Formal [2 2 2] Cycloaddition Reaction of a Metal-Carbyne Complex with Nitriles: Synthesis of a Metallapyrazine Complex
Formal [2 2 2] Cycloaddition Reaction of a Metal-Carbyne Complex with Nitriles: Synthesis of a Metallapyrazine Complex
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金属碳炔配合物与腈的形式[2 2 2]环加成反应：金属吡嗪配合物的合成
DOI：
10.1021/acs.organomet.9b00213
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发表时间：
2019
期刊：
影响因子：
2.8
通讯作者：
Xia Haiping
中科院分区：
文献类型：
--
作者：
Lin Jianfeng;Ding Linting;Zhuo Qingde;Zhang Hong;Xia Haiping
尽管炔在与腈的[2+2+2]环加成反应中已被广泛利用来生成N-杂环芳烃，但在与腈的[2+2+2]环加成反应中从未使用过“类炔”金属-碳三键。我们通过金属-卡宾配合物与腈的[2+2+2]环加成反应合成了第一个金属吡嗪。实验观察和密度泛函理论计算证实了金属五苯并吡嗪的芳香性。
Although alkynes have been extensively exploited in [2 + 2 + 2] cycloadditions with nitriles to form N-heterocyclic aromatics, the “alkyne-like” metal–carbon triple bond has never been used in [2 + 2 + 2] cycloadditions with nitriles. We demonstrate the synthesis of the first metallapyrazine through [2 + 2 + 2] cycloaddition reactions of a metal–carbyne complex with nitriles. Experimental observations and density functional theory calculations are evidence for the aromatic character of the metallapentalenopyrazine.