[Ni(1,2-bis(di-tert-butylphosphino)ethane)(η²-C,C-styrene)] | 1414398-17-6

• 英文名称: [Ni(1,2-bis(di-tert-butylphosphino)ethane)(η²-C,C-styrene)]
• 英文别名: [Ni(dtbpe)(η²-C,C-styrene)]；[(dtbpe)Ni(styrene)]
• CAS: 1414398-17-6
• 化学式: C₂₆H₄₈NiP₂
• 分子量: 481.305
• InChiKey: AVLOZDFIEVIBER-UHFFFAOYSA-N

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：
  None

反应信息

• 作为反应物：
  描述：

  二氧化碳 、 [Ni(1,2-bis(di-tert-butylphosphino)ethane)(η²-C,C-styrene)] 以 四氢呋喃 、 甲醇 为溶剂， 反应 36.0h， 以24.68%的产率得到[Ni(1,2-bis(di-tert-butylphosphino)ethane)(CO₃)]
  参考文献：
  名称：

  Nickel-Catalyzed Reductive Hydroesterification of Styrenes Using CO₂ and MeOH

  摘要：

  Complexes [(dippe)Ni(mu-H)](2) (A) (dippe = 1,2-bis-di-isopropylphosphino)ethane) and [(dtbpe)Ni(mu-H)](2) (B) (dtbpe = 1,2-bis-di-tert-butylphospino)ethane) catalyze the reductive hydroesterification of styrenes with the use of CO2 and MeOH. The latter acts as a hydrogen source and as an esterificating agent, to yield the corresponding branched and linear esters in moderate to good yields. In all of the studied reactions the linear esters were obtained in higher amounts than the branched ones. When the hydroesterification reaction was carried out using a stoichiometric metal/substrate ratio, the complexes [(P-P)Ni(CO)(2)] and [(P-P)Ni(CO3)] (P-P = dippe or dtbpe) were isolated and characterized by standard spectroscopic methods. Compounds [(dtbpe)Ni(CO)(2)] and [(dtbpe)Ni(CO3)] were also fully characterized by single-crystal X-ray diffraction.

  DOI：

  10.1021/om300819d
• 作为产物：
  描述：

  苯乙烯 、 [Ni(1,2-bis(di-tert-butylphosphino)ethane)(μ-H)]₂ 以 四氢呋喃 、 甲醇 为溶剂， 反应 0.17h， 生成 [Ni(1,2-bis(di-tert-butylphosphino)ethane)(η²-C,C-styrene)]
  参考文献：
  名称：

  Nickel-Catalyzed Reductive Hydroesterification of Styrenes Using CO₂ and MeOH

  摘要：

  Complexes [(dippe)Ni(mu-H)](2) (A) (dippe = 1,2-bis-di-isopropylphosphino)ethane) and [(dtbpe)Ni(mu-H)](2) (B) (dtbpe = 1,2-bis-di-tert-butylphospino)ethane) catalyze the reductive hydroesterification of styrenes with the use of CO2 and MeOH. The latter acts as a hydrogen source and as an esterificating agent, to yield the corresponding branched and linear esters in moderate to good yields. In all of the studied reactions the linear esters were obtained in higher amounts than the branched ones. When the hydroesterification reaction was carried out using a stoichiometric metal/substrate ratio, the complexes [(P-P)Ni(CO)(2)] and [(P-P)Ni(CO3)] (P-P = dippe or dtbpe) were isolated and characterized by standard spectroscopic methods. Compounds [(dtbpe)Ni(CO)(2)] and [(dtbpe)Ni(CO3)] were also fully characterized by single-crystal X-ray diffraction.

  DOI：

  10.1021/om300819d

文献信息

• Investigations on the catalytic carboxylation of olefins with CO₂ towards α,β-unsaturated carboxylic acid salts: characterization of intermediates and ligands as well as substrate effects
  作者：Ivana Jevtovikj、Simone Manzini、Matthias Hanauer、Frank Rominger、Thomas Schaub

  DOI：10.1039/c5dt01040c

  日期：——

  salts and a detailed investigation on the critical steps in the catalysis are reported. The influence of two chelating phosphine ligands and several olefins on the elemental steps of the catalysis is shown. The work focusses on the formation of intermediate olefin complexes, lactone formation and base induced elimination of the lactone. The direct carboxylation of olefins is possible using nickel catalysts

  报道了乙烯以外的烯烃向α，β-不饱和羧酸盐的羧化以及对催化关键步骤的详细研究。显示了两种螯合膦配体和几种烯烃对催化元素步骤的影响。这项工作集中在中间烯烃配合物的形成，内酯的形成和碱引起的内酯的消除上。使用镍催化剂可以使烯烃直接羧化，这开辟了一条通往所需α，β-不饱和羧酸盐的新途径。该反应对1,3-二烯特别有效，并通过烯丙基羧酸盐的形成。在这种情况下，形成这种烯丙基型内酯复合物的能力似乎是向满意的营业额迈出的最具挑战性的一步。