Active Palladium Colloids via Palladacycle Degradation as Efficient Catalysts for Oxidative Homocoupling and Cross-Coupling of Aryl Boronic Acids
Active Palladium Colloids via Palladacycle Degradation as Efficient Catalysts for Oxidative Homocoupling and Cross-Coupling of Aryl Boronic Acids
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DOI：
10.1021/acsomega.6b00326
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发表时间：
2017-01
期刊：
影响因子：
4.1
通讯作者：
Vaibhav Sable;Karan Maindan;A. Kapdi;P. Shejwalkar;K. Hara
中科院分区：
文献类型：
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作者：
Vaibhav Sable;Karan Maindan;A. Kapdi;P. Shejwalkar;K. Hara
首次分离出了钯环配合物（Herrmann-Beller 1）降解后形成的活性钯胶体，并用透射电子显微镜（TEM）、高分辨TEM、X射线光电子能谱（XPS）和扩展X射线吸收精细结构谱等技术进行了表征。合成的钯胶体已被用作有效的催化剂，用于芳基硼酸的氧化偶联。两种不同的芳基硼酸的交叉偶联也可以使用这些活性钯胶体。这是首次报道芳基硼酸间的这种偶联反应。
Active palladium colloids formed upon degradation of a palladacyclic complex (Herrmann–Beller 1) have been isolated for the first time and thoroughly characterized with techniques such as transmission electron microscopy (TEM), high-resolution TEM, X-ray photoelectron spectroscopy (XPS), and extended X-ray absorption fine structure spectroscopy. The synthesized palladium colloids have been utilized as efficient catalysts for the oxidative homocoupling of aryl boronic acids. Cross-coupling of two different aryl boronic acids has also been made possible using these active palladium colloids. This is the first report of this kind of coupling between aryl boronic acids.