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首页> 外文期刊>Chemistry: A European journal >Oligo(borolyl)benzenes-Synthesis and properties
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Oligo(borolyl)benzenes-Synthesis and properties

机译：寡聚（硼烯丙基）苯-合成与性能

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摘要

Herein, we report the synthesis of boroles that are linked by a conjugated phenylene spacer. The characterization of these compounds was completed by NMR and UV/Vis spectroscopy, as well as X-ray crystal diffraction. Furthermore, the coordination behavior of these oligoboroles towards five electronically and sterically disparate pyridine derivatives was studied and revealed fundamental differences in the properties of the resulting adducts. The experimental results were supported by density functional theory (DFT) calculations that showed a charge-transfer effect upon formation of the pyridine-4-carbonitrile adduct. By chemical reduction of a tris(borolyl)-substituted benzene derivative, a hexaanion was isolated as a result of a two-electron reduction of each borolyl moiety. The interaction of the borolyl units through the aryl spacer, and the possible increase of the Lewis acidity due to the conjugation of the borolyl moieties, were investigated by base transfer reactions.
机译：在此，我们报道了通过共轭亚苯基间隔基连接的硼酸酯的合成。这些化合物的表征通过NMR和UV / Vis光谱以及X射线晶体衍射完成。此外，研究了这些寡硼酸酯对五个电子和空间上不同的吡啶衍生物的配位行为，并揭示了所得加合物性质的根本差异。实验结果得到密度泛函理论（DFT）计算的支持，该计算表明在形成吡啶-4-甲腈加合物时有电荷转移作用。通过三（硼烷基）取代的苯衍生物的化学还原，由于每个硼烷基部分的两电子还原，分离了六阴离子。通过碱转移反应研究了通过芳基间隔基的硼烯丙基单元的相互作用，以及由于硼烯丙基部分的共轭而导致的路易斯酸度可能的增加。

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