A 0.5-11 g scale synthesis of the 5,5′-disubstituted 2,2′-bipyridines 8 is described. The pyridine units are connected to one another by Pd-catalyzed cross-coupling reactions. This method allows one to introduce bromo functions and flexible chains at the terminal phenyls which optimizes this class of bidentate ligands for supra- and macromolecular applications.
描述了一种0.5-11克规模合成5,5′-二取代的2,2′-联
吡啶8的方法。
吡啶单元通过Pd催化的交叉耦合反应相互连接。该方法允许在末端苯基上引入
溴功能和灵活链,从而优化这一类双齿
配体在超分子和大分子应用中的性能。