A Versatile Route to Unstable Diazo Compounds via Oxadiazolines and their Use in Aryl-Alkyl Cross-Coupling Reactions
作者:Andreas Greb、Jian-Siang Poh、Stephanie Greed、Claudio Battilocchio、Patrick Pasau、David C. Blakemore、Steven V. Ley
DOI:10.1002/anie.201710445
日期:2017.12.22
Coupling of readily available boronic acids and diazo compounds has emerged recently as a powerful metal-free carbon-carbon bond forming method. However, the difficulty in forming the unstable diazo compound partner in a mild fashion has hitherto limited their general use and the scope of the transformation. Here, we report the application of oxadiazolines as precursors for the generation of an unstable
作为一种有效的无金属碳-碳键形成方法,最近出现了易于获得的硼酸和重氮化合物的偶联。然而,迄今为止,以温和的方式形成不稳定的重氮化合物伴侣的困难限制了它们的一般用途和转化范围。在这里,我们报道了恶二唑啉作为前体的应用,它使用流式紫外光解法生成不稳定的重氮化合物家族,并首次用于不同的原去硼和氧化C(sp2)-C(sp3)交叉偶联过程中,具有出色的功能组容忍度。