Tandem Palladium/Copper-Catalyzed Decarboxylative Approach to Benzoimidazo- and Imidazophenanthridine Skeletons
作者:Xin Geng、Andrey Shatskiy、Gregory R. Alvey、Jian-Quan Liu、Markus D. Kärkäs、Xiang-Shan Wang
DOI:10.1021/acs.orglett.2c03647
日期:2022.12.23
A protocol for a tandem Pd/Cu-catalyzed intermolecular cross-coupling cascade between o-bromobenzoic acids and 2-(2-bromoaryl)-1H-benzo[d]imidazoles or the corresponding imidazoles is presented. The protocol provides conceptually novel and controlled access to synthetically useful N-fused (benzo)imidazophenanthridine scaffolds with high efficiency, a broad substrate scope, and excellent functional
介绍了邻溴苯甲酸和 2-(2-溴芳基)-1 H-苯并 [ d ] 咪唑或相应咪唑之间串联 Pd/Cu 催化分子间交叉偶联级联的方案。该协议提供了概念上新颖且可控的途径,可用于合成有用的N-融合(苯并)咪唑并菲啶支架,具有高效率、广泛的底物范围和出色的官能团相容性。
Palladium-catalyzed tandem N–H/C–H arylation: regioselective synthesis of N-heterocycle-fused phenanthridines as versatile blue-emitting luminophores
作者:Lipeng Yan、Dongbing Zhao、Jingbo Lan、Yangyang Cheng、Qiang Guo、Xiaoyu Li、Ningjie Wu、Jingsong You
DOI:10.1039/c3ob41760c
日期:——
A general and highly regioselective synthetic protocol for structurally diverse N-heteroaryl-fused phenanthridines has been developed. Varieties of fluorescence molecules comprising imidazole-fused, benzoimidazole-fused, indole-fused and pyrrole-fused phenanthridines were obtained by this modular approach, some of which exhibit excellent blue-emitting performance, high quantum yields, long fluorescence lifetimes, interesting electrochemical properties, and thermal stabilities.