Simple inorganic base promoted C–N and C–C formation: synthesis of benzo[4,5]imidazo[1,2-<i>a</i>]pyridines as functional AIEgens used for detecting picric acid
作者:Kai Yang、Shi-He Luo、Si-Hong Chen、Xi-Ying Cao、Yong-Jun Zhou、Yan-Lan Lin、Yan-Ping Huo、Zhao-Yang Wang
DOI:10.1039/d1ob01424b
日期:——
Metal-free catalyzed intermolecular tandem Michaeladdition/cyclization has been developed for the synthesis of benzo[4,5]imidazo[1,2-a]pyridines from α-bromocinnamaldehyde and 2-substituted benzimidazoles. The reaction promoted by a simple inorganic base displays moderate to good yields and good functional group tolerance. The optical properties of some typical products have been investigated. We
无金属催化分子间串联迈克尔加成/环化已被开发用于从 α-溴肉桂醛和 2-取代苯并咪唑合成苯并[4,5]咪唑并[1,2- a ]吡啶。由简单的无机碱促进的反应显示出中等至良好的产率和良好的官能团耐受性。研究了一些典型产品的光学特性。我们发现,由于苯并[4,5]咪唑并[1,2- a ]吡啶的C1位存在限制分子内运动的苯环,作为一种新型的聚集诱导发射(AIE) luminogen (AIEgen),它们显示出非常好的固态荧光,量子产率高达 88.80%。重要的是,化合物3b的 AIE 性能可用于检测硝基芳香炸药苦味酸 (PA),检测限和淬灭常数分别为 42.5 nM 和 7.27 × 10 4 M -M。
previously reported. Although most of the benzimidazole derivatives showed strong inhibitory activity in low micromolar potency, 2-(4-methoxybenzyl)-1H-benzo[d]imidazole (3m; IC50 = 1.7 μM) and 2-(2-methoxybenzyl)-1H-benzo[d]imidazole (3n; IC50 = 2.4 μM) showed the best inhibition. The structure activity relationship revealed that 2-benzylbenzimidazole scaffold with hydrogen bonding acceptor on phenyl
为了找到新的核因子κB活性抑制剂,合理设计,合成和系统研究了一系列苯并咪唑衍生物对RAW 264.7细胞中LPS诱导的NF-κB抑制的体外活性,基于基于柔性查尔酮JSH的SEAP分析(先前报道的((E)-1-(2-羟基-6-(异戊氧基)苯基)-3-(4-羟基苯基)丙-2-烯-1-酮)。尽管大多数苯并咪唑衍生物在低微摩尔浓度下均显示出强大的抑制活性,但是2-(4-甲氧基苄基)-1 H-苯并[ d ]咪唑(3m; IC 50 = 1.7μM)和2-(2-甲氧基苄基)-1 H-苯并[ d ]咪唑(3n ; IC50 = 2.4μM)表现出最好的抑制作用。结构活性关系表明,在苯环上带有氢键受体的2-苄基苯并咪唑支架以药效团的形式出现。
Synthesis of Some New Benzimidazole Derivatives with their Antioxidant Activities
In this paper, some benzimidazole derivatives containing salicyl, oxadiazole,
thiosemicarbazide and 1, 2, 4-triazole moieties have been synthesized and screened their antioxidant
activities screened. Antioxidant activities of the synthesized compounds were tested with DPPH and
ABTS•+ radical cation decolorization assays. Compounds 4b, 6a, 6b, 7a and 7b showed very good
scavenging activity.
[EN] COMPOUND AND AN ORGANIC SEMICONDUCTING LAYER, AN ORGANIC ELECTRONIC DEVICE AND A DISPLAY OR LIGHTING DEVICE COMPRISING THE SAME<br/>[FR] COMPOSÉ ET COUCHE SEMI-CONDUCTRICE ORGANIQUE, DISPOSITIF ÉLECTRONIQUE ORGANIQUE ET DISPOSITIF D'AFFICHAGE OU D'ÉCLAIRAGE LE COMPRENANT
申请人:NOVALED GMBH
公开号:WO2020165149A1
公开(公告)日:2020-08-20
The present invention relates to a compound having the formula (I); and an organic semiconducting layer, an organic electronic device, a display device and a lighting device comprising the same.