AbstractA convenient and efficient method for the borylation of diaryl ethers leading to dibenzoxaborininols and the synthesis of dibenzofuran derivatives has been developed. The borylation involves the sequential three‐step process: lithiation, borylation and hydrolysis. The synthesized dibenzoxaborininols could be readily transformed into dibenzofuran derivatives in good to excellent yields under palladium catalysis in the presence of iodine, and this is the first example for the formation of an aryl CC bond from diarylborinic acids.magnified image
ORGANIC COMPOUND, ORGANIC ELECTRONIC DEVICE USING SAME, AND TERMINAL FOR SAME
申请人:Kim Dongha
公开号:US20120217492A1
公开(公告)日:2012-08-30
Disclosed are an organic compound, an organic electronic device using the same, and a terminal thereof.
揭示了一种有机化合物,使用该化合物的有机电子器件以及其终端。
SECONDARY HOLE TRANSPORTING LAYER WITH DIARYLAMINO-PHENYL-CARBAZOLE COMPOUNDS
申请人:Kwong Raymond
公开号:US20130241401A1
公开(公告)日:2013-09-19
Novel diarylamino phenyl carbazole compounds are provided. By appropriately selecting the nature of the diarylamino substituent and the substitution on the carbazole nitrogen, compounds with appropriate HOMO and LUMO energies can be obtained for use as materials in a secondary hole transport layer.
CF<sub>3</sub> Oxonium Salts, <i>O</i>-(Trifluoromethyl)dibenzofuranium Salts: In Situ Synthesis, Properties, and Application as a Real CF<sub>3</sub><sup>+</sup> Species Reagent
作者:Teruo Umemoto、Kenji Adachi、Sumi Ishihara
DOI:10.1021/jo070896r
日期:2007.8.31
We report in situ synthesis of the first CF3 oxonium salts, thermally unstable O-(trifluoromethyl)dibenzofuranium salts, which furthermore have different counteranions (BF4-, PF6-, SbF6-, and Sb2F11-) and ring substituents (tert-butyl, F, and OCH3), by photochemical decomposition of the corresponding 2-(trifluoromethoxy)biphenylyl-2‘-diazonium salts at −90 to −100 °C. The yields markedly increased in
Photoinduced Synthesis of Dibenzofurans: Intramolecular and Intermolecular Comparative Methodologies
作者:Patricia Camargo Solórzano、Federico Brigante、Adriana B. Pierini、Liliana B. Jimenez
DOI:10.1021/acs.joc.8b00742
日期:2018.8.3
The SRN1 reaction has been used as a powerful tool for the synthesis of heterocycles, and only a few studies about photoinduced intramolecular cyclization to generate a new C–O bond by a radical pathway have been reported. This work introduces two strategies for the synthesis of substituted dibenzofurans by electron transfer (eT) reactions. The first one is a three-step process that comprises bromination
S RN 1反应已被用作合成杂环的有力工具,并且仅报道了少数有关通过自由基途径光诱导分子内环化以生成新的C-O键的研究。这项工作介绍了两种通过电子转移(eT)反应合成取代的二苯并呋喃的策略。第一个是三步过程,其中包括溴化o-芳基苯酚,Suzuki-Miyaura交叉偶联和光诱导的环化反应,以获得上述产物。第二种是无金属工艺,不需要任何光催化剂。测试了不同的溶剂,收率范围从低到中等。在两种方法之间建立了比较,表明第二种方法最适合合成二苯并呋喃。
Synthesis of Dibenzofurans by Palladium-Catalysed Tandem Denitrification/C-H Activation
作者:Zhenting Du、Jing Zhou、Changmei Si、Weili Ma
DOI:10.1055/s-0031-1289881
日期:2011.12
A palladium-catalysed method for intramolecular cyclisation of ortho-diazonium salts of diaryl ethers to give dibenzofurans is described. The protocol uses 3 mol% palladium acetate as the catalyst in refluxing ethanol in the absence of base. palladium acetate - dibenzofurans - diazonium salts