(pentafluorophenyl)zirconocene dichloride | 602335-53-5

• 英文名称: (pentafluorophenyl)zirconocene dichloride
• CAS: 602335-53-5
• 化学式: C₁₆H₉Cl₂F₅Zr
• 分子量: 458.369
• InChiKey: ODJXXJCUXCPEAZ-UHFFFAOYSA-L

反应信息

• 作为反应物：
  描述：

  (pentafluorophenyl)zirconocene dichloride 、 甲基锂 以 甲苯 为溶剂， 以86%的产率得到(pentafluorophenyl)zirconocene dimethide
  参考文献：
  名称：

  Analysis of Metallocene−Methylalumoxane Methide Transfer Processes in Solution Using a ¹⁹F NMR Spectroscopic Probe

  摘要：

  The metallocenes (C6F5C5H4)CpZrMe2 (1, Cp = C5H5) and (C6F5C5H4)(2)MMe2 (2a, M = Zr; 2b, M = Hf) were treated with B(C6F5)(3) and, separately, with commercial methylalumoxane (MAO, depleted of excess Me3Al). The ensuing methide transfer reactions were followed by F-19 NMR. Spectra of the "activated" species obtained using MAO and excess B(C6F5)3 were strikingly similar, suggesting that similar "cation-like" species are formed using either organo-Lewis acid, and the MAO-activated species were tentatively formulated as (C6F5C5H4)CpZrMe+ Me[AlMeO](n)(-) and as (C6F5C5H4)(2)MMe+ Me[AlMeO](n)(-) (M = Zr, Hf). The relative amount of L2MMe2 and [L2MMe](+) species observed in solution was measured as a function of [MAO] and as a function of [M] at constant [MAO]. Results are interpreted in terms of a canonical model in which MAO contains relatively few highly active Lewis acidic sites.

  DOI：

  10.1021/om030171n
• 作为产物：
  描述：

  (η5-cyclopentadienyl)trichlorozirconium(dimethoxyethane) 、 sodium (pentafluorophenyl)cyclopentadienide 以 甲苯 为溶剂， 以76%的产率得到(pentafluorophenyl)zirconocene dichloride
  参考文献：
  名称：

  Analysis of Metallocene−Methylalumoxane Methide Transfer Processes in Solution Using a ¹⁹F NMR Spectroscopic Probe

  摘要：

  The metallocenes (C6F5C5H4)CpZrMe2 (1, Cp = C5H5) and (C6F5C5H4)(2)MMe2 (2a, M = Zr; 2b, M = Hf) were treated with B(C6F5)(3) and, separately, with commercial methylalumoxane (MAO, depleted of excess Me3Al). The ensuing methide transfer reactions were followed by F-19 NMR. Spectra of the "activated" species obtained using MAO and excess B(C6F5)3 were strikingly similar, suggesting that similar "cation-like" species are formed using either organo-Lewis acid, and the MAO-activated species were tentatively formulated as (C6F5C5H4)CpZrMe+ Me[AlMeO](n)(-) and as (C6F5C5H4)(2)MMe+ Me[AlMeO](n)(-) (M = Zr, Hf). The relative amount of L2MMe2 and [L2MMe](+) species observed in solution was measured as a function of [MAO] and as a function of [M] at constant [MAO]. Results are interpreted in terms of a canonical model in which MAO contains relatively few highly active Lewis acidic sites.

  DOI：

  10.1021/om030171n

文献信息

• Selective Halodemethylation Reactions of Metallocene Dimethyls with Triphenylmethyl Chloride and Benzyl Bromide
  作者：Eric J. Hawrelak、Paul A. Deck

  DOI：10.1021/om0305014

  日期：2004.1.1

  NMR-scale reactions of several group 4 metallocene dimethyls with either trityl chloride or benzyl bromide gave the corresponding L2M(Me)X complexes selectively. Five reactions, including syntheses of Cp2Zr(Me)Cl and Ind2Zr(Me)Cl, were conducted on a preparative scale to afford useful isolated yields of L2M(Me)Cl complexes.

  几种4号茂金属二甲基与三苯甲基氯或苄基溴的NMR规模反应选择性地产生了相应的L 2 M（Me）X络合物。在制备规模上进行了五个反应，包括Cp 2 Zr（Me）Cl和Ind 2 Zr（Me）Cl的合成，以提供有用的L 2 M（Me）Cl复合物的分离产率。