Overcoming the Low Reactivity of Aryl Chlorides: Amination via Reusable Polymeric Nickel–Iridium Dual Catalysis under Microwave and Visible Light
作者:Abhijit Sen、Valerii Bukhanko、Heeyoel Baek、Aya Ohno、Atsuya Muranaka、Yoichi M. A. Yamada
DOI:10.1021/acscatal.3c02171
日期:2023.10.6
poly-[Ir(ppy)2(dabpy)] and a polymeric nickel catalyst (P4VP-NiCl2), with only 0.03 mol % of iridium and 0.2 mol % of nickel sufficing to catalyze the reaction. Notably, the reaction displayed a broad substrate scope, accommodating primary, secondary, and aromatic amines, as well as both electron-rich and electron-deficient aryl chlorides. Furthermore, both the nickel and iridium catalysts could be recovered
在微波和可见光照射下,使用聚合镍和铱催化剂通过双重活化促进了芳基氯的胺化。为此,制备了一种聚合铱络合物,聚-[Ir(ppy) 2 (dabpy)],作为一种稳定且可重复使用的光催化剂,并通过核磁共振光谱、元素分析、循环伏安法和紫外可见分光光度法对其进行了表征。吸收-发射光谱。使用聚[Ir(ppy) 2 (dabpy)]和聚合物镍催化剂(P4VP-NiCl 2),仅0.03 mol%的铱和0.2 mol%的镍就足以催化反应。值得注意的是,该反应显示出广泛的底物范围,可容纳伯胺、仲胺和芳香胺,以及富电子和缺电子的芳基氯化物。此外,镍和铱催化剂都可以回收并重复使用多次,而不会显着损失活性。该方法可用于合成多种生物活性分子。