[(cyclooctadiene)(1,4-dibromobenzene)]ruthenium(0) | 187108-03-8

• 英文名称: [(cyclooctadiene)(1,4-dibromobenzene)]ruthenium(0)
• CAS: 187108-03-8
• 化学式: C₁₄H₁₆Br₂Ru
• 分子量: 445.159
• InChiKey: SMQTVCDPSQXNAS-GCOBPYNFSA-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

• 作为反应物：
  描述：

  [(cyclooctadiene)(1,4-dibromobenzene)]ruthenium(0) 、 (1R,2S,5R)-Menthyl chloroformate 在 n-BuLi 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 以68%的产率得到(-)-[bis(menthyl terephthalate)(cyclooctadiene)]ruthenium(0)
  参考文献：
  名称：

  A Specific Route to Enantiomerically Pure Asymmetric (η ⁶ ‐Arene)(η ⁴ ‐1,5‐cyclooctadiene)Ru(0) Complexes

  摘要：

  AbstractChiral or achiral (arene)(COD)Ru complexes can be made by replacing the η6‐ligands of (η4‐1,5‐COD)(η6‐1,3,5‐cyclooctatriene)Ru (1) or (η4‐1,5‐COD)(η6‐naphthalene)Ru (2) by a suitable arene. This well known reaction has been extended to mono‐ and dibromoarenes and we report a novel route to substituted (arene)(COD)Ru species, utilizing (bromoarene)‐(COD)Ru as starting materials. These facilitate a rapid bromine‐lithium exchange reaction with nBuLi at low temperatures and the lithiated species react readily with alkyl chloroformates as electrophiles. By using chiral electrophiles [alkyl = (‐)‐menthyl] enantiomerically pure or diastereomeric complexes containing CO2R* groups are formed, depending on the symmetry of the original complex. A diastereomeric 1:1 mixture was separated by recrystallization. All (arene)‐(COD)Ru complexes tested so far are useful as catalysts for the hydrogenation of simple alkenes at room temperature.

  DOI：

  10.1002/cber.19971300121
• 作为产物：
  描述：

  (η6-naphthalene)(η4-1,5-cyclooctadiene)ruthenium(0) 、 1,4-二溴苯 以 四氢呋喃 、 乙腈 为溶剂， 以62%的产率得到[(cyclooctadiene)(1,4-dibromobenzene)]ruthenium(0)
  参考文献：
  名称：

  A Specific Route to Enantiomerically Pure Asymmetric (η ⁶ ‐Arene)(η ⁴ ‐1,5‐cyclooctadiene)Ru(0) Complexes

  摘要：

  AbstractChiral or achiral (arene)(COD)Ru complexes can be made by replacing the η6‐ligands of (η4‐1,5‐COD)(η6‐1,3,5‐cyclooctatriene)Ru (1) or (η4‐1,5‐COD)(η6‐naphthalene)Ru (2) by a suitable arene. This well known reaction has been extended to mono‐ and dibromoarenes and we report a novel route to substituted (arene)(COD)Ru species, utilizing (bromoarene)‐(COD)Ru as starting materials. These facilitate a rapid bromine‐lithium exchange reaction with nBuLi at low temperatures and the lithiated species react readily with alkyl chloroformates as electrophiles. By using chiral electrophiles [alkyl = (‐)‐menthyl] enantiomerically pure or diastereomeric complexes containing CO2R* groups are formed, depending on the symmetry of the original complex. A diastereomeric 1:1 mixture was separated by recrystallization. All (arene)‐(COD)Ru complexes tested so far are useful as catalysts for the hydrogenation of simple alkenes at room temperature.

  DOI：

  10.1002/cber.19971300121