carboxylate-assisted route. The synthesis and characterization of iridium(III) and rhodium(III) complexes bearing chelating CNHC^Cazolato ligands (M = Ir: [4], M = Rh: [5]) and Npyridine^Cazolato ligands (M = Ir: [7], M = Rh: [8]) are reported. In addition, the NHC complexes which are the precursors to the CNHC^Cazolato complexes (M = Ir: [2], M = Rh: [3]) were isolated and characterized.
提出了N-供体系茶碱与
铱(III)和
铑(III)在C8位置的直接C–H活化作用。N系供体组的供体强度有所不同。带有强供体
咪唑啉-2-亚基或较弱供体
吡啶基的
配体均在相似的条件下被
金属化,这表明
金属中心的电子密度在CH活化步骤中不发挥重要作用。通过
羧酸盐辅助途径进行。带有螯合C NHC ^ C azolato
配体(M = Ir:[ 4 ],M = Rh:[ 5 ])和N
吡啶^ C azolato的
铱(III)和
铑(III)配合物的合成与表征报告了
配体(M = Ir:[ 7 ],M = Rh:[ 8 ])。另外,分离并表征了作为C NHC ^ C azolato络合物的前体的NHC络合物(M = Ir:[ 2 ],M = Rh:[ 3 ])。