参考标题:Synthesis Of Unsymmetrically Substituted Bipyridines By Palladium-Catalyzed Direct C−h Arylation Of Pyridine N-Oxides 作者:Sasa Duric,C. Christoph Tzschucke |发布日期:2011.5.6 摘要:Substituted Bipyridines Were Efficiently Prepared By Direct Coupling Between Pyridine N-Oxides And Halopyridines Using A Palladium Catalyst. Pyridine N-Oxides With Electron-Withdrawing Substitutents Gave The Best Yields. This Method Allows The Convenient Preparation Of 2,2′-, 2,3′-, And 2,4′-Bipyridines Which Are Useful As Functionalized Ligands For Metal Complexes Or As Building Blocks For Supramolecular