作者:Ryan A. Altman、Erica D. Koval、Stephen L. Buchwald
DOI:10.1021/jo070807a
日期:2007.8.1
10-phenanthroline (L1c) was found to be an efficient ligand for the copper-catalyzed N-arylation of imidazoles and benzimidazoles with both aryl iodides and bromides under mild conditions. Further optimization of the system has revealed that the addition of poly(ethylene glycol) accelerates this reaction. A variety of hindered and functionalized imidazoles, benzimidazoles, and aryl halides were transformed in good
发现4,7-二甲氧基-1,10-菲咯啉(L1c)是在温和条件下铜催化的咪唑和苯并咪唑与芳基碘化物和溴化物的N-芳基化反应的有效配体。系统的进一步优化表明,聚乙二醇的加入会加速该反应。各种受阻和功能化的咪唑,苯并咪唑和芳基卤化物均以良好的转化率达到了极好的收率。杂芳基卤化物也以中等至良好的产率偶联。我们还介绍了从一系列偶联反应中获得的结果,这些反应直接比较了L1c与其他最近报道的配体的使用。