Metal-Free Oxidative C-H Amidation of<i>N</i>,<i>N′</i>-Diarylureas with PhI(OAc)<sub>2</sub>: Synthesis of Benzimidazol-2-one Derivatives
作者:Jipan Yu、Chang Gao、Zhixuan Song、Haijun Yang、Hua Fu
DOI:10.1002/ejoc.201500726
日期:2015.9
compounds or intramolecular N-arylations using substrates with carbon-halogen bonds. However, the starting materials of these protocols are often not readily available. Herein, a simple and practical metal-free oxidative C–H amidation of N,N′-diarylureas has been developed that takes place at room temperature. This protocol uses readily available N,N′-diarylureas as the starting materials and inexpensive
Potassium Hydroxide/Dimethyl Sulfoxide Promoted Intramolecular Cyclization for the Synthesis of Benzimidazol-2-ones
作者:Astrid Beyer、Christine M. M. Reucher、Carsten Bolm
DOI:10.1021/ol2008878
日期:2011.6.3
A new protocol for intramolecular N-arylations of ureas to form benzimidazol-2-ones has been developed. The cyclization reaction occurs In the presence of KOH and DMSO at close to ambient temperature. Under these conditions the yields are high and a wide range of functional groups are tolerated.
BIANCHI, M.;BUTTI, A.;ROSSI, S.;BARZAGHI, F.;MARCARIA, V., EUR. J. MED. CHEM.-CHIM. THER., 1981, 16, N 4, 321-326
作者:BIANCHI, M.、BUTTI, A.、ROSSI, S.、BARZAGHI, F.、MARCARIA, V.
DOI:——
日期:——
NITROGENATED HETEROCYCLIC DERIVATIVE, ELECTRON-TRANSPORTING MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENTS, AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
申请人:Mizutani Sayaka
公开号:US20130306955A1
公开(公告)日:2013-11-21
A specific nitrogen-containing heterocyclic compound having a urea structure, an electron transporting material containing the nitrogen-containing heterocyclic compound, and an organic electroluminescence device including a light emitting layer and an electron transporting layer between a cathode and an anode in which the electron transporting layer includes the electron transporting material or the nitrogen-containing heterocyclic derivative. An organic EL device exhibiting high emission efficiency even at low voltage and a material for organic EL devices are described.
ORGANIC LIGHT-EMITTING DEVICE
申请人:Samsung Display Co., Ltd.
公开号:US20170047521A1
公开(公告)日:2017-02-16
An organic light-emitting device having high efficiency and improved lifespan is provided. The organic light-emitting device of the present disclosure includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode, the emission layer including a first compound; and an electron transport region between the emission layer and the second electrode, the electron transport region including an electron transport layer including a second compound and an electron control layer including a third compound, wherein the electron control layer is between the emission layer and the electron transport layer. The first compound may be represented by Formula 1, the second compound may be represented by Formula 2, and the third compound may be selected from compounds represented by Formula 1 and/or Formula 2: