Synthesis of Dibenzothiophenes and Related Classes of Heterocycles by Using Functionalized Dithiocarbamates
作者:Marcel Kienle、Andreas Unsinn、Paul Knochel
DOI:10.1002/anie.201001025
日期:2010.6.28
A round trip: Readily available dithiocarbamates can undergo ringclosure to give functionalized sulfurheterocycles (see scheme). These heteroaromatic compounds can be further functionalized by directed alumination and subsequently trapped with various electrophiles.
Synthesis of [1]benzothiopheno[2,3-b][1]benzothiophene derivatives through iodine-mediated sulfuration reaction of 1,1-diarylethylenes
作者:Shuta Sakai、Kazuki Sato、Kazuhiro Yoshida
DOI:10.1016/j.tetlet.2019.151476
日期:2020.2
Acceleration of the reaction for the synthesis of [1]benzothiopheno[2,3-b][1]benzothiophenes (BTBTs) from 1,1-diarylethylenes was accomplished by the addition of molecular iodine. Postulated intermediates 3-arylbenzo[b]thiophenes were also selectively prepared by simply changing the amount of iodine and the reaction time.
Unusual thiophilic ring-opening of fused oligothiophenes with organolithium reagents
作者:Konstantin Chernichenko、Nikolai Emelyanov、Ilya Gridnev、Valentine G. Nenajdenko
DOI:10.1016/j.tet.2011.06.082
日期:2011.9
Organolithium reagents attack the sulfur atoms of fused oligothiophenes producing ring-openedorganolithium intermediates that can be trapped with a suitable electrophile. The reaction was found to be general for fused thieno[2,3-b]-thiophenes and some [3,2-b]-fused oligothiophenes. Thermodynamic (organilithiums basicity) and mechanistic (RLi coordination by neighboring sulfur) aspects control the
有机锂试剂攻击稠合的低聚噻吩的硫原子,产生可被合适的亲电试剂捕获的开环有机锂中间体。发现该反应对于稠合噻吩并[2,3- b ]-噻吩和某些[3,2- b ] -融合的低聚噻吩是普遍的。热力学(有机锂的碱度)和机理(RLi通过相邻硫的配位)方面控制反应的底物范围和区域选择性。当可以使底物竞争性去质子化时,与其他测试的有机锂相比,使用n -BuLi可观察到对开环的高选择性。最近发现的八硫代[8]环戊烯可产生多种开环产物。
ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
申请人:Universal Display Corporation
公开号:US20190074449A1
公开(公告)日:2019-03-07
Compounds that are organic radicals that can have a dual function. The compounds can be fluorescent emitters that emit in the near-IR. The compounds can also facilitate reverse intersystem crossing (RISC) to convert triplet excitons in an OLED to singlet excited states to maximize utilization of generated excitons in the OLED and approach 100% internal quantum efficiency.
Organic semiconductor materials using stacking-inducing compounds, compositions comprising such materials, organic semiconductor thin films formed using such compositions, and organic electronic devices incorporating such thin films
申请人:Jeong Eun Jeong
公开号:US20070287220A1
公开(公告)日:2007-12-13
Disclosed are organic semiconductor materials, including mixtures of relatively low molecular weight aromatic ring compounds, in which at least one nitrogen atom or oxygen atom is present as a heteroatom in the aromatic ring compounds for forming hydrogen bonds between the heteroatom(s) and adjacent molecules and thereby increase intermolecular stacking. Organic semiconductor layers formed using such organic semiconductor materials will, accordingly, exhibit increased intermolecular stacking and associated improvements in one or more electrical properties of the semiconductor layer. Organic thin film transistors incorporating such organic semiconductor layers will tend to exhibit improved transistor properties including, for example, increased carrier mobility and reduced off-state leakage current. Further, the organic semiconductor layers may be manufactured using conventional room temperature processes, for example, spin coating or printing, thereby simplifying the fabrication process.