34658-66-7Relevant academic research and scientific papers
Reducing Defects Density and Enhancing Hole Extraction for Efficient Perovskite Solar Cells Enabled by π-Pb2+ Interactions
Li, Ming,Li, Ruitao,Pang, Shuping,Rao, Yi,Wang, Li,Wen, Lirong,Zhan, Jingbo,Zhang, Linbao,Zhou, Zhongmin,Zhu, Mingzhe
, p. 17356 - 17361 (2021)
Molecular doping is an of significance approach to reduce defects density of perovskite and to improve interfacial charge extraction in perovskite solar cells. Here, we show a new strategy for chemical doping of perovskite via an organic small molecule, w
Synthetic method of imidazopyridine compounds
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Paragraph 0056; 0065-0068, (2021/03/24)
The invention provides a novel method for synthesizing imidazopyridine compounds. According to the invention, aminopyridine compounds and sulfur ylide are used as original reaction substrates, iron phthalocyanine (FeIIPc) is used as a catalyst, and a series of the imidazopyridine compounds are obtained under the condition that the advantages of mildness, greenness, high efficiency, wide substrateuniversality and the like are achieved.
SUBSTITUTED DIAZAHETERO-BICYCLIC COMPOUNDS AND THEIR USE
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Paragraph 0519-0522; 0531, (2021/01/29)
The present application relates to novel (imidazo[1,2-a]pyridin-3-yl)methyl-substituted diazaheterobicyclic compounds, to processes for preparation thereof, to the use thereof alone or in combinations for treatment and/or prevention of diseases, and to th
Solvent and catalyst-free synthesis of imidazo[1,2-a]pyridines by grindstone chemistry
Godugu, Kumar,Nallagondu, Chinna Gangi Reddy
, p. 250 - 259 (2020/10/23)
The present work describes the solvent and catalyst-free synthesis of imidazo[1,2-a]pyridines in excellent to nearly quantitative yields from 2-aminopyridines and a wide variety of ω-bromomethylketones using a grindstone procedure at 25°C to 30°C for 3 to
Oxidation Potential-Guided Electrochemical Radical-Radical Cross-Coupling Approaches to 3-Sulfonylated Imidazopyridines and Indolizines
Kim, Wansoo,Kim, Hun Young,Oh, Kyungsoo
, p. 15973 - 15991 (2021/07/26)
Oxidation potential-guided electrochemical radical-radical cross-coupling reactions between N-heteroarenes and sodium sulfinates have been established. Thus, simple cyclic voltammetry measurement of substrates predicts the likelihood of successful radical-radical coupling reactions, allowing the simple and direct synthetic access to 3-sulfonylated imidazopyridines and indolizines. The developed electrochemical radical-radical cross-coupling reactions to sulfonylated N-heteroarenes boast the green synthetic nature of the reactions that are oxidant- and metal-free.
Micellar Catalysis: Visible-Light Mediated Imidazo[1,2-a]pyridine C—H Amination with N-Aminopyridinium Salt Accelerated by Surfactant in Water
Yang, Zhonglie,Cao, Kun,Peng, Xiaoyan,Lin, Li,Fan, Danchen,Li, Jun-Long,Wang, Jingxia,Zhang, Xiaobin,Jiang, Hezhong,Li, Jiahong
supporting information, p. 3347 - 3352 (2021/10/20)
A light-promoted metal-free protocol for the amination of imidazo[1,2-a]pyridines with N-aminopyridinium salt by the assistance of surfactants in water was reported, charactering mild and environmentally benign conditions, as well as great functional grou
Molecular iodine enabled generation of iminyl radicals from oximes: A facile route to imidazo[1,2-a]pyridines and its regioselective C-3 sulfenylated products from simple pyridines
Singh, Deepak,Chowdhury, Soumyadeep Roy,Pramanik, Shyamal,Maity, Soumitra
, (2021/04/22)
An iodine promoted simple and environment friendly protocol has been developed to access imidazo[1,2-a]pyridines from unfunctionalized pyridines and oxime esters. This straightforward method efficiently converts the substrates into corresponding products affording moderate to good yields with large functional group tolerance. Additionally extensive investigation revealed that regioselective domino C-3 methyl sulfenylated imidazo[1,2-a]pyridines were also accessible first time from pyridines and oxime esters in DMSO solvent. The reaction operates through metal-free generation of iminyl radicals from easily accessible oxime esters, to build up the second heterocyclic ring on pyridines.
SELECTIVE LIGANDS OF HUMAN CONSTITUTIVE ANDROSTANE RECEPTOR
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Page/Page column 17; 22, (2020/11/12)
The present invention provides a structurally novel class of heterocyclic compounds of general formula I wherein L1 is heteroaryl and L2 is heteroaryl or aryl. The novel compounds are useful in a method of prevention or treatment of a condition which is m
Imidazo nitrogen heterocyclic electron transport material and preparation method and application thereof
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Paragraph 0060-0062; 0068-0070; 0072-0074; 0076-0078, (2020/02/27)
The invention relates to an imidazo nitrogen heterocyclic electron transport material and a preparation method and application thereof, and belongs to the technical field of preparation and application of organic photoelectric materials. The imidazo nitrogen heterocyclic electron transport material has a structure as shown in a general formula I. The invention provides the imidazo nitrogen heterocyclic electron transport material with a novel structure. Compared with an organic light-emitting device prepared by using a comparative example compound Alq3 as an electron transport layer, an organic light-emitting device prepared by using the compound provided by the invention as an electron transport layer has the advantages that the driving voltage and the current density are obviously reduced, the light-emitting efficiency is obviously improved, and the service life is obviously prolonged. The preparation method of the imidazo nitrogen heterocyclic electron transport material provided bythe invention is simple and feasible in synthesis process and high in product purity.
Microwave-assisted synthesis and luminescent activity of imidazo[1,2-a]pyridine derivatives
Rodríguez, Juan C.,Maldonado, Rony A.,Ramírez-García, Gonzalo,Díaz Cervantes, Erik,de la Cruz, Fabiola N.
supporting information, p. 2279 - 2287 (2020/03/16)
In this work, a series of phenacyl bromide derivatives was synthesized and employed as key intermediate for the synthesis of substituted imidazo[1,2-a]pyridines. First, phenacyl bromide molecules were obtained from the bromination reaction of acetophenones assisted by microwave irradiation, obtaining the products 4a-v in a 15 minutes reaction with yields in the range of 50% to 99%. Subsequently, the conjugation of these molecules with 2-aminopyridine conduced to the production of imidazo[1,2-a]pyridine derivatives (7a-v) in a 60-second reaction with yields of 24% to 99%. Improved yields were determined with respect to those obtained with more tedious methodologies like thermally and mechanically assisted routes. Intense luminescence emissions in the purple and blue regions of the electromagnetic spectra were observed under UV excitation according to the nature of the substituents. This environmentally friendly methodology is expected to constitute an important class of organic compounds for the development of biomarkers, photochemical sensors, and medicinal applications.
