通过控制降低四二而形成B-B键
Thomas Kaese1, Alexander Hübner1, Michael Bolte1
1Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Straße 7, D-60438 Frankfurt am Main, Germany.
Journal of the American Chemical Society
|April 26, 2016
概括
二甲基 () 作为添加的石墨烯片的前体. 与LiNaph/THF或KC8等试剂的还原合产生了各种含结构,包括环缩和桥式物种.
科学领域:
- 有机金属化学
- 材料科学
- 化学
背景情况:
- 二甲基 () 是合成新型含化合物的多功能前体.
- 降解性B-B合提供了一种创建-碳材料的途径,包括石墨烯衍生物.
- 了解替代物再分配和过度减少对于控制反应结果至关重要.
研究的目的:
- 探索一个特定的二次烯,1,2,2-bis,4,4'-di-tert-butyl-2,2'-biphenylylene) di6的降解性B-B合.
- 调查不同降解剂 (LiNaph/THF和KC8) 以及它们对反应产品的影响.
- 描述由此产生的含结构,包括重新排列的多环芳.
主要方法:
- 在四水 (THF) 中使用甲 (LiNaph) 的二电子还原.
- 使用石墨 (KC8) 和随后的化物抽象反应进行降解.
- 使用多核核磁共振 (NMR) 光谱和X射线晶体学对所有合成产品进行表征.
主要成果:
- 在过度降解时,甲/THF降解产生重新排列的产物 (Li2[6],Li2[7]) 和双重添加的二[g,p]烯 (Li2[1]).
- 通过KC8的降解产生二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二.
- 从K2中提取化物[5]或直接减少KC8,可以通过单个原子 (K[8]) 弥合B-B键.
结论:
- 二次性烯 () 的降解合是复杂含结构的可行途径.
- 减少剂的固体测量对减少和重新排列的程度进行了关键控制.
- 这项研究证明了添加的新型多环芳和桥的合成和结构特征.
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