[Rh(triethylphosphine)2(OCPh3)] | 882883-98-9

• 英文名称: [Rh(triethylphosphine)2(OCPh3)]
• CAS: 882883-98-9；1055316-00-1
• 化学式: C₃₁H₄₅OP₂Rh
• 分子量: 598.551
• InChiKey: IRBYUQBCDFDBRT-UHFFFAOYSA-N

计算性质

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

反应信息

• 作为反应物：
  描述：

  [Rh(triethylphosphine)2(OCPh3)] 、 三乙基膦 以 氘代苯 为溶剂， 以0%的产率得到[Rh(triethylphosphine)3(OCPh3)]
  参考文献：
  名称：

  Direct Observation of β-Aryl Eliminations from Rh(I) Alkoxides

  摘要：

  beta-Aryl eliminations from a series of rhodium(I) alkoxides to form rhodium aryl complexes and free ketones are reported. Tertiary phenylmethoxide complexes [Rh(PEt3)n(OCPhRR')] (n = 2, 3) were prepared via alcoholysis of {Rh(PEt3)2[N(SiMe3)2} by the corresponding alcohols HOCPhRR' in the presence and absence of added PEt3. Heating of these complexes in the presence of added PEt3 generated the rhodium phenyl complex, (PEt3)3RhPh, and the corresponding ketones in good to high yields. Kinetic results are most consistent with irreversible beta-phenyl elimination from a bisphosphine-ligated rhodium alkoxide complex. Such bisphosphine complexes result from ligand dissociation from the trisphosphine complexes and have been isolated in some cases. The bisphosphine complexes are stabilized by Rh-Cphenyl interactions, as evidenced by an X-ray structure, and this structure with a metal-aryl interaction likely illustrates the pathway for C-C bond cleavage.

  DOI：

  10.1021/ja058550q
• 作为产物：
  描述：

  三苯基甲醇 、 (PEt3)2RhN(SiMe3)2 以 not given 为溶剂， 以73%的产率得到[Rh(triethylphosphine)2(OCPh3)]
  参考文献：
  名称：

  Direct Observation of β-Aryl Eliminations from Rh(I) Alkoxides

  摘要：

  beta-Aryl eliminations from a series of rhodium(I) alkoxides to form rhodium aryl complexes and free ketones are reported. Tertiary phenylmethoxide complexes [Rh(PEt3)n(OCPhRR')] (n = 2, 3) were prepared via alcoholysis of {Rh(PEt3)2[N(SiMe3)2} by the corresponding alcohols HOCPhRR' in the presence and absence of added PEt3. Heating of these complexes in the presence of added PEt3 generated the rhodium phenyl complex, (PEt3)3RhPh, and the corresponding ketones in good to high yields. Kinetic results are most consistent with irreversible beta-phenyl elimination from a bisphosphine-ligated rhodium alkoxide complex. Such bisphosphine complexes result from ligand dissociation from the trisphosphine complexes and have been isolated in some cases. The bisphosphine complexes are stabilized by Rh-Cphenyl interactions, as evidenced by an X-ray structure, and this structure with a metal-aryl interaction likely illustrates the pathway for C-C bond cleavage.

  DOI：

  10.1021/ja058550q

文献信息

• Insertions of Ketones and Nitriles into Organorhodium(I) Complexes and β-Hydrocarbyl Eliminations from Rhodium(I) Alkoxo and Iminyl Complexes
  作者：Pinjing Zhao、John F. Hartwig

  DOI：10.1021/om800378v

  日期：2008.9.22

  electron-poor aryl group. Independent preparation of 3f−g and studies on their thermal decomposition with added PEt3 confirmed that selective β-aryl elimination occurs to generate aryl complex 1g and the corresponding ketones. Analogous β-aryl eliminations from bis-phosphine rhodium(I) alkoxo complexes 3a−e and trisphosphine rhodium(I) alkoxo complexes 4b−e were also studied, and the kinetic results were most

  制备了一系列的三（三乙基膦）-连接的有机铑（I）配合物，并研究了它们与电子贫芳基腈和二芳基酮的反应。[（PEt 3）3 Rh（Ar）]（Ar =苯基（1a）或邻-茴香基（1e））与过量的电子贫芳基Ar'C≡N（Ar'= p -CF 3 C 6 H 4或3,5-bis（CF 3）C 6 H 3）形成Rh（I）亚氨基络合物（PEt 3）3 Rh [N═C（Ar）（Ar'）]}（2h - j） 。相反，3,5-bis（CF 3）C 6 H 3 CN没有插入芳基铑（I）配合物[（PEt 3）3 Rh（Ar）]（Ar = p -CF 3 C 6 H 4（1f）或3， 5-双（CF 3）C 6 H 3（1g）），含有更多的贫电子芳基。腈插入的动力学数据与涉及初始配体解离，随后经典的迁移插入的途径最一致。亚胺基络合物2i - j在较高温度下通过β-芳基消除而分解，同时电子侧差的芳基3,5-双（CF 3）C