One-pot synthesis of dual-state emission (DSE) luminogens containing the V-shape furo[2,3-b]furan scaffold
作者:Jie Zhou、Manna Huang、Xinhai Zhu、Yiqian Wan
DOI:10.1016/j.cclet.2020.02.038
日期:2021.1
Abstract To discover novel fluorophores of solution and solid dual-state emission (DSE) materials, unique V-shape furo[2,3-b]furans have been designed and synthesized by a one-pot method for the first time and their photoluminescent properties have been explored in benzene, THF, DMF and DMSO, as well as in the solid state. As the best example, 2,5-bis(4-(9H-carbazol-9-yl)phenyl)-6a-amino-3a,6a-dihydrofuro[2
Palladium-catalyzed C–H bond activation for the assembly of <i>N</i>-aryl carbazoles with aromatic amines as nitrogen sources
作者:Xiaobing Liu、Heyun Sheng、Yao Zhou、Qiuling Song
DOI:10.1039/c9cc09493h
日期:——
A convenient and efficient palladium-catalyzedC-Hbondactivation for the assembly of N-aryl carbazole is reported, in which two C-N bonds were formed under one set of conditions. The desired carbazoles were achieved in decent yields with a wide substrate scope by utilizing readily available 2-iodo biphenyls and aromatic amines as starting materials.
Palladium catalysed aryl amination reactions in supercritical carbon dioxide
作者:Catherine J. Smith、Melanie W. S. Tsang、Andrew B. Holmes、Rick L. Danheiser、Jefferson W. Tester
DOI:10.1039/b509345g
日期:——
Palladiumcatalysed C-N bond formation in supercritical carbondioxide has been accomplished. Carbamic acid formation is avoided in part through the use of an N-silylamine as the coupling partner. Employing a catalyst system of Pd2dba3(1 mol%) and 2-dicyclohexylphosphino-2',4',6'-triisopropyl-1,1'-biphenyl (X-Phos)(2 mol%) enabled the catalytic amination of aryl bromides and chlorides with N-silylanilines