30068-53-2Relevant academic research and scientific papers
LIGHT-EMITTING MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE, ORGANIC ELECTROLUMINESCENT DEVICE USING SAME, AND MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE
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Paragraph 0207-0211, (2021/01/28)
Disclosed are a fused compound having excellent emission wavelength control and luminous efficiency, a method for manufacturing the same, and an organic electronic device including the fused compound. Symmetric, asymmetric, and planar structures of the pr
Organic semiconductor photocatalyst can bifunctionalize arenes and heteroarenes
Ghosh, Indrajit,Khamrai, Jagadish,Savateev, Aleksandr,Shlapakov, Nikita,Antonietti, Markus,K?nig, Burkhard
, p. 360 - 366 (2019/08/15)
Photoexcited electron-hole pairs on a semiconductor surface can engage in redox reactions with two different substrates. Similar to conventional electrosynthesis, the primary redox intermediates afford only separate oxidized and reduced products or, more rarely, combine to one addition product. Here, we report that a stable organic semiconductor material, mesoporous graphitic carbon nitride (mpg-CN), can act as a visible-light photoredox catalyst to orchestrate oxidative and reductive interfacial electron transfers to two different substrates in a two- or three-component system for direct twofold carbon–hydrogen functionalization of arenes and heteroarenes. The mpg-CN catalyst tolerates reactive radicals and strong nucleophiles, is straightforwardly recoverable by simple centrifugation of reaction mixtures, and is reusable for at least four catalytic transformations with conserved activity.
A Heteroarylamine Library: Indium-Catalyzed Nucleophilic Aromatic Substitution of Alkoxyheteroarenes with Amines
Yonekura, Kyohei,Yoshimura, Yasuhiro,Akehi, Mizuri,Tsuchimoto, Teruhisa
, p. 1159 - 1181 (2018/02/06)
Under indium Lewis acid catalysis, electron-rich five-membered heteroaryl electrophiles fused with/without a benzene ring were found to couple with amines to produce heteroarylamines with broad structural diversity. The heteroarylamine formation proceeds through the cleavage of a heteroaryl?OMe bond by the nucleophilic attack of the amine based on the nucleophilic aromatic substitution (SNAr) reaction. In contrast to the corresponding traditional SNAr amination, the present SNAr-based heteroaryl amination can be performed without relying on both heteroaryl electrophiles with electron-withdrawing groups and nucleophilicity-enhanced metal amides. High compatibility towards the functional groups such as NO2, Br, I, CF3, CN, CO2Et, pyridyl, thiazolyl, C=C, and OH groups was observed, thus showing the practicality and reliability of this method. Mechanistic studies indicated that a carbon?indium bond is likely to be formed on the heteroaryl ring during the process. (Figure presented.).
Molecular wires using (Oligo)pyrroles as connecting units: An electron transfer study
Pfaff, Ulrike,Hildebrandt, Alexander,Schaarschmidt, Dieter,Rueffer, Tobias,Low, Paul J.,Lang, Heinrich
, p. 6106 - 6117 (2013/11/19)
A series of (oligo)pyrroles featuring redox-active terminal ferrocenyl groups (Fc2-(cC4H2NPh)n (4, n = 1; 9, n = 2; 16, n = 3; 20, n = 4)) has been prepared using a Negishi C,C cross-coupling reaction
Bromination and Chlorination of Pyrrole and Some Reactive 1-Substituted Pyrroles
Gilow, H. M.,Burton, D. Edward
, p. 2221 - 2225 (2007/10/02)
Monobromination of pyrrole and 1-methyl-, 1-benzyl-, and 1-phenylpyrrole with 1 mol of N-bromosuccinimide in tetrahydrofuran results in the regiospecific formation of the 2-bromopyrroles.A little disubstitution is observed.Similarly, brominations with 2, 3, or 4 mol of NBS form primarily the di-, tri-, and tetrabromopyrroles, respectively.The thermodynamically more stable 3-bromopyrroles are the major monobrominated products observed when bromine is used as the brominating agent due to isomerization of the 2-bromopyrroles with hydrogen bromide.These reaction mixtures are further complicated because of disproportionation reactions.Chlorination with N-chlorosuccinimide gave results similar to those for the bromination with NBS, but the reaction is not as selective.
