- NOVEL ORGANIC COMPOUND AND MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES COMPRISING THE SAME AND ORGANIC ELECTROLUMINESCENT DEVICES COMPRISING THE SAME
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The present invention provides a novel organic compound represented by chemical formula 1, a material for an organic electroluminescent device including the organic compound, and an organic electroluminescent device. The present invention can improve thermal stability, color purity, and device life.
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Paragraph 0230-0234
(2020/11/24)
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- Syntheses of Benzofuranoquinolines and Analogues via Photoinduced Acceptorless Dehydrogenative Annulation of o-Phenylfuranylpyridines
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A strategy for the syntheses of benzofuranoquinolines and its analogues via the irradiation of o-phenylfuranyl/thienylpyridines/pyrimidines in DCM with UV light at rt under an argon atmosphere is described. The mechanism of this reaction through the proce
- Fan, Jinming,Zhang, Wei,Gao, Wangxi,Wang, Tao,Duan, Wei-Liang,Liang, Yong,Zhang, Zunting
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supporting information
p. 9183 - 9187
(2019/11/13)
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- Silver-Catalyzed Minisci Reactions Using Selectfluor as a Mild Oxidant
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A new method for silver-catalyzed Minisci reactions using Selectfluor as a mild oxidant is reported. Heteroarenes and quinones both participate in radical C-H alkylation and arylation from a variety of carboxylic and boronic acid radical precursors. Several oxidatively sensitive and highly reactive radical species are successful, providing structures that are challenging to access by other means.
- Galloway, Jordan D.,Mai, Duy N.,Baxter, Ryan D.
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supporting information
p. 5772 - 5775
(2017/11/10)
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- Iron-mediated direct arylation with arylboronic acids through an aryl radical transfer pathway
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A novel iron-mediated direct C-H arylation of quinones and pyridine analogues with arylboronic acids has been developed using dichloromethane and water as solvents at ambient temperature. FeS is employed and serves as an efficient catalyst. A detailed reaction mechanism is speculated and expounded.
- Wang, Jian,Wang, Shan,Wang, Gao,Zhang, Ji,Yu, Xiao-Qi
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supporting information
p. 11769 - 11771
(2013/01/15)
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- A Pd(II)-catalyzed ring-expansion reaction of cyclic 2-azidoalcohol derivatives: Synthesis of azaheterocycles
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(Chemical Equation Presented) A Pd(II)-catalyzed ring expansion-reaction of cyclic 2-azidoalcohol derivatives was found to proceed via an unprecedented C-C bond cleavage-C-N bond formation sequence, providing substituted azaheterocycles.
- Chiba, Shunsuke,Xu, Yan-Jun,Wang, Yi-Feng
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supporting information; experimental part
p. 12886 - 12887
(2009/12/06)
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- Novel CDK inhibition profiles of structurally varied 1-aza-9-oxafluorenes
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A series of 1-aza-9-oxafluorenes with functionally varied 3-substituents have been prepared from N-phenoxycarbonyl-4-phenyl-1,4-dihydropyridines and p-benzoquinone and biologically evaluated as inhibitors of various cyclin-dependant kinases. The absence o
- Voigt, Burkhardt,Meijer, Laurent,Lozach, Olivier,Sch?chtele, Christoph,Totzke, Frank,Hilgeroth, Andreas
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p. 823 - 825
(2007/10/03)
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- Regioselective Addition ofd Copper-Zinc Aryl Organometallic Reagents to 3-substituted Pyridinium Salts
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A number of 3-substituted pyridinium salts are subjected to nucleophilic addition by copper-zinc aryl organometallic reagents.The adducts are oxidized subsequently to form the corresponding 4-arylpyridines.In all the cases 1,4-addition products are obtained predominantly.The regioselectivity can be rationalized according to the hard-soft acid-base principle.Calculations on both charge distributions and FMO coefficients indicate that these reactions may be classified on the basis of the type of soft acid-soft base reactions.The observed γ-attack complies very well with the orientation of the FMO coefficients as estimated by a semiempirical method.
- Shiao, Min-Jen,Chia, Win-Long,Shing, Tai-Li,Chow, Tahsin J.
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p. 2101 - 2121
(2007/10/02)
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- Regioselective Arylation of 3-Bromopyridine
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The addition of aryl Grignard reagents to the 1-phenoxycarbonyl salt of 3-bromopyridine affords 2-aryl-5-bromo-1-phenoxycarbonyl-1,2-dihydropyridines and 4-aryl-3-bromo-1-phenoxycarbonyl-1,4-dihydropyridines.The crude dihydropyridines were aromatized with o-chloranil in refluxing toluene to give 4- and 6-aryl-3-bromopyridines.The regioselectivity of this two-step process, 6- vs. 4-substitution, was examined and found to be dependent upon the structure of the Grignard reagent.Unhindered aryl Grignard reagents, e.g., phenyl and 2-naphthyl, gave mainly 6-aryl-3-bromopyridines (49-52percent) along with 9percent of the 4-substituted isomer and less than 4percent of the 2-aryl-3-bromopyridine.Hindered aryl Grignard reagents, e.g., o-tolyl and 1-naphthyl, are less regioselective.When a catalytic amount of cuprous iodide is present during the Grignard reaction, nearly exclusive 1,4-addition results.The crude 4-aryl-3-bromo-1,4-dihydropyridines were aromatized with p-chloranil to provide 4-aryl-3-bromopyridines in good yield and high isomeric purity.The sequential use of the cuprous iodide-catalyzed Grignard reaction and the "normal" Grignard reaction provided a regiospecific synthesis of 3-bromo-6-(p-methoxyphenyl)-4-phenylpyridine from 3-bromopyridine.
- Comins, Daniel L.,Mantlo, Nathan B.
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p. 1239 - 1243
(2007/10/02)
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