- Highly Active Fe3O4@SBA-15@NHC-Pd Catalyst for Suzuki–Miyaura Cross-Coupling Reaction
-
A novel Pd-NHC functionalized magnetic Fe3O4@SBA-15@NHC-Pd was synthesized and used as an efficient heterogeneous catalyst in the Suzuki–Miyaura C–C bond formation reactions. The Fe3O4@SBA-15@NHC-Pd characterized by X-Ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy?(TEM), Energy Dispersive X-ray analysis (EDX), Thermogravimetric Analysis (TGA), Differential Thermal Analysis (DTA). The Inductively Coupled Plasma-Optical emission spectroscopy (ICP-OES)?analysis was used to determine the exact amount of Pd (0.33?wt%) in Fe3O4@SBA-15@NHC-Pd. The TEM images of the catalyst showed the existence of palladium nanoparticles immobilized in the catalyst's structure, while no reducing agent was used. The NHC moieties in the catalyst structure could be stabilize Pd(0) nanoparticles prevents agglomeration. The magnetic catalyst was effectively used in the Suzuki–Miyaura cross-coupling reaction of substituted phenylboronic acid derivatives with (hetero)aryl bromides in the presence of a K2CO3 at room temperature in aqueous media and magnetic catalyst could be simply extracted from the reaction mixture by an external magnet. Different aryl bromides were converted to coupled-products in excellent yields with spectacular TOFs values (up to 1,960,339?h?1); in the presence of 1?mg of Fe3O4@SBA-15@NHC-Pd catalyst (contains 3.1 × 10–6?mol% Pd) at room temperature in aqueous media. After reusability experiments, it is found that this catalyst was effectively used up to ten times in the reaction with almost consistent catalytic efficiency. A decrease in the activity of the 10th reused catalyst was found as 9%. Graphic Abstract: [Figure not available: see fulltext.]
- ?zdemir, ?smail,Akko?, Mitat,Alt?n, Serdar,Bu?day, Nesrin,Ya?ar, Sedat
-
-
- Magnetite@MCM-41 nanoparticles as support material for Pd-N-heterocyclic carbene complex: A magnetically separable catalyst for Suzuki–Miyaura reaction
-
The Magnetite@MCM-41@NHC@Pd catalyst was obtained with Pd metal bound to the NHC ligand anchored to the surface of Fe3O4@MCM-41. It was characterized by Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy disperse X-ray analysis (EDX), thermogravimetric analysis (TGA), differential thermal analysis (DTA), and scanning electron microscopy (SEM). The amount of Pd in the Magnetite@MCM-41@NHC@Pd was measure by inductively coupled plasma–optical emission spectroscopy (ICP-OES) analysis. The catalytic activity of Magnetite@MCM-41@NHC@Pd heterogeneous catalyst done on Suzuki–Miyaura reactions of aryl halides with different substituted arylboronic acid derivatives. All coupling reactions afforded excellent yields and up to 408404 Turnover Frequency (TOF) h?1 in the presence of 2 mg of Magnetite@MCM-41@NHC@Pd catalyst (0.0564 mmol g?1, 0.01127 mmol% Pd) at room temperature in 2-propanol/H2O (1:2). Moreover, Magnetite@MCM-41@NHC@Pd catalyst was recover by applying the magnet and reused for another reaction. The catalyst showed excellent structural and chemical stability and reused ten times without a substantial loss in its catalytic performance.
- Akko?, Mitat,Bu?day, Nesrin,Alt?n, Serdar,Ya?ar, Sedat
-
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- Compound containing conjugated fused ring aromatic structure, application of compound and organic electroluminescent device
-
The invention relates to the field of organic light-emitting devices, and discloses a compound containing a conjugated fused ring aromatic structure, application of the compound and an organic light-emitting device, and the compound has a structure as shown in a formula (I). When the compound provided by the invention is applied to the organic electroluminescent device, the driving voltage can be reduced, and the luminous efficiency can be improved.
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Paragraph 0139-0141
(2021/07/24)
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- Naphthyl- and Quinoline-Appended o-Carboranyl Luminophores: Intramolecular Charge Transfer-Based Radiative Decay Controlled by Structural Geometry around C?C Bond Axis
-
Naphthyl- and quinoline-appended o-carboranyl compounds, NCB and QCB, respectively, were prepared and characterized by multinuclear nuclear magnetic resonance spectroscopy, elemental analysis, and single crystal X-ray diffraction. Although both the compounds were non-emissive in the solution state at 298 K, they were photoluminescent in the rigid state (in THF at 77 K and film state) in the region 450–550 nm. Theoretical calculation of the optimized structure in the S1 state suggested that the low-energy emissive bands for NCB and QCB were attributed to intramolecular charge transfer (ICT) transition. Intriguingly, the C?C bond axis of the o-carborane in NCB in the solid state was more orthogonal to the plane of the appended aromatic group than that in QCB, indicating relatively high delocalization between the o-carborane and aromatic moieties of NCB. The quantum efficiency and radiative decay constant of the ICT-based emission of NCB in the film state were much higher than those of QCB. These findings imply that the structural geometry around the C?C bond axis of the o-carborane is a decisive factor in accelerating the ICT-based radiative decay in the o-carbonyl luminophores in the rigid state.
- Ryu, Chan Hee,Lee, Seok Ho,Yi, Sanghee,Hong, Ju Hyun,Im, Sehee,Lee, Kang Mun
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p. 4875 - 4881
(2021/11/13)
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- Asymmetric pyrene derivatives comprising aryl amine group and organic light-emitting diode including the same
-
The present invention relates to asymmetric pyrene derivatives represented by chemical formula A or chemical formula B and to an organic light-emitting device including the same, wherein substituents of Ar1, Ar2, Ar3, Ar4, Z and m are as defined in the detailed description of the present invention.
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-
Paragraph 0252; 0380; 0385-0386
(2020/12/18)
-
- Orthogonal Nanoparticle Catalysis with Organogermanes
-
Although nanoparticles are widely used as catalysts, little is known about their potential ability to trigger privileged transformations as compared to homogeneous molecular or bulk heterogeneous catalysts. We herein demonstrate (and rationalize) that nanoparticles display orthogonal reactivity to molecular catalysts in the cross-coupling of aryl halides with aryl germanes. While the aryl germanes are unreactive in LnPd0/LnPdII catalysis and allow selective functionalization of established coupling partners in their presence, they display superior reactivity under Pd nanoparticle conditions, outcompeting established coupling partners (such as ArBPin and ArBMIDA) and allowing air-tolerant, base-free, and orthogonal access to valuable and challenging biaryl motifs. As opposed to the notoriously unstable polyfluoroaryl- and 2-pyridylboronic acids, the corresponding germanes are highly stable and readily coupled. Our mechanistic and computational studies provide unambiguous support of nanoparticle catalysis and suggest that owing to the electron richness of aryl germanes, they preferentially react by electrophilic aromatic substitution, and in turn are preferentially activated by the more electrophilic nanoparticles.
- Fricke, Christoph,Sherborne, Grant J.,Funes-Ardoiz, Ignacio,Senol, Erdem,Guven, Sinem,Schoenebeck, Franziska
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p. 17788 - 17795
(2019/11/13)
-
- Desulfurization of Diaryl(heteroaryl) Sulfoxides with Benzyne
-
Two benzyne-enabled desulfurization reactions have been demonstrated which convert diaryl sulfoxides and heteroaryl sulfoxides to biaryls and desulfurized heteroarenes, respectively. The reaction accessing biaryls tolerates a variety of functional groups, such as halides, pseudohalides, and carbonyls. Mechanistic studies reveal that both reactions proceed via a common assembly process but divergent disassemblies of the generated tetraaryl(heteroaryl) sulfuranes.
- Chen, De-Li,Sun, Yan,Chen, Mengyuan,Li, Xiaojin,Zhang, Lei,Huang, Xin,Bai, Yihui,Luo, Fang,Peng, Bo
-
supporting information
(2019/06/13)
-
- C?I-Selective Cross-Coupling Enabled by a Cationic Palladium Trimer
-
While there is a growing interest in harnessing synergistic effects of more than one metal in catalysis, relatively little is known beyond bimetallic systems. This report describes the straightforward access to an air-stable Pd trimer and presents unambiguous reactivity data of its privileged capability to differentiate C?I over C?Br bonds in C?C bond formations (arylation and alkylation) of polyhalogenated arenes, which typical Pd0 and PdI-PdI catalysts fail to deliver. Experimental and computational reactivity data, including the first location of a transition state for bond activation by the trimer, are presented, supporting direct trimer reactivity to be feasible.
- Diehl, Claudia J.,Scattolin, Thomas,Englert, Ulli,Schoenebeck, Franziska
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supporting information
p. 211 - 215
(2018/12/13)
-
- BLUE FLUORESCENT HOST MATERIALS, AND ORGANIC THIN FILM AND ORGANIC LIGHT EMITTING DEVICES COMPRISING THE SAME
-
The present invention provides an organic compound represented by chemical formula 1, and an organic electroluminescent device comprising the same. The present invention comprises a blue fluorescent host material, thereby providing the organic electroluminescent device having improved driving voltage, light-emitting efficiency, and light-emitting lifespan.COPYRIGHT KIPO 2017
- -
-
-
- [4 + 2] Annulation of Donor-Acceptor Cyclopropanes with Acetylenes Using 1,2-Zwitterionic Reactivity
-
A new process for the [4 + 2] annulation of donor-acceptor cyclopropanes with acetylenes under the effect of anhydrous GaCl3 using 1,2-zwitterion reactivity was elaborated. The reaction opens access to substituted dihydronaphthalenes, naphthalenes, and other fused carbocycles. The direction of the reaction can be efficiently controlled by temperature.
- Novikov, Roman A.,Tarasova, Anna V.,Denisov, Dmitry A.,Borisov, Denis D.,Korolev, Victor A.,Timofeev, Vladimir P.,Tomilov, Yury V.
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p. 2724 - 2738
(2017/03/14)
-
- Rapid threefold cross-couplings with sterically bulky triarylbismuths under Pd-Cu dual catalysis
-
The threefold cross-coupling reactivity of sterically highly demanding bulky triarylbismuths was addressed with task specific Pd-Cu dual catalytic conditions. In this study, an unprecedented hitherto unknown cross-coupling reactivity of sterically bulky triarylbismuths was demonstrated with a diverse range of aryl iodides and bromides. The intermediacy and in situ formation of arylcopper was probed with mesitylcopper in support of the proposed dual catalysis. This study opened up an easy way forward for application of sterically bulky bismuth reagents in threefold aryl-aryl coupling reactions.
- Rao, Maddali L. N.,Dhanorkar, Ritesh J.
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p. 1012 - 1017
(2016/01/16)
-
- Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device
-
A novel organic compound having a high hole-transport property is provided. A long-lifetime light-emitting element is provided. An organic compound represented by General Formula (G0) is provided. In General Formula (G0), Ar1 represents a substituted or unsubstituted naphthyl group, Ar2 represents a substituted or unsubstituted carbazolyl group, Ar3 represents a substituted or unsubstituted fluorenyl group or a substituted or unsubstituted spirofluorenyl group, and α1 and α2 each independently represent a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyldiyl group.
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Page/Page column 65; 66
(2016/09/26)
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- COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
-
Disclosed is a compound, which is represented by chemical formula 1. In addition, disclosed is an organic electronic element, comprising a first electrode, a second electrode, and an organic matter layer between the first electrode and the second electrode, wherein the organic matter layer contains a compound represented by chemical formula 1. When the compound represented by chemical formula 1 is contained in the organic matter layer, the compound is capable of reducing a driving voltage, and improving light emitting efficiency, stability, and durability.(110) Substrate(120) Positive electrode(130) Hole injection layer(140) Hole transport layer(141) Buffer layer(150) Light emitting layer(151) Light-emitting assisting layer(160) Electron transport layer(170) Electron injection layer(180) Negative electrodeCOPYRIGHT KIPO 2016
- -
-
Paragraph 0238-0241
(2016/10/08)
-
- LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
-
A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (G0). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (G0), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.
- -
-
Paragraph 0476-0481
(2016/11/28)
-
- Synthesis of naphthalene derivatives through inexpensive BF 3·Et2O-catalyzed annulation reaction of arylacetaldehydes with arylalkynes
-
An inexpensive BF3·Et2O-catalyzed annulation reaction of arylacetaldehydes with arylalkynes has been developed. Various substituted phenylacetaldehydes and phenylacetylenes can undergo this reaction, producing corresponding α-aryl su
- Xiang, Shikai,Hu, Hao,Ma, Jing,Li, Yuanzhuo,Wang, Biqin,Feng, Chun,Zhao, Keqing,Hu, Ping,Chen, Xiaozhen
-
p. 945 - 951
(2013/08/23)
-
- Base- and metal-free C-H direct arylations of naphthalene and other unbiased arenes with diaryliodonium salts
-
A novel metal-free direct arylation of unbiased arenes with diaryliodonium triflates in a process where the use of solvents and additives is not required has been established.
- Castro, Susana,Fernandez, Juan J.,Vicente, Ruben,Fananas, Francisco J.,Rodriguez, Felix
-
supporting information
p. 9089 - 9091
(2012/11/07)
-
- MATERIAL FOR ORGANIC PHOTOELECTRIC DEVICE INCLUDING ELECTRON TRANSPORTING UNIT AND HOLE TRANSPORTING UNIT, AND ORGANIC PHOTOELECTRIC DEVICE INCLUDING THE SAME
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A material for an organic photoelectric device, the material including a compound including a pyridine ( ) moiety, the compound being a bipolar organic compound including both a hole transporting unit and an electron transporting unit, the compound being represented by the following Formula 1:
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Page/Page column 23-24
(2012/11/13)
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- HALOGENATED DIARYLAMINE COMPOUND AND SYNTHESIS METHOD THEREOF
-
An object is to provide a new halogenated diarylamine compound serving as a source material for synthesis of a variety of diarylamine compounds and triarylamine compounds and a synthesis method of the new halogenated diarylamine compound. A halogenated diarylamine compound represented by the following general formula (G1) and a synthesis method thereof are provided. Note that a variety of diarylamine compounds and triarylamine compounds can be synthesized using the halogenated diarylamine compound represented by the following general formula (G1).
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Page/Page column 28
(2011/04/18)
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- ORGANIC ELECTROLUMINESCENCE DEVICE AND ANTHRACENE DERIVATIVE
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An anthracene derivative having a specific asymmetric structure is provided. The asymmetric anthracenes are useful in an organic electroluminescence device and exhibit efficient light emission and a long performance lifetime.
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Page/Page column 25
(2011/02/26)
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- PHENANTHRENE DERIVATIVE, AND MATERIAL FOR ORGANIC EL ELEMENT
-
A phenanthrene derivative is represented by a formula (1) below. In the formula (1), Ar1 and Ar2 each represent an aromatic hydrocarbon ring group having 6 to 18 carbon atoms for forming the ring. The aromatic hydrocarbon ring group contains none of anthracene skeleton, pyrene skeleton, aceanthrylene skeleton and naphthacene skeleton. R1 represents a substituent, the number of which may be 0, 1 or more. R1 may be bonded in any position of the phenanthrene skeleton. n and m each represent an integer of 1 to 3. k represents an integer of 0 to 8.
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Page/Page column 96
(2011/01/11)
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- Triarylamine Derivative, Light-Emitting Substance, Light-Emitting Element, Light-Emitting Device, and Electronic Device
-
A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; α represents a substituted or unsubstituted naphthyl group; β represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.
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-
-
- Preparation of unsymmetrical biaryls by pd(II)-catalyzed cross-coupling of aryl iodides
-
The Ullmann homo-and cross-couplings of aryl iodides are carried out to afford symmetrical and unsymmetrical biaryls in moderate to good yields in a catalytic system of Pd(OAc)2/K2CO3/MeCOEt. The high selectivity of unsymmetrical biaryl products in cross-couplings mainly depends on the reactivity difference between two iodoarene substrates and their employed ratios.
- Wang, Liqiang,Lu, Wenjun
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supporting information; experimental part
p. 1079 - 1082
(2009/07/25)
-
- CARBAZOLE DERIVATIVE, AND LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC DEVICE USING CARBAZOLE DERIVATIVE
-
To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independenly 0 or 1.
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Page/Page column 268-269
(2009/07/17)
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- TRIARYLAMINE DERIVATIVE, LIGHT-EMITTING SUBSTANCE, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC DEVICE
-
A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; α represents a substituted or unsubstituted naphthyl group; β represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.
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Page/Page column 98-99
(2009/12/23)
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- NAPHTHALENE DERIVATIVE, MATERIAL FOR ORGANIC ELECTROLUMINESCENCE DEVICE, AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
-
A naphthalene derivative represented by the following formula (1) is provided. In the formula, Ar1 to Ar4 each represent an aromatic hydrocarbon cyclic group having 6 to 18 carbon atoms forming a ring. The aromatic hydrocarbon cyclic group has none of anthracene skeleton, pyrene skeleton, aceanthrylene skeleton and naphthacene skeleton. n, m and 1 each represent an integer in a range of 1 to 5. p represents an integer in a range of o to 5. When n, m, 1 and p each are 2 or more, a plurality of Ar1 to Ar4 may be mutually the same or different.
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- ANTHRACENE DERIVATIVES, ORGANIC ELECTRONIC DEVICES USING ANTHRACENE DERIVATIVES, AND ELECTRONIC APPARATUSES COMPRISING ORGANIC ELECTRONIC DEVICE
-
Disclosed is an anthracene derivative, an organic electronic device using the anthracene derivative, and an electronic apparatus including the organic electronic device. The anthracene derivative is capable of being used as a hole injecting material, a hole transporting material, an electron injecting material, an electron transporting material, and a light emitting material in an organic electronic device including an organic light emitting device. In particular, the anthracene derivative is capable of being used alone as a light emitting material and a host or a dopant in a host/dopant system. The organic electronic device is excellent in views of efficiency, driving voltage, life time, and stability.
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Page/Page column 15
(2010/11/30)
-
- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
-
Provided are a novel aromatic amine derivative represented by the following general formula (1) and an organic electroluminescent device including an organic thin film formed of one or a plurality of layers including at least a light emitting layer interposed between a cathode and an anode, in which at least one layer of the organic thin film contains the aromatic amine derivative alone or as a component of a mixture, which contributes to suppressing molecular crystallization and improving yield in the production of an organic electroluminescent device, whereby an organic electroluminescent device having a long lifetime can be obtained, and the aromatic amine derivative is capable of realizing the organic electroluminescent device: where: R1 represents an aryl group or the like; a represents an integer of 0 to 4; b represents an integer of 1 to 3; and at least one of Ar1 to Ar4 represents a group represented by the following general formula (2): where Ar5 represents a fused aromatic ring group and Ar6 represents an aryl group or an aromatic heterocyclic group, where remaining groups of Ar1 to Ar4, none of which is represented by the general formula (2), each independently represent an aryl group or an aromatic heterocyclic group.
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Page/Page column 27
(2009/01/20)
-
- FLUORENE COMPOUND AND ORGANIC ELECTROLUMINESCENCE DEVICE
-
Provided is a novel fluorene compound, which is represented by the following general formula (1):
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Page/Page column 52-53
(2008/06/13)
-
- Method for producing aromatic compound and aromatic compound
-
A process for producing an aromatic compound which can effectively decrease the contents of halogen elements in the aromatic compound and an aromatic compound which is produced in accordance with the process and useful as the material for obtaining an organic electroluminescence device having a long life are provided. The process for producing an aromatic compound comprises bringing an aromatic compound which is produced via an intermediate compound having halogen elements and has contents of halogen elements of 10 to 1,000 ppm by mass into reaction with a dehalogenating agent to decrease the contents of halogen elements to 10 ppm by mass or smaller, and an aromatic compound which is produced in accordance with the process.
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Page/Page column 14
(2008/06/13)
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- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT EMPLOYING THE SAME
-
An aromatic amine derivative having a specific structure having m-terphenyl group and an organic electroluminescence device comprising a cathode, an anode and an organic thin film layer which is disposed between the cathode and the anode and comprises at least one layer comprising at least a light emitting layer, wherein at least one layer in the organic thin film layer comprises the aromatic amine derivative singly or as a component of a mixture. The organic electroluminescence device has a long life.
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Page/Page column 25
(2008/06/13)
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- ASYMMETRIC MONOANTHRACENE DERIVATIVE, MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE UTILIZING THE SAME
-
Provided are an asymmetric monoanthracene derivative having a specific structure, a material for an organic EL device comprising the above asymmetric monoanthracene derivative and an organic EL device in which an organic thin film layer comprising a single layer or plural layers including a luminescent layer is interposed between a cathode and an anode, wherein at least one of the above organic thin film layers contains the asymmetric monoanthracene derivative described above in the form of a single component or a mixed component. Provided are an organic electroluminescent (EL) device having a high luminous efficiency and a long life, an asymmetric monoanthracene derivative which materializes the same and a material for an organic EL device.
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Page/Page column 34
(2008/06/13)
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- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
-
Disclosed is an organic electroluminescent device wherein an organic thin film which is composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. Since at least one layer of the organic thin film contains a novel aromatic amine derivative, which has an asymmetric structure wherein two different amine units are bonded through a linking group, by itself or as a component of a mixture, molecules are hardly crystallized, thereby improving the production yield of the organic electroluminescent device. This organic electroluminescent device has a long life.
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Page/Page column 67
(2008/06/13)
-
- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
-
Disclosed is a novel aromatic amine derivative having an asymmetric structure. Also disclosed is an organic electroluminescent device wherein an organic thin film composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. Since at least one layer of the organic thin film contains the aromatic amine derivative by itself or as a component of a mixture, molecules are hardly crystallized, thereby improving the production yield of the organic electroluminescent device. This organic electroluminescent device has a long life.
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Page/Page column 64
(2008/06/13)
-
- A new titanium tetrachloride mediated annulation of α -aryl-substituted carbonyl compounds with alkynes: A simple and highly efficient method for the regioselective synthesis of polysubstituted naphthalene derivatives
-
A new straightforward procedure has been developed for the synthesis of polysubstituted naphthalene derivatives. The reaction of α -aryl-substituted carbonyl compounds with terminal or internal alkynes in the presence of TiCl4 regioselectively generates substituted naphthalene derivatives in good to excellent yields.
- Kabalka, George W.,Ju, Yuhong,Wu, Zhongzhi
-
p. 7915 - 7917
(2007/10/03)
-
- A highly regioselective synthesis of polysubstituted naphthalene derivatives through gallium trichloride catalyzed alkyne-aldehyde coupling
-
A convenient synthesis of polysubstituted naphthalenes 3 involves the gallium trichloride catalyzed coupling of aromatic alkynes 1 and phenyl acetaldehydes or ketones 2 in dichloromethane. The reaction is highly regioselective.
- Viswanathan, Ganapathy S.,Wang, Mingwen,Li, Chao-Jun
-
p. 2138 - 2141
(2007/10/03)
-