Brønsted Acid-Catalyzed Reaction of <i>N</i>-arylnaphthalen-2-amines with Quinone Esters for the Construction of Carbazole and C–N Axially Chiral Carbazole Derivatives
作者:Mingliang Zhang、Pin Zhao、Dongqing Wu、Zhichao Qiu、Chenyue Zhao、Wenyu Zhang、Feng Li、Jing Zhou、Lantao Liu
DOI:10.1021/acs.joc.2c02518
日期:2023.3.3
efficient synthetic method of carbazole derivatives from readily available N-arylnaphthalen-2-amines and quinone esters catalyzed by Brønsted acid. With this strategy, a series of carbazole derivatives were obtained in good to excellent yields (76 to >99) under mild conditions. Large scale reaction illustrated the synthetic utility of this protocol. Meanwhile, a series of C–N axially chiral carbazole derivatives
我们在这里展示了一种有效的合成咔唑衍生物的方法,该方法由布朗斯台德酸催化的现成的N-芳基萘-2-胺和醌酯合成。通过这种策略,在温和条件下以良好到极好的收率(76 到 >99)获得了一系列咔唑衍生物。大规模反应说明了该协议的综合效用。同时,以手性磷酸为催化剂,还构建了一系列 C-N 轴向手性咔唑衍生物,收率中等至良好(36-89% 产率),具有中等至优异的阻转选择性(44-94% ee),这提供了C-N轴向手性化合物的阻转选择性构建新策略和C-N阻转异构体的新成员。