Palladium-Catalyzed Double <i>N</i>-Arylation to Access Unsymmetric <i>N</i>,<i>N</i>′-Bicarbazole Scaffolds
作者:Huan Zhang、Yi Ding、Mei-Ru Zhang、Chuan-Jun Lu、Jia Feng、Ren-Rong Liu
DOI:10.1021/acs.joc.3c00637
日期:2023.7.21
Herein, the palladium-catalyzed double C–N coupling of 9H-carbazol-9-amines and 2,2′-dibromo-1,1′-biphenyl is reported. This protocol offers access to N,N′-bicarbazole scaffolds, which have frequently been used as linkers in the construction of functional covalent organic frameworks (COFs). A variety of substituted N,N′-bicarbazoles were synthesized in moderate to high yields based on this chemistry
在此,报道了 9 H-咔唑-9-胺和 2,2'-二溴-1,1'-联苯的钯催化双 C-N 偶联。该协议提供了对N , N'-联咔唑支架的访问,这些支架经常被用作构建功能性共价有机框架 (COF) 的连接体。基于该化学反应,以中等到高产率合成了多种取代的N , N'-联咔唑,并且通过四溴化物4和四炔化物5等COF单体的合成展示了该方法的潜在应用。