07C286

    摘要: The process for the preparation of a selectively substituted cyclopentadiene compound which includes reacting a halide of a substituting compound in a mixture of the cyclopentadiene compound and an aqueous solution of a base in the presence of a phase transfer catalyst, wherein during the reaction the quantity of base relative to the cyclopentadiene compound may at any moment be between 5 and 30 mol/mol.

    摘要翻译: 制备选择性取代的环戊二烯化合物的方法,其包括在相转移催化剂存在下使取代化合物的卤化物与环戊二烯化合物的混合物和碱的水溶液反应,其中在反应期间, 相对于环戊二烯化合物的碱可以在5至30mol / mol之间。

    Catalyst composition comprising a reduced transition metal complex and a cocatalyst
    8.
    发明授权
    Catalyst composition comprising a reduced transition metal complex and a cocatalyst 有权
    包含还原过渡金属络合物和助催化剂的催化剂组合物

    公开(公告)号:US06489261B1

    公开(公告)日:2002-12-03

    申请号:US09583914

    申请日:2000-05-31

    IPC分类号: B01J3100

    摘要: Catalyst compositions include a reduced transition metal complex of structure (I) and a cocatalyst. where, L1 and L2, may be the same or different, are anionic ligands, other than cyclopentadienyl group, amido group or phosphidino group. At least L1 is able to non-covalently interact with reduced transition metal M via one or more functional groups; for example, L1 can be a phenyl group in which at least one of the ortho-positions is substituted with a functional group capable of donating electron density to the transition metal M. L1 can also be a methyl group in which one or more or the alpha-positions is substituted with a functional group capable of donating electron density to the transition metal M. X, K, and m are defined in the specification. These catalysts may be easily formed as solids and provide improved catalytic performance.

    摘要翻译: 催化剂组合物包括结构(I)的还原过渡金属络合物和助催化剂。其中,L1和L2可以相同或不同,是除了环戊二烯基,酰胺基或磷酰基之外的阴离子配体。 至少L1能够通过一个或多个官能团与还原的过渡金属M非共价相互作用; 例如,L1可以是其中至少一个邻位被能够向过渡金属M提供电子密度的官能团取代的苯基.L1也可以是甲基,其中一个或多个或 α位置被能够向过渡金属M提供电子密度的官能团取代.X,K和m在说明书中定义。 这些催化剂可以容易地形成为固体并提供改进的催化性能。