PROCESS FOR OLIGOMERIZATION OF OLEFINS THAT USES A CATALYTIC COMPOSITION THAT COMPRISES AN ORGANOMETALLIC COMPLEX THAT CONTAINS A PHENOXY LIGAND THAT IS FUNCTIONALIZED BY A HETEROATOM
申请人:Cazaux Jean-Benoit
公开号:US20110213190A1
公开(公告)日:2011-09-01
The invention describes a process for oligomerization of the olefins into compounds or into a mixture of compounds of general formula CpH2p with 4≦p≦80 that implements a catalytic composition that comprises at least one organometallic complex of an element of group IV that is selected from among titanium, zirconium, or hafnium, whereby said organometallic complex contains at least one aryloxy-type (or phenyloxy-type) ligand that is functionalized by a heteroatom that is selected from among nitrogen, oxygen, phosphorus or sulfur or by an aromatic group.
synthesis of mono(aryloxido)titanium(IV) complexes of general formula Ti[O(o-R)Ar]X3}, with X = OiPr, ArO = 2-tert-butyl-4-methylphenoxy and R = CMe3 (2a), CMe2Ph (2b) and CH2NMe2 (2c). Attempts to reach pure mono(aryloxido) complexes when R = CH2NMe(CH2Ph) (2d) or CH2N(CH2Ph)2 (2e) were unsuccessful. When R = CH2OMe, the analogous mononuclear complex was not obtained, and instead, a dinuclear complex [(2
我们报告了通式 Ti[O(oR)Ar]X3} 的单(芳基氧化)钛(IV)配合物的合成,其中 X = OiPr,ArO = 2-叔丁基-4-甲基苯氧基,R = CMe3 (2a)、CMe2Ph (2b) 和 CH2NMe2 (2c)。当 R = CH2NMe(CH2Ph) (2d) 或 CH2N(CH2Ph)2 (2e) 时,尝试获得纯单(芳基氧化)配合物均未成功。当 R = CH2OMe 时,没有得到类似的单核配合物,取而代之的是双核配合物 [(2-叔丁基-4-甲基-6-甲氧基甲基苯氧基) TiCl(OiPr)(μ2-OiPr)2TiCl(OiPr)2] (3) 形成。配合物 2b 和 3 通过单晶 X 射线衍射表征。前者包含一个四面体配位的 TiIV 中心,而在后者中,芳基氧化配体充当这两个化学上非常不同的金属中心之间的螯合桥接配体,形成两个共享面的八面体。评估并讨论了从 [Ti(OiPr)4]