Enhancing the Stability of Aromatic PCN Pincer Nickel Complexes by Incorporation of Pyridine as the Nitrogen Side Arm,European Journal of Inorganic Chemistry

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Enhancing the Stability of Aromatic PCN Pincer Nickel Complexes by Incorporation of Pyridine as the Nitrogen Side Arm
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-10-27 , DOI: 10.1002/ejic.202000727
Abdelrazek H. Mousa ₁ , Kaushik Chakrabarti ₁ , Ghodsieh Isapour ₁ , Jesper Bendix ₂ , Ola F. Wendt ₁

Affiliation

New PCN^Py pincer nickel complexes have been synthesized through a short synthetic route. Incorporating pyridine as the nitrogen side arm facilitated the C–H activation in the PCN ligand and allowed the cyclometallation with nickel to take place at room temperature. Pyridine also enhanced the stability of β‐hydrogen‐containing alkyl complexes. Also, the symmetric NCN nickel complex with pyridine side arms was successfully obtained giving a rare example of such type of complexes to be prepared through direct C–H activation. Furthermore, preliminary results showed that the (PCN^Py)Ni–Br is active in Kumada coupling reactions particularly the coupling of aryl halides with aryl Grignard reagents.

中文翻译：

通过掺入吡啶作为氮侧臂来增强芳族PCN钳制镍配合物的稳定性

新的PCN ^Py钳形镍配合物是通过短合成路线合成的。掺入吡啶作为氮侧臂可促进PCN配体中的C–H活化，并允许在室温下用镍进行环金属化。吡啶也增强β的稳定性-含氢烷基络合物。同样，成功获得了带有吡啶侧臂的对称NCN镍配合物，这是通过直接C–H活化制备的这类配合物的一个罕见例子。此外，初步结果表明，（PCN ^Py）Ni-Br在Kumada偶联反应中具有活性，特别是芳基卤化物与芳基格氏试剂的偶联。

更新日期：2020-12-01

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