217-65-2Relevant articles and documents
Site-selective synthesis of functionalized dibenzo[: F, h] quinolines and their derivatives involving cyclic diaryliodonium salts via a decarboxylative annulation strategy
Yang, Shuai,Hua, Wenkai,Wu, Yanqi,Hu, Tao,Wang, Feng,Zhang, Xingxian,Zhang, Fengzhi
, p. 3239 - 3242 (2018)
Here we report a site-selective synthesis of functionalized dibenzo[f,h]quinolines and their derivatives, which could be used as OLED materials. The key step is the double cross coupling reaction between the 2-chloropyridinyl acids and the cyclic diaryliodonium salts, where the carboxylic acid was unprecedentedly employed as both a traceless directing group and a functional handle in a one-pot atom- and step-economical process.
Homologation of the Fischer Indolization: A Quinoline Synthesis via Homo-Diaza-Cope Rearrangement
De, Chandra Kanta,Gerosa, Gabriela Guillermina,List, Benjamin,Maji, Rajat,Schwengers, Sebastian Armin
supporting information, p. 20485 - 20488 (2020/09/09)
We disclose a new Br?nsted acid promoted quinoline synthesis, proceeding via homo-diaza-Cope rearrangement of N-aryl-N′-cyclopropyl hydrazines. Our strategy can be considered a homologation of Fischer's classical indole synthesis and delivers 6-membered N-heterocycles, including previously inaccessible pyridine derivatives. This approach can also be used as a pyridannulation methodology toward constructing polycyclic polyheteroaromatics. A computational analysis has been employed to probe plausible activation modes and to interrogate the role of the catalyst.
Synthesis of Redox-Active Phenanthrene-Fused Heteroarenes by Palladium-Catalyzed C-H Annulation
Jang, Jin Hyeok,Ahn, Seongmo,Park, Soo Eun,Kim, Soeun,Byon, Hye Ryung,Joo, Jung Min
supporting information, p. 1280 - 1285 (2020/02/28)
Pd-catalyzed C-H annulation reactions of halo- and aryl-heteroarenes were developed using readily available o-bromobiaryls and o-dibromoaryls, respectively. A variety of five-membered heteroarenes rapidly provided the corresponding phenanthrene-fused heteroarenes, which led to the identification of phenanthro-pyrazole and thiazole as new, stable -2 V redox couples. The flexible syntheses and tunability of the redox potentials of these azole-fused phenanthrenes over a wide range are expected to facilitate their application as redox-active organic functional materials.
Method for synthesizing triphenylene compound
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Paragraph 0023; 0024; 0025; 0035; 0036; 0037; 0065-0067, (2017/12/28)
The invention provides a method for synthesizing a triphenylene compound represented by a formula (III) shown in the description. The method comprises the steps: dissolving a benzoic acid compound represented by a formula (I) shown in the description, a cyclic iodine onium salt represented by a formula (II) shown in the description, palladium acetate and potassium carbonate in N-methyl pyrrolidone, heating the temperature of the solution to 110 DEG C to 145 DEG C, carrying out a reaction for 6 to 17 hours with stirring, then, subjecting the reacted solution to aftertreatment, thereby obtaining the triphenylene compound. According to the method, the reaction system is simple, the raw materials, particularly the benzoic acid compound are easily obtained, and a substrate is not required to be prepared by multiple steps, so that the reaction yield of the method is relatively high; and the triphenylene is obtained through a one-step reaction between the benzoic acid compound and the cyclic iodine onium salt, so that the reaction route is greatly shortened, and the yield of the obtained corresponding triphenylene compound is 93% to the maximum.
GREEN PHOSPHORESCENT IRIDIUM COMPLEXES, FABRICATION METHOD THEREOF AND ORGANIC LIGHT-EMITTING DIODES COMPRISING THE SAME
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, (2011/01/05)
A green phosphorescent iridium complex represented by Formula (I) is provided. In Formula (I), R1, R2 and R3 are, independently, hydrogen, halogen, substituted or non-substituted C1-6 alkyl, C1-6 alkoxy, cycloalkyl, substituted or non-substituted aryl, amino or heteroaryl, and L is a heterocyclic ring containing N—N or N—O ligand. The invention also provides a method for fabricating the green phosphorescent iridium complex and an organic light-emitting diode including the green phosphorescent iridium complex.