描述了在空间上需要的,在室温下稳定的五-(邻取代苯基)吡啶的阻转异构体衍生物的第一合成。五溴吡啶与选定的间甲苯基和邻甲苯基硼酸的Suzuki-Miyaura交叉偶联反应提供了一系列五芳基吡啶衍生物。通过单晶X射线分析证实了五-(邻甲苯基)吡啶的两种室温稳定的阻转异构体衍生物的结构。通过手性溶剂化的1 H NMR光谱检查外消旋阻转异构体,以观察单个对映异构体的存在。
Site Selective Synthesis of Pentaarylpyridines<i>via</i>Multiple Suzuki-Miyaura Cross-Coupling Reactions
作者:Sebastian Reimann、Peter Ehlers、Andranik Petrosyan、Stefanie Kohse、Anke Spannenberg、Annette E. Surkus、Tariel V. Ghochikyan、Ashot S. Saghyan、Stefan Lochbrunner、Oliver Kühn、Ralf Ludwig、Peter Langer
DOI:10.1002/adsc.201400164
日期:2014.6.16
Pentaarylpyridines were conveniently prepared in one step by pentafold Suzuki–Miyaura reactions of pentachloropyridine. Moreover, site selective reactions were performed, leading to various substituted arylpyridines. Pentaarylpyridines were studied in detail by means of DFT calculations and by optical spectroscopy.