<i>tert</i>-Butyl Bromide-Promoted Intramolecular Cyclization of 2-Arylamino Phenyl Ketones and Its Combination with Cu-Catalyzed C–N Coupling: Synthesis of Acridines at Room Temperature
作者:Zifeng Cao、Yuan Zhu、Xiaoman Li、Yang He、Jinli Zhang、Liang Xu、Yu Wei
DOI:10.1021/acs.joc.0c00137
日期:2020.8.7
2-arylamino phenyl ketones is established to supersede the traditional high-temperature, strongly acidic conditions and achieve 9-substituted acridines, by virtue of the combination of 2,2,2-trifluoroethanol and tert-butyl bromide. This protocol can be merged well with the preceding Cu-catalyzed intermolecular Chan–Evans–Lam cross-coupling reactions, therefore enabling pot-economic modular synthesis of 9-substituted
在此,借助于2,2,2-三氟乙醇和叔丁基溴的组合,建立了2-芳基氨基苯基酮的分子内环化体系,以取代传统的高温,强酸性条件并获得9-取代的a啶。。该方案可以与之前的铜催化的分子间Chan–Evans–Lam交叉偶联反应很好地合并,因此可以在室温下从容易获得的2-氨基苯基酮和芳基硼酸进行锅内经济的模块化合成9-取代的cr啶。