Sterically Hindered Amination of Aryl Chlorides Catalyzed by a New Carbazolyl-Derived P,N-Ligand-Composed Palladium Complex
作者:Wing In Lai、Man Pan Leung、Pui Ying Choy、Fuk Yee Kwong
DOI:10.1055/s-0037-1611534
日期:2019.7
‡ These authors contributed equally to this work. Published as part of the Special Topic Amination Reactions in Organic Synthesis Abstract A family of 2-(9H-carbazol-9-yl)phenyl-based phosphine ligands were synthesized and their efficacy in promoting the steric hindered Buchwald–Hartwig amination was evaluated. In the presence of Pd(OAc)2 (0.03–1.0 mol%) associated with the newly developed a carbazolyl-derived
Cu(II)-Catalyzed Ortho C(sp<sup>2</sup>)–H Diarylamination of Arylamines To Synthesize Triarylamines
作者:Mohit Kumar、Rishabh Sharma、Raziullah、Afsar Ali Khan、Ashfaq Ahmad、Himangsu Sekhar Dutta、Dipankar Koley
DOI:10.1021/acs.orglett.0c00196
日期:2020.3.20
copper-catalyzed, directed ortho C-H diarylamination of indoles, indolines, anilines, and N-aryl-7-azaindoles has been established. Only copper salt as the catalyst and oxygen as the terminal oxidant are used to synthesize triarylamines using various diarylamines including carbazole and phenothiazine. Mechanistic interrogation reveals that copper plays a dual role.
The present teachings relate to organic semiconductor formulations including an organic semiconducting compound in a liquid medium, where the liquid medium includes (1) a compound in liquid state that has electronic properties complementary to the electronic structure of the organic semiconducting compound and optionally (2) a solvent or solvent mixture for solubilizing the organic semiconducting compound. The present formulations can be used as inks in the fabrication of organic semiconductor devices.