(η⁵-1,2-C₅H₃BrPPh₂)Re(CO)₃ | 1520922-80-8

• 英文名称: (η⁵-1,2-C₅H₃BrPPh₂)Re(CO)₃
• CAS: 1520922-80-8
• 化学式: C₂₀H₁₃BrO₃PRe
• 分子量: 598.406
• InChiKey: PEDQUULVKLBQTH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• 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：
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反应信息

• 作为产物：
  描述：

  (η5-monobromocyclopentadienyl)tricarbonylrhenium 、 二苯基氯化膦 在 2,2,6,6-tetramethylpiperidinyl-lithium 作用下， 以 四氢呋喃 为溶剂， 反应 3.5h， 以48%的产率得到(η⁵-1,2-C₅H₃BrPPh₂)Re(CO)₃
  参考文献：
  名称：

  Syntheses, structures, and reactions of cyrhetrenylphosphines; applications in palladium catalyzed Suzuki cross-coupling reactions

  摘要：

  Reaction of bromocyrhetrene (eta(5)-C5H4Br)Re(CO)(3) with lithium tetramethylpiperidide (LiTMP; 1.0 equiv, -78 degrees C) and then ClPR2 (R = a, Ph; b, Cy) gives (eta(5)-1,2-C5H3BrPR2)Re(CO)(3) (5a, 48%; 5b, 80%). Analogous reactions with 2.0 equiv of LiTMP and ClPR2 give the 1-bromo-2,5-diphosphidocyclopentadienyl complexes [eta(5)-1,2,5-C5H2Br(PR2)(2)]Re(CO)(3) (6a, 60%; 6b, 80%). These rhenium containing or cyrhetrenylphosphines are combined with Pd(OAc)(2) (2:1 mol ratio) to give catalysts for Suzuki couplings of phenylboronic acid and p-bromotoluene or p-bromoacetophenone (1 mol%; Cs2CO3, toluene, 100 degrees C). The catalyst with 5b exhibits much higher activities than the others, with conversions of 92-64% after 20 min. The crystal structures of 5b and 6a, b are determined. (C) 2013 Elsevier B. V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2013.10.029