Selective palladium-catalysed arylation of 2,6-dibromopyridine using N-heterocyclic carbene ligands
作者:D. Prajapati、C. Schulzke、M. K. Kindermann、A. R. Kapdi
DOI:10.1039/c5ra10561g
日期:——
A selective palladium-catalysed arylation of 2,6-dibromopyridine has been developed by employing N-heterocyclic carbene ligands. Selective mono-arylation was performed in water/acetonitrile solvent system at ambient temperature with catalyst loading of 0.1 mol%. This reaction was also found to proceed smoothly in water although at a slightly elevated temperature of 80 °C. 2,6-Disubstituted and diversely
通过使用N-杂环卡宾配体已经开发了钯的2,6-二溴吡啶的选择性芳基化。选择性单芳基化反应是在水/乙腈溶剂体系中于室温下以0.1 mol%的催化剂负载量进行的。尽管在稍高的80℃温度下,也发现该反应在水中能顺利进行。还以高收率获得了2,6-二取代的和被不同取代的2,6-吡啶,这对于有机和药物化学家将是重要的。