- Red phosphorescent compound and organic electroluminescence device employing same
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The invention discloses a red phosphorescent compound and an organic electroluminescence device employing the same. The structural formula of the red phosphorescent compound is as shown in the description, wherein formula represents formula, and R1, R2, R3 and R4 are independently selected from one of H and C1-C6 alkyl; in the formula (I), formula represents special alkyl diketone and derivativesthereof. The organic electroluminescence device comprises an anode, a hole injection layer, a hole transfer layer, a luminescent layer, an electron transfer layer, an electron injection layer and a cathode which are successively deposited. The organic electroluminescence device comprises the red phosphorescent compound as a doping agent. According to the red phosphorescent compound provided by theinvention, the organic electroluminescence device is high in efficiency, high in color purity and narrow in spectrum.
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Paragraph 0052-0054
(2019/02/04)
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- Pd-Catalyzed Alkylation of (Iso)quinolines and Arenes: 2-Acylpyridine Compounds as Alkylation Reagents
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The first Pd-catalyzed alkylation of (iso)quinolines and arenes is reported. The readily available and bench-stable 2-acylpyridine compounds were used as an alkylation reagent to form the structurally versatile alkylated (iso)quinolines and arenes. The method affords a convenient pathway for the introduction of alkyl groups into organic molecules.
- Wu, Qingsong,Han, Shuaijun,Ren, Xiaoxiao,Lu, Hongtao,Li, Jingya,Zou, Dapeng,Wu, Yangjie,Wu, Yusheng
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supporting information
p. 6345 - 6348
(2018/10/20)
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- High-purity 2-(3, 5-dimethylphenyl)-6-isobutyl quinoline synthesis method
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The invention discloses a high-purity 2-(3, 5-dimethylphenyl)-6-isobutyl quinoline synthesis method. The method comprises S1, preparing 6-isobutyl quinoline as a first intermediate, S2, preparing 2-(3, 5-dimethylphenyl)-6-isobutyl-1, 2-dihydro-quinoline as a second intermediate, S3, dissolving the 2-(3, 5-dimethylphenyl)-6-isobutyl-1, 2-dihydro-quinoline in a solvent, heating the solution to a temperature of 60 DEG C, adding an oxidizing agent into the solution for a reaction at a temperature of 0-100 DEG C, then cooling the product to a temperature of 0 DEG C, carrying out filtration when a lot of solids are separated and carrying out drying to obtain a finished product. The method can realize industrial production of high-purity 2-(3, 5-dimethylphenyl)-6-isobutyl quinoline, has a cost lower than that of the prior art and has a good market promotion prospect. The synthesis method is free of a purification process, reduces an organic waste yield in manufacture, saves resources and protects the environment.
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Paragraph 0030; 0031; 0032; 0033; 0034; 0035
(2017/02/09)
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- General copper-catalyzed coupling of alkyl-, aryl-, and alkynylaluminum reagents with organohalides
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We report the first example of a very general Cu-catalyzed cross-coupling of organoaluminum reagents with organohalides. The reactions proceed for the couplings of alkyl-, aryl-, and alkynylaluminum reagents with aryl and heteroaryl halides and vinyl bromides, affording the cross-coupled products in good to excellent yields. Both primary and secondary alkylaluminum reagents can be utilized as organometallic coupling partners. These reactions are not complicated by β-hydride elimination, and as a result rearranged products are not observed with secondary alkylaluminum reagents even for couplings with heteroaryl halides under "ligand-free" conditions. Radical clock experiment with a radical probe and relative reactivity study of Ph3Al with two haloarenes, 1-bromonaphthalene and 4-chlorobenzonitrile, having two different redox potentials indicates that the reaction does not involve free aryl radicals and radical anions as intermediates. These results combined with the result of the Hammett plot obtained by reacting Ph3Al with iodoarenes containing p-H, p-Me, p-F, and p-CF3 substituents, which shows a linear curve (R2 = 0.99) with a ρ value of +1.06, suggest that the current transformation follows an oxidative addition-reductive elimination pathway.
- Shrestha, Bijay,Thapa, Surendra,Gurung, Santosh K.,Pike, Ryan A. S.,Giri, Ramesh
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p. 787 - 802
(2016/02/18)
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