Institute of Applied Synthetic Chemistry, Vienna University of Technology , Getreidemarkt 9/163-AC, A-1060 Wien, Austria.
Institute of Chemical Technologies and Analytics, Vienna University of Technology , Getreidemarkt 9/163-AC, A-1060 Wien, Austria.
Org Lett. 2016 Jul 1;18(13):3186-9. doi: 10.1021/acs.orglett.6b01398. Epub 2016 Jun 9.
Air-stable, thermally robust, and well-defined cationic Ni(II) PNP pincer complexes based on the 2,4-diaminotriazine scaffold are described. These complexes are active catalysts for the Suzuki-Miyaura cross-coupling of a wide range of aryl, heteroaryl (including benzoxazole, thiazole, pyridine, pyrimidine, thiazole), primary and secondary alkyl halides, and pseudohalides with different organoboronate reagents giving excellent to good isolated yields. Neutral deprotonated complexes seem to play a key role in the catalytic process.
本文描述了基于 2,4-二氨基三嗪骨架的空气稳定、热稳定且结构明确的阳离子 Ni(II) PNP 钳形配合物。这些配合物是一类高效的Suzuki-Miyaura 交叉偶联反应催化剂，能够催化多种芳基、杂芳基（包括苯并恶唑、噻唑、吡啶、嘧啶、噻吩）、一级和二级卤代烷烃以及不同硼酸酯试剂的偶联反应，得到的产物产率优异或良好。中性去质子化的配合物似乎在催化过程中起着关键作用。
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