rac-ethylenebis(tetrahydro-1-indenyl)zirconium 1.1-bi-2-naphtholate | 133868-91-4

• 英文名称: rac-ethylenebis(tetrahydro-1-indenyl)zirconium 1.1-bi-2-naphtholate
• 英文别名: ethylenebis(indenyl)zirconium(IV) binolate；ethylene-1,2-bis(η(5)-4,5,6,7-tetra-hydro-1-indenyl)zirconium(IV) 1,1'-binaphthyl-2,2'-diolate
• CAS: 133868-91-4
• 化学式: C₄₀H₃₆O₂Zr
• 分子量: 639.949
• InChiKey: RENWIQQXMVJPLQ-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为反应物：
  描述：

  正丁基锂 、 rac-ethylenebis(tetrahydro-1-indenyl)zirconium 1.1-bi-2-naphtholate 以 四氢呋喃 为溶剂， 生成
  参考文献：
  名称：

  Synthesis of Heterocycles Using Zirconium-Catalyzed Asymmetric Diene Cyclization

  摘要：

  DOI：

  10.1021/ja964462h
• 作为产物：
  描述：

  (S)-[EBTHI]ZrCl2 、 S-1,1'-联-2-萘酚 在 三乙胺 作用下， 以 甲苯 为溶剂， 以70%的产率得到rac-ethylenebis(tetrahydro-1-indenyl)zirconium 1.1-bi-2-naphtholate
  参考文献：
  名称：

  Ethene/propene copolymerisations with rac-EBTHIZrR2/alumoxane: σ-ligands effect

  摘要：

  We report here about the role played by the a-ligands of a metallocene in ethene/propene (E/P) copolymerisations promoted by rac-[ethylenebis(4,5,6,7-tetrahydro-1-indenyl)]zirconium dichloride i, and its corresponding dimethyl derivative rac-EBTHIZrMe2 2 and binaphtholate rac-EBTHIZr(BNP) 3 derivative, in the presence of several alumoxanes,Alumoxanes alternative to the traditional polymethylalumoxane (MAO) were synthesised and characterised. They are based on Al(2,4,4-trimethylpentyl)3 (TIOA) 4 and were prepared by reaction of 4 with water to give either tetraisooctylalumoxane (TIOAO) 5 or polyisooctylalumoxane (TAO) 6 depending on the stoichiometry of the reaction. H-1 NMR spectra of these products are characterised by the presence of broad bands and of resolved multiplets. Their relative amount in the region between 1.9 and 2.5 ppm was identified as the "fingerprint" of the polymerisation activity. A comparison of the results obtained in polymerisation with metallocenes having different sigma-ligands allowed us to shed more light on the role played by those species.In conclusion, the nature of the sigma-ligands of a metallocene affects its catalytic activity in polymerisation, as a function of the alumoxane employed and of the relative ratio with the metallocene, and this effect is enhanced in "critical conditions," i.e. with a weakly activating cocatalyst or at a low Al/Zr ratio. (C) 2000 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s1381-1169(00)00215-6