Iridium complexes with ligands of 1,8-Naphthyridine-2-carboxylic acid derivatives-preparation and catalysis
作者:Ming Li、Yen-Pin Hsu、Yi-Hung Liu、Shie-Ming Peng、Shiuh-Tzung Liu
DOI:10.1016/j.jorganchem.2020.121537
日期:2020.11
8-naphthyridine(Np)-2-carboxylic derivatives L1-L3 [L1 = Np-2-COOH, L2 = Np-2-CONH2, L3 = Np-2-CONHCH2Py] with [Ir(COD)(µ-OMe)]2 yielded the corresponding complexes [Ir(COD)(Ln)] (1~3, n = 1~3, respectively). The potential tridentate L3 behaves as a bidentate donor in the complex 3. Treatment of L1 with [Ir(COD)Cl]2 under nitrogen atmosphere gave a Ir(III) hydride complex [Ir(COD)(L1)HCl] (4). However, carrying
1,8-萘啶(Np)-2-羧酸衍生物L 1 -L 3 [ L 1 = Np-2-COOH,L 2 = Np-2-CONH 2,L 3 = Np-2-CONHCH 2 Py ]用的[Ir(COD)(μ-OME)] 2得到相应的配合物的[Ir(COD)(大号ñ)](1〜3中,n = 1〜3,分别地)。潜在的三齿大号3个表现为在复杂的二齿供体3。用[Ir(COD)Cl] 2处理L 1在氮气氛下,得到Ir(III)氢化物络合物[Ir(COD)(L 1)HCl](4)。然而,在氧气存在下进行反应产生了二氯化Ir(III)物质[Ir(COD)(L 1)Cl 2 ](5)。所有这些配合物均通过光谱分析和X射线单晶测定进行表征。筛选了铱络合物在胺与醇的胺化反应中的催化活性。似乎在120℃下,在Cs 2 CO 3存在下,铱酰胺基络合物2和3对苯胺与醇的胺化表现出优异的催化活性。