(η-1-ethyl-2-phenyl-1H-1,2-azaborolyl)(η-pentamethylcyclopentadienyl)zirconium(IV) dichloride | 615253-76-4

• 英文名称: (η-1-ethyl-2-phenyl-1H-1,2-azaborolyl)(η-pentamethylcyclopentadienyl)zirconium(IV) dichloride
• CAS: 615253-76-4
• 化学式: C₂₁H₂₈BCl₂NZr
• 分子量: 467.401
• InChiKey: HPYLWHXNHGELPI-UHFFFAOYSA-L

反应信息

• 作为产物：
  描述：

  pentamethylcyclopentadienylzirconium(IV) trichloride 、 lithium 1-ethyl-2-phenyl-1H-1,2-azaborolide 以 乙醚 为溶剂， 以56%的产率得到(η-1-ethyl-2-phenyl-1H-1,2-azaborolyl)(η-pentamethylcyclopentadienyl)zirconium(IV) dichloride
  参考文献：
  名称：

  Bridged 1,2-azaborolyl zirconium complexes: Heterocyclic analogs of the ansa-zirconocene olefin polymerization catalysts

  摘要：

  The reaction of phenylvinylboron chloride (11) with allylethylamine afforded (N-allyl-N-ethylamino)vinylphenylborane (12) which on treatment with 5 mol% Grubbs catalyst gave 1-ethyl-2,5-dihydro-2-phenyl-1H-1,2-azaborole (13). The reaction of 13 with LDA in ether gave lithium 1-ethyl-2-phenyl-1H-1,2-azaborolide (14), which was silylated with Me2SiCl2 to afford 15. Reaction of 15 with CpLi followed by LDA and then ZrCl4 gave bridged compound 9. The reaction of 15 with 14 followed by LDA and then ZrCl4 gave the bridged complex 10. The reaction of 14 with Cp*ZrCl3 gave 8. The X-ray crystal structures of 8, 9, and 10 show that they closely resemble the corresponding zirconocene dichlorides. On activation with excess methylaluminoxane 8, 9, and 10 form active catalysts from the polymerization of ethylene. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.poly.2005.03.001