Metal-Free <i>Ortho</i> C–H Borylation of 2-Phenoxypyridines under Mild Conditions
作者:Liting Niu、Haijun Yang、Ruji Wang、Hua Fu
DOI:10.1021/ol300950r
日期:2012.5.18
An efficient metal-free ortho C–H borylation has been developed via sequential borylation of substituted 2-phenoxypyridines with BBr3 following esterification with pinacol. The corresponding aryl boronates were obtained in good yields. The synthesized aryl boronates can be easily transformed into various useful products. Therefore, the present method makes functionalizations of aryl C–H bonds easy
通过频哪醇酯化后,将取代的2-苯氧基吡啶与BBr 3依次进行硼酸化,已开发出一种高效的无金属邻位CH硼酸化方法。以良好的产率获得了相应的硼酸芳基酯。合成的硼酸芳基酯可以容易地转化成各种有用的产物。因此,本方法使芳基C–H键的官能化变得容易。