異種二核金属錯体と第二配位圏の遷移金属錯体による酸化触媒及びCH活性化触媒の創出

在第二配位层中使用不同的双核金属配合物和过渡金属配合物创建氧化催化剂和CH活化催化剂

基本信息

项目摘要

During Fiscal Year 2018, the JSPS fellow Dr Orestes Rivada-Wheelaghan was involved in finalizing the research projects on the formation of heteropolymetallic complexes. Several directions were pursued:1) Selective formation of Cu-Pd-Pd-Cu complexes was achieved using polynuclearing ligands proposed in this project. These complexes were found to react with terminal alkyne to give a binuclear Pd-Cu acetylide complex, which then undergoes C-C elimination from Pd(acetyline)(Aryl) center. This reactivity closely resembles the mechanism of the Sonogashira coupling. Our ligand platform allows to obtain model compounds that shed light on the mechanism of Sonogashira coupling as they feature Cu and Pd center in close proximity and allow to structurally characterize the intermediates. In collaboration with Agusti Lledos, we are currently finalizing DFT study of the detailed mechanism of C(sp)-C(sp2) coupling in multimetallic Cu-Pd complexes.2) Using ligand modification, we also obtained a complex with "reversed" Pd-Cu-Cu-Pd core. Interestingly, this complex was found to be an active catalyst for gem-selective terminal alkyne dimerization at RT. However, later studies found that under reaction conditions, polymetallic core dissociates into mononuclear Cu and Pd, latter acting as a catalyst for alkyne dimerization.3) We also finalized the project related to Ru complex with our ligand platform that features secondary coordination sphere interactions. This complex is active in catalytic benzyl alcohol acceptorless dehydrogenation.
在2018财政年度,JSPS研究员Orestes Rivada-Wheelaghan博士参与完成了关于形成异多金属络合物的研究项目。主要研究方向如下:1)利用本课题提出的多核配体实现了Cu-Pd-Pd-Cu配合物的选择性合成。这些配合物与末端炔反应生成双核Pd-Cu乙炔配合物,然后从Pd(乙炔)(芳基)中心进行C-C消除。这种反应性非常类似于Sonogashira偶联的机制。我们的配体平台允许获得模型化合物,这些模型化合物揭示了Sonogashira偶联的机制,因为它们具有非常接近的Cu和Pd中心,并允许在结构上表征中间体。与Agusti Lledos合作,我们目前正在完成对多金属Cu-Pd配合物中C(sp)-C(sp2)耦合的详细机理的DFT研究。2)通过配体修饰,我们还获得了具有“反向”Pd-Cu-Cu-Pd核的配合物。有趣的是,该配合物在室温下被发现是一种具有宝石选择性的末端炔二聚催化剂。然而,后来的研究发现,在反应条件下,多金属核解离成单核Cu和Pd,后者作为炔二聚的催化剂。3)我们还完成了与我们的配体平台相关的Ru配合物的项目,该配体平台具有次级配位球相互作用。该配合物对苯甲醇无受体脱氢反应具有催化活性。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
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Unsymmetrical naphthyridinone-based ligand scaffolds for the development of linear chain multi-metallic complexes
用于开发直链多金属配合物的不对称萘啶酮配体支架
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Rivada-Wheelaghan;O.; Khusnutdinova;J. R.
  • 通讯作者:
    J. R.
New Naphthyridne-Based Platform for the Development of Selective Hetero-bimetallic Complexes. Synthesis and Reactivity.
用于开发选择性异双金属配合物的新型萘啶平台。
  • DOI:
  • 发表时间:
    2016
  • 期刊:
  • 影响因子:
    0
  • 作者:
    O. Rivada-Wheelaghan;J. R. Khusnutdinova;Orestes Rivada-Wheelaghan; Julia Khusnutdinova
  • 通讯作者:
    Orestes Rivada-Wheelaghan; Julia Khusnutdinova
Research at CCCU
CCCU研究
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Multimetallic CuI-PdII Linear Chain Complexes. Molecular Models for Sonogashira Coupling Reactions
多金属 CuI-PdII 线性链配合物。
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Rivada-Wheelaghan;O.; Khusnutdinova;J. R.
  • 通讯作者:
    J. R.
Unsymmetrical naphthyridinone based ligand scaffolds for the development of linear chain multimetallic complexes
用于开发直链多金属配合物的不对称萘啶酮配体支架
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    O. Rivada-Wheelaghan;J. R. Khusnutdinova
  • 通讯作者:
    J. R. Khusnutdinova
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