A simple synthesis of functionalized 3-methyl-1-pyridinyl-1H-imidazolium salts as bidentate N-heterocyclic-carbene precursors and their application in Ir-catalyzed arene borylation
摘要:
The selective alkylation of functionalized 2-(1H-imidazol-1-yl)pyridines 1 furnishes 3-methyl-1-pyridinyl-1H-imidazolium salts 2, which can be deprotonated to deliver strongly electron-donating bidentate N-heterocyclic carbene ligands (NHC). The synthesis of these ligands and their application in the iridium-catalyzed C H activated borylation of arenes with its current scope and limitations are reported. (C) 2010 Elsevier Ltd. All rights reserved.
为了促进可再生能源经济,需要开发地球上丰富的用于电催化氨氧化的过渡金属络合物。对于这一目标来说,重要的是对氨如何与配合物结合作为配体几何形状和电子效应的函数的基本理解。我们报道了一系列由四齿、面结合配体以及吡啶和N-杂环卡宾供体组合支持的 Fe(II)-NH 3配合物的合成和表征。支持配体的电子修饰导致 Fe III/II电位的显着变化和 NH 键酸度的变化。最后,报告了通过循环伏安法、受控电位本体电解以及添加化学计量有机自由基、TEMPO 和t Bu3 ArO •进行氨氧化的研究。没有观察到NH 3催化氧化成N 2 ,并且仅在与t Bu3 ArO •的反应中检测到15 N 2 。
A simple synthesis of functionalized 3-methyl-1-pyridinyl-1H-imidazolium salts as bidentate N-heterocyclic-carbene precursors and their application in Ir-catalyzed arene borylation
作者:Martin Peters、Rolf Breinbauer
DOI:10.1016/j.tetlet.2010.10.059
日期:2010.12
The selective alkylation of functionalized 2-(1H-imidazol-1-yl)pyridines 1 furnishes 3-methyl-1-pyridinyl-1H-imidazolium salts 2, which can be deprotonated to deliver strongly electron-donating bidentate N-heterocyclic carbene ligands (NHC). The synthesis of these ligands and their application in the iridium-catalyzed C H activated borylation of arenes with its current scope and limitations are reported. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and Reactivity of Fe(II) Complexes Containing Cis Ammonia Ligands
作者:Alexander S. Phearman、R. Morris Bullock
DOI:10.1021/acs.inorgchem.3c03757
日期:2024.1.29
transition-metal complexes for electrocatalytic ammonia oxidation is needed to facilitate a renewable energy economy. Important to this goal is a fundamental understanding of how ammonia binds to complexes as a function of ligand geometry and electronic effects. We report the synthesis and characterization of a series of Fe(II)–NH3 complexes supported by tetradentate, facially binding ligands with a combination
为了促进可再生能源经济,需要开发地球上丰富的用于电催化氨氧化的过渡金属络合物。对于这一目标来说,重要的是对氨如何与配合物结合作为配体几何形状和电子效应的函数的基本理解。我们报道了一系列由四齿、面结合配体以及吡啶和N-杂环卡宾供体组合支持的 Fe(II)-NH 3配合物的合成和表征。支持配体的电子修饰导致 Fe III/II电位的显着变化和 NH 键酸度的变化。最后,报告了通过循环伏安法、受控电位本体电解以及添加化学计量有机自由基、TEMPO 和t Bu3 ArO •进行氨氧化的研究。没有观察到NH 3催化氧化成N 2 ,并且仅在与t Bu3 ArO •的反应中检测到15 N 2 。