bis(η4-2,3-dimethyl-1,3-butadiene)CrPMe2Ph | 136275-38-2

• 英文名称: bis(η4-2,3-dimethyl-1,3-butadiene)CrPMe2Ph
• CAS: 136275-38-2
• 化学式: C₂₀H₃₁CrP
• 分子量: 354.436
• InChiKey: FTOUAHXKYHBJHL-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  CrCl₂(THF) 、 2,3-二甲基-1,3-丁二烯 、 二甲基苯基磷 在 Mg 作用下， 以 乙醚 为溶剂， 以51%的产率得到bis(η4-2,3-dimethyl-1,3-butadiene)CrPMe2Ph
  参考文献：
  名称：

  Organochromium π-complexes—V. Compounds containing η4-1,3-diene and η2-alkyne molecules

  摘要：

  Cr(PMe3)2Cl2 reacts with active-Mg and butadiene or Mg(butadiene) in a stepwise manner to give initially (eta-4-1,3-C4H6)Cr(PMe3)2Cl which reacts further to (eta-4-1,3-C4H6)2CrPMe3. Related compounds are formed in the presence of PMe2Ph or 2,3-dimethylbutadiene. Cr(PEt3)2Cl2 reacts to give the dimeric species [(eta-4-2,3-dimethylbutadiene)Cr(PEt3)Cl]2, whereas in the presence of the bidentate ligand bis(diisopropylphosphino)ethane, (eta-4-1,3-C4H6)Cr(Pr2(i)PC2H4PPr2(i)) is formed. Related reduction of CrCl2-derivatives in the presence of alkynes leads to the formation of (eta-2-R'C = CR')2Cr(PR3)2 (R' = Me, Ph) and (eta-2-PhC = CPh)3CrPMe3.

  DOI：

  10.1016/s0277-5387(00)81279-6