- Luminescent AuI-CuI triphosphane clusters that contain extended linear arylacetylenes
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Reactions of the [(tppm)Au3Cl3] [tppm = tris(diphenylphosphanyl)methane] precursor and CuI ions with a stoichiometric amount of the corresponding linear mono- [HC2(C 6H4)nC6
- Shakirova, Julia R.,Grachova, Elena V.,Melekhova, Anna A.,Krupenya, Dmitrii V.,Gurzhiy, Vladislav V.,Karttunen, Antti J.,Koshevoy, Igor O.,Melnikov, Alexei S.,Tunik, Sergey P.
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Read Online
- Synthesis of 4-Bromo-1,1′:4′,1″-terphenyl and 4-Methyl-1,1′:4′,1″-terphenyl
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Abstract: Possible synthetic routes to 4-bromo-1,1′:4′,1″-terphenyl and 4-methyl-1,1′:4′,1″-terphenyl have been studied. Stevens rearrangement of quaternary ammonium salts containing 3-phenylprop-2-en-1-yl and 3-(4-bromo- or 4-methylphenyl)prop-2-yn-1-yl
- Ayrapetyan, L. V.,Chukhajian, E. H.,Chukhajian, El. H.,Shahkhatuni, K. G.
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Read Online
- METHOD FOR PRODUCING HALOGEN COMPOUND
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PROBLEM TO BE SOLVED: To provide a method for efficiently producing an aromatic compound containing a halogen group(s). SOLUTION: Provided is a method for producing a halogen compound represented by the following general formula (1), comprising reacting an iodine compound represented by the following general formula (2) and a compound represented by the following general formula (3) in the presence of a transition metal compound, at least one phosphine compound selected from the group consisting of 1,1'-bis(diphenylphosphino)ferrocene and 4,5'-bis(diphenylphosphino)-9,9'-dimethylxanthene, and a base. (In the formula, Ar1 and Ar2 each independently represent a C1-40 organic group; X represents a bromine group, a chlorine group, a fluorine group, or a trifluoromethanesulfonate group, and when there are a plurality of X's, they may be the same or different; n represents an integer equal to or larger than 1; R's each independently represent a hydrogen atom, a C1-4 alkyl group, or a phenyl group, and two R's may be linked to form a ring containing oxygen atoms and a boron atom.) SELECTED DRAWING: None COPYRIGHT: (C)2021,JPOandINPIT
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Paragraph 0054-0060; 0075-0078; 0091-0093
(2021/09/29)
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- Modular and Selective Arylation of Aryl Germanes (C?GeEt3) over C?Bpin, C?SiR3 and Halogens Enabled by Light-Activated Gold Catalysis
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Selective C (Formula presented.) –C (Formula presented.) couplings are powerful strategies for the rapid and programmable construction of bi- or multiaryls. To this end, the next frontier of synthetic modularity will likely arise from harnessing the coupling space that is orthogonal to the powerful Pd-catalyzed coupling regime. This report details the realization of this concept and presents the fully selective arylation of aryl germanes (which are inert under Pd0/PdII catalysis) in the presence of the valuable functionalities C?BPin, C?SiMe3, C?I, C?Br, C?Cl, which in turn offer versatile opportunities for diversification. The protocol makes use of visible light activation combined with gold catalysis, which facilitates the selective coupling of C?Ge with aryl diazonium salts. Contrary to previous light-/gold-catalyzed couplings of Ar–N2+, which were specialized in Ar–N2+ scope, we present conditions to efficiently couple electron-rich, electron-poor, heterocyclic and sterically hindered aryl diazonium salts. Our computational data suggest that while electron-poor Ar–N2+ salts are readily activated by gold under blue-light irradiation, there is a competing dissociative deactivation pathway for excited electron-rich Ar–N2+, which requires an alternative photo-redox approach to enable productive couplings.
- Dahiya, Amit,Fricke, Christoph,Funes-Ardoiz, Ignacio,Gevondian, Avetik G.,Schoenebeck, Franziska,Sherborne, Grant J.
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supporting information
p. 15543 - 15548
(2020/06/22)
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- Nitrogen-containing compound, electronic element, and electronic device
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The invention provides a nitrogen-containing compound represented by a formula I, an electronic element and an electronic device, and belongs to the technical field of organic materials. The nitrogen-containing compound can improve the performance of an electronic component.
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Paragraph 0102-0104
(2020/05/01)
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- NOVEL COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present invention relates to a novel compound capable of improving efficiency, and low driving voltage and/or lifespan characteristics in an organic light emitting device, and to an organic light emitting device including the same. The novel compound is represented by chemical formula 1. In the chemical formula 1, R1 is a substituted or unsubstituted arylene group or a substituted or unsubstituted heterocyclic group, and Ar1 is a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group.COPYRIGHT KIPO 2019
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Paragraph 0164-0168
(2019/03/15)
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- ORGANIC COMPOUNDS, ORGANIC LIGHT EMITTING DIDOE AND LIGHT EMITTING DEVICE HAVING THE COMPOUNDS
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The present invention refers to an aromatic moiety triazine having excellent electron affinity, the specified moiety bonded organic compounds with [phul [phul] base five [leyn [leyn] cyber electronic receptor characteristics are disclosed. The organic compounds of the present invention, energy is not transmitted from the LED electronic mobile bed and implanted into host electronic OLEDs, direct delivery of electronic with a dopant implanted into light emitting OLEDs energy, apart from each other. OLEDs can be caused when energy is passed to the host electronic with a dopant to prevent extinction OLEDs, OLEDs can be protected against damage due to high energy of light-emitting material. The organic compounds of the present invention by applying electronic [...], can be blue, the cathode can be implementing light emitting element. (by machine translation)
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Paragraph 0162-0165
(2019/08/01)
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- Rapid Access to Bi- and Tri-Functionalized Dibenzofurans and their Application in Selective Suzuki–Miyaura Cross Coupling Reactions
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Syntheses of 1,2-, 1,3-, 1,4-, 1,8-, 2,4-, 3,4-, 4,8-, 1,2,4-, 1,2,8- and 1,3,4-functionalized dibenzofurans in few steps with good to excellent yields starting from dibenzofuran-1-ol or -4-ol are presented. These rapidly accessible bi- or tri-functionalized building blocks are of great interest for the synthesis of bioactive substances or functional material development. Furthermore, for intermediates containing both a bromine and a triflate moiety, a selective mono-substitution by means of Suzuki–Miyaura reaction (SMR) is described.
- Wern, Caroline,Ehrenreich, Christian,Joosten, Dominik,Stein, Thorsten vom,Buchholz, Herwig,K?nig, Burkhard
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p. 5644 - 5656
(2018/10/09)
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- Annular N-heterocycle double-carbene palladium coordination compound and preparation method and application thereof
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The invention discloses an annular N-heterocycle double-carbene palladium coordination compound and a preparation method and application thereof. 1,4-2(N-ethyl-benzimidazole onium methyl)-2,3,5,6-tetramethylbenzene arene salt is used as a precursor of the annular N-heterocycle double-carbene palladium coordination compound. The synthetic annular N-heterocycle double-carbene palladium coordinationcompound is used as a catalyst and used for catalyzing the cross-coupling reaction of carbon-carbon bonds. The preparation method of the annular N-heterocycle double-carbene palladium coordination compound comprises the steps that under nitrogen protection, 1,4-2(N-ethyl-benzimidazole onium methyl)-2,3,5,6-tetramethylbenzene arene salt and metal compounds are added to a reaction vessel according to a molar ratio of 1:(2-5), an organic solvent is added to the mixture, then reaction is conducted for 12-24 hours under the temperature of 0-100 DEG C, the mixture is filtered and subjected to etherdiffusion, and the annular N-heterocycle double-carbene palladium coordination compound is obtained. The prepared annular N-heterocycle double-carbene palladium coordination compound is mainly appliedto the technical field of catalysts.
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Paragraph 0036; 0037; 0038; 0039; 0040; 0041
(2018/04/26)
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- PRODUCING METHOD OF MONO-COUPLING BODY
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The present invention provides a producing method of a compound represented by the general formula (5): R1-Ar-X, which is characterized by bringing an aromatic compound represented by the general formula (1): R1-Ar-X' (in the formula, Ar, X and X', R1 has a definition the same as the specification and claims) into reaction with an organic boron compound represent by the general formula (2) to (4) in water and organic solvent, in the presence of water-soluble palladium and base. The producing method of this invention is capable of suppressing subgeneration of dicoupling body when providing a compound with two leaving groups to coupling reaction, and capable of selectively and easily obtain a mono-coupling body.
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Paragraph 0056; 0057; 0062; 0066
(2016/10/07)
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- ORGANIC COMPOUND AND COMPOSITION AND ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
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The present invention relates to an organic compound represented by chemical formula 1 and having a molecular weight of 750 or less, to a composition for an organic optoelectronic device containing the organic compound, to an organic optoelectronic device using the organic compound or the composition and to a display device comprising the organic optoelectronic device. In chemical formula 1, Z, L, R^1 or R^8 and n1 and n2 are the same as defined in the specification.COPYRIGHT KIPO 2016
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Paragraph 0279-0281
(2016/10/10)
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- Syntheses of p-terphenyls and 11,12-dihydroindeno[2,1-a]fluorene by one-pot benzannulation of Diels-Alder reactions of trans-1,2-dichloroethene and dienes
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A series of substituted p-terphenyls and 11,12-dihydroindeno[2,1-a]fluorene were successfully synthesized by one-pot benzannulation of Diels-Alder reaction with 1,2-dichloroethene as an acetylene equivalent dienophile. Two chlorine atoms could be good leaving groups to easily undergo subsequent elimination reactions of Diels-Alder products at a high temperature.
- Ho, Jinn-Hsuan,Lin, Yu-Chen,Chou, Li-Ting,Chen, Ying-Zhe,Liu, Wei-Qi,Chuang, Chao-Li
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p. 1991 - 1993
(2013/04/10)
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- Direct arylation of benzene with aryl bromides using high-temperature/high- pressure process windows: Expanding the scope of c-h activation chemistry
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A detailed investigation on the direct arylation of benzene with aryl bromides by using first-row transition metals under high-temperature/high- pressure (high-T/p) conditions is described. By employing a parallel reactor platform for rapid reaction screening and discovery at elevated temperatures, various metal/ligand/base combinations were evaluated for their ability to enable biaryl formation through C-H activation. The combination of cobalt(III) acetylacetonate and lithium bis(trimethylsilyl)amide was subjected to further process intensification at 200°C (15 bar), allowing a significant reduction of the catalyst/base loading and a dramatic increase in catalytic efficiency (turnover frequency) by a factor of 1000 compared to traditional protocols. The high-throughput screening additionally identified novel nickel-and copper-based metal/ligand combinations that favored an amination pathway competing with C-H activation, with the addition of ligands, such as 1,10-phenanthroline, having a profound influence on the selectivity. In addition to metal-based catalysts, high-T/p process windows were also successfully applied to transition-metal-free systems, utilizing 1,10-phenanthroline as organocatalyst. Copyright
- Pieber, Bartholomaeus,Cantillo, David,Kappe, C. Oliver
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supporting information; experimental part
p. 5047 - 5055
(2012/06/04)
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- NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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Provided are novel organic electroluminescent compounds, and organic electroluminescent devices comprising the same. Since the organic electroluminescent compounds exhibit high luminous efficiency in blue color, and excellent life property of the material, they may be used to manufacture OLEDs having very good operation life.
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- Asymmetric arylamine compounds and processes for making the same
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Novel asymmetric arylamine compounds useful as hole transport molecules (HTMs) incorporated into imaging members, such as layered photoreceptor devices, and improved chemical processes for making the same. The arylamine compounds increase the charge mobil
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- Javelin-, hockey stick-, and boomerang-shaped liquid crystals. Structural variations on p-quinquephenyl
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The ramifications of changing molecular geometry in a series of all-aromatic liquid crystals derived from p-quinquephenyl are reported. Substituting heterocyclic rings such as thiophene, oxadiazole, oxazole, or 1,3-phenylene into the p-quinquephenylene core affects molecular shape changes via the substituent's exocyclic bond angle. In general, we found that introducing nonlinearity into molecules depresses the melting transition temperature. The symmetric (boomerang-shaped) molecules, 2,5-bisbiphenyl-4-yl-1,3,4-oxadiazole, 2,5-bisbiphenyl-4-yl-oxazole, and 1,3-bisbiphenyl-4-yl-benzene, melt into isotropic phases showing small monotropic mesophases. By contrast, the asymmetric (hockey stick-shaped) mesogens, 2-terphenyl-4-yl-5-phenyl thiophene and 2-terphenyl-4-yl-5-phenyl-1,3,4-oxadiazole, exhibit more stable enantiotropic liquid crystalline phases. The hockey stick-shaped mesogens exhibit a smectic phase as well as a nematic phase. High-temperature X-ray determination of the smectic layer spacing gives an unambiguous picture of interdigitated, bilayerlike supramolecular architecture in the smectic phase. There are associated changes in the mesogen's electrostatic profile when a heterocycle is introduced into the quinquiphenylene framework (e.g., conjugation is perturbed). Our findings suggest that steric packing considerations dominate the phase preferences (nematic versus smectic phases). However, electronic considerations (conjugation) appear to control the range of mesomorphism in this new family of nonlinear liquid crystals.
- Dingemans, Theo J.,Murthy, N. Sanjeeva,Samulski, Edward T.
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p. 8845 - 8860
(2007/10/03)
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- Control of reactive site in Palladium-Catalyzed grignard Cross-Coupling of arenes containing both bromide and triflate
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Reaction of 4-bromophenyl triflate (1) with phenylmagnesium bromide in the presence of 5 mol % of PdCl2(dppp) gave 97% yield of 4-bromobiphenyl (2a), which was formed by selective replacement of triflate in 1 by phenyl. On the other hand, bromide in 1 was substituted with the phenyl Grignard reagent selectively by use of PdCl2(meo-mop)2 to give 4-biphenyl triflate (3a) in high yield. The selective substitution was demonstrated to take place at the oxidative addition step to a palladium(0) species in a stoichiometric reaction of 1 with palladium(0) phosphine complexes.
- Kamikawa, Takashi,Hayashi, Tamio
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p. 7087 - 7090
(2007/10/03)
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- Photocatalysis of Oligo(p-phenylenes). Photoreductive Production of Hydrogen and Ethanol in Aqueous Triethylamine
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Oligo(p-phenylenes) (OPP-n), p-terphenyl (OPP-3) to p-sexiphenyl (OPP-6), catalyze water-reductive H2 formation and reduction of concomitantly formed acetaldehyde to ethanol upon irradiation of heterogeneous suspensions in aqueous organic solution in the presence of triethylamine (TEA) and RuCl3.Colloidal Ru0 is photoformed in situ to work as an electron relay.The activity of OPP-n increases with the number of phenylene units except for the cases of OPP-3 and of the alkylated derivatives, where the net photocatalytic activities are higher, mainly due to the effective homogeneous catalysis, since their solubilities in the solvents employed are significantly larger.The homogeneous catalysis of OPP-3 leads not only to H2 evolution but also to effective formation of ethanol in the absence of colloidal Ru0, being accompanied by photo-Birch reduction of OPP-3.Dynamics studies of OPP-3 reveal that photocatalysis should be initiated by formation of the excited singlet state of OPP-3 (1OPP-3*, which is reductively quenched by TEA at a rate controlled by diffusion to produce the OPP-3 radical anion (OPP-3.-) and the TEA radical cation (TEA.+).From laser flash photolysis and pulse radiolysis experiments, it is concluded that electron transfer from OPP-3.- leads to effective reduction of water to H2 catalyzed by Ru0 colloid.Furthermore, it is confirmed that OPP-3.- gives electrons directly to acetaldehyde without any electron relays like colloidal metals, resulting in the formation of ethanol.During photocatalysis, OPP-3 itself undergoes photo-Birch reduction to some extent.
- Matsuoka, Shinjiro,Fujii, Hiroyuki,Yamada, Taisuke,Pac, Chyongjin,Ishida, Akito,et al.
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p. 5802 - 5808
(2007/10/02)
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