Antiaromaticity to Aromaticity: From Boroles to 1,2-Azaborinines by Ring Expansion with Azides
作者:Holger Braunschweig、Christian Hörl、Lisa Mailänder、Krzysztof Radacki、Johannes Wahler
DOI:10.1002/chem.201403101
日期:2014.8.4
We have exploited the reactivity of antiaromatic boroles, gaining access to aryl‐substituted monocyclic 1,2‐azaborinines. The observed ring‐expansion reaction of inherently electron‐deficient boroles with organometallic and organic azides is demonstrated for representative examples. This substance class is expected to provide a new avenue into 1,2‐azaborinine chemistry, especially in the area of functional
我们已经利用了抗芳香族硼酸酯的反应性,获得了被芳基取代的单环1,2-氮杂鸟嘌呤的途径。代表性的例子证明了观察到的固有电子不足的硼酸酯与有机金属和有机叠氮化物的扩环反应。该物质类别有望为1,2-氮杂嘌呤化学提供新的途径,特别是在功能性有机硼材料领域。我们的结果基于NMR和UV / Vis光谱以及单晶X射线晶体学,提供了一种几乎定量的方法,该方法还提供了许多变化点。