作者:Hamad H. Al Mamari、Emelyne Diers、Lutz Ackermann
DOI:10.1002/chem.201403019
日期:2014.7.28
heteroarenes, as well as alkenes, by using easy‐to‐handle aryl bromides as the arylating reagents. The triazole‐assisted CH activation strategy was found to be widely applicable, to occur under mild reaction conditions, and the catalytic system was tolerant of important electrophilic functionalities. Notably, the flexible triazole‐based auxiliary proved to be a more potent directing group for the optimized
位置选择性钌(II)催化的酰胺直接芳基化是通过CH裂解与模块化助剂完成的,该助剂衍生自容易获得的1,2,3-三唑。所述triazolyldimethylmethyl(TAM)二齿导向基团是在一个高度模块化的方式通过铜(I)催化的1,3-偶极环加成制备并允许钌催化Ç 上芳烃和杂芳烃ħ芳基化,以及烯烃,通过使用易处理的芳基溴化物作为芳基化试剂。三唑辅助的C发现氢活化策略是广泛适用的,发生在温和的反应条件下,并且催化体系耐受重要的亲电官能团。值得注意的是,与吡啶基取代的酰胺或衍生自8-氨基喹啉的底物相比,基于三唑的柔性助剂被证明是优化的钌(II)催化的直接芳基化的更有效的导向基团。