Synthesis of new dipyridinylamine and dipyridinylmethane ligands and their coordination chemistry with Mg(ii) and Zn(ii)
作者:Zhanjiang Zheng、Mohammed Kamal Elmkaddem、Cédric Fischmeister、Thierry Roisnel、Christophe M. Thomas、Jean-François Carpentier、Jean-Luc Renaud
DOI:10.1039/b807258b
日期:——
N-arylation reactions or two Negishi cross-coupling reactions, respectively, in the presence of Pd catalysts. Deprotonation of the NH and CH2 bridge of 1a and 4, respectively, enables the formation of Zn(II) and Mg(II) complexes, whose structures have been determined by single-crystal diffraction studies and/or NMR spectroscopy. A magnesium–isopropyl complex stabilized by a bispyridyldiiminate ligand derived
受阻,对称2,2'-取代的双吡啶胺1a–c和亚甲基双吡啶4可以通过三步法从商购获得2,6-二溴吡啶,通过铜介导的烷基化反应,然后在钯存在下分别进行两个连续的布赫瓦尔德-哈特维格N-芳基化反应或两个Negishi交叉偶联反应催化剂。分别对1a和4的NH和CH 2桥进行质子化,可以形成Zn(II)和Mg(II)配合物,其结构已通过单晶衍射研究和/或确定核磁共振波谱。镁–异丙基 由双吡啶二甲酸酯稳定的复合物 配体从4推导得出是活跃的催化剂 用于等规聚合 甲基丙烯酸甲酯。