| 78068-01-6

• CAS: 78068-01-6
• 化学式: C₁₂H₃₆Cl₆P₄Zr₂
• 分子量: 699.479
• InChiKey: AXJTXOPBYCPYBL-UHFFFAOYSA-H

反应信息

• 作为产物：
  描述：

  在 lithium 作用下， 以 甲苯 为溶剂， 生成
  参考文献：
  名称：

  Divalent ansa-Zirconocenes:  Stereoselective Synthesis and High Activity for Propylene Polymerization

  摘要：

  The reduction of ZrCl4(PR3)2 with Li powder, in the presence of a stoichiometric amount of trans-1,4-diphenyl-1,3-butadiene, affords the Zr(II) diene complexes (1) in 90-93% yields. This reaction consists of a rate-limiting step for the formation of the chloride-bridged Zr(III) dimer (2) and a fast diene-driven disproportionation of 2 to 1 and ZrCl4(PR3)2 that re-enters the reduction cycle. The reaction of 1 with Li2{Me2Si(2-Me-4-Ph-Ind)2} in toluene produces quantitatively the desired racemic, divalent ansa-zirconocene (3) that is a highly active isospecific propylene polymerization catalyst upon activation with common activators.

  DOI：

  10.1021/ja0381611