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。
Metal-assisted delayed fluorescent emitters employing benzo-imidazo-phenanthridine and analogues
申请人:Arizona Board of Regents on behalf of Arizona State University
公开号:US11063228B2
公开(公告)日:2021-07-13
Metal-assisted delayed fluorescent emitters employing benzo-imidazo-phenanthridine and analogues for full color displays and lighting applications.
Starting from 2-arylbenzimidazoles and aryl halides, an efficient palladium-based catalytic method for the synthesis of benzimidazole-fused phenanthridines has been developed. This reaction sequence comprises intermolecular C-H arylation and intramolecular aerobic oxidative C-H amination, involving the rupture of two C-H bonds, one C-X bond, and one N-H bond in one pot. The Pd-II-Pd-IV-Pd-II and Pd-II-Pd-0-Pd-II catalytic cycles work together under the reported conditions to generate phenanthridines with diverse substituents.
Metal-Assisted Delayed Fluorescent Emitters Employing Benzo-imidazo-phenanthridine and Analogues
申请人:Arizona Board of Regents on behalf of Arizona State University
公开号:US20200119288A1
公开(公告)日:2020-04-16
Metal-assisted delayed fluorescent emitters employing benzo-imidazo-phenanthridine and analogues for full color displays and lighting applications.