- A one-pot synthesis of thiophene and pyrrole derivatives from readily accessible 3,5-dihydro-1,2-dioxines
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A one-pot synthesis of 2,5-disubstituted thiophene, 1,2,5-tri- and 2,5-disubstituted pyrrole derivatives from readily available 3,5-dihydro-1,2-dioxines is described. The reaction proceeds by an initial Kornblum-de la Mare rearrangement of the 3,5-dihydro-1,2-dioxine to its isomeric 1,4-diketone followed by condensation of the in situ 1,4-diketone with sulfur, ammonia or a primary amine.
- Hewton, Cassie E,Kimber, Marc C,Taylor, Dennis K
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- Organic electroluminescent compound, organic electroluminescence device and application thereof
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The invention provides an organic electroluminescent compound, an organic electroluminescence device and application thereof. The structure of the organic electroluminescent compound is described in the description, wherein R1 and R4 are respectively independent hydrogen, heavy hydrogen, linear or branched chain alkyls of C1-C20, and or one of phenyl, anilino, diphenylamino, 2-phenyl-3-amino-pyridyl, 3-amino-dipyridyl, 2-phenyl-1-naphthylamine, 2-amino-dinaphthyl, 2-phenyl-1-amino-phenanthryl, 3-amino-diphenanthryl, 2-phenyl-1-amino-anthranyl, 2-amino-dianthranyl, phenanthridinyl, biphenyl, pyridyl, pyrimidinyl or triazinyl; R2 and R3 are respectively independent hydrogen, heavy hydrogen, linear or branched chain alkyls of C1-C20, or phenyl, pyridyl, naphthyl, phenanthryl, anthryl, phenanthridine, biphenyl, pyridyl, pyrimidinyl and triazinyl; l, m, n and o are integers of 0-4.
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Paragraph 0082; 0091-0094; 0178
(2018/06/26)
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- Novel organic electroluminescent compound and organic electroluminescent device containing novel organic electroluminescent compound
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The invention provides a novel organic electroluminescent compound and an organic electroluminescent device containing the novel organic electroluminescent compound. The structure of the organic electroluminescent compound provided by the invention is as shown in the specification. The organic electroluminescent compound can serve as multiple kinds of materials such as a blue doped material, a host material, a hole-transport material and an electronic barrier material to be used in the organic electroluminescent device, and also to achieve the effects of reducing driving voltage, improving theluminous efficiency, brightness, thermal stability and color purity of the device and prolonging the device lifetime. Meanwhile, the organic electroluminescent device containing the organic electroluminescent compound provided by the invention has excellent properties of high efficiency and long lifetime.
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Paragraph 0111; 0137-0140
(2018/06/26)
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- NEW NITROGEN-CONTAINING HETEROCYCLIC COMPOUNDS AND ORGANIC ELECTRONIC DEVICE USING THE SAME
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The present invention refers to novel nitrogenous heterocyclic and optical material using it organic electronic device with high. The present invention according to organic electronic devices efficiency, excellent characteristics such as voltage and life blades, presenting a. (by machine translation)
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Paragraph 0254-0257
(2016/10/07)
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- NOVEL NITROGEN-CONTAINING HETEROCYCLIC COMPOUND AND ORGANIC ELECTRONIC DEVICE USING THE SAME
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The present invention provides a novel nitrogen-containing heterocyclic derivative and an organic electronic device using the same. The organic electronic device according to the present invention has excellent properties in terms of efficiency, driving voltage, and a life span.
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Page/Page column 70
(2011/05/05)
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- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT
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Provided are a long-lifetime organic electroluminescence device which can be fabricated in an improved yield owing to suppressed crystallization of molecules, and an aromatic amine derivative that realizes the device, i.e. , a novel aromatic amine derivative having a specific structure. Specifically provided are an organic electroluminescence device, including an organic thin film layer formed of one or more layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode, and an aromatic amine derivative for at least one layer of the organic thin film layer, in particular, a hole transporting layer, the derivative having at least one such structure that a substituent in which two or more specific heterocycles are linked to each other, in particular, a substituent in which two or more specific heterocycles are linked through an aryl group is bonded to an amine through an aryl group.
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Page/Page column 28; 38
(2012/01/11)
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- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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Provided are an organic electroluminescent device including an aromatic amine derivative formed of a specific structure having a thiophene structure and an organic thin film layer interposed between a cathode and an anode and formed of one layer or a plurality of layers including at least a light emitting layer, in which at least one layer of the organic thin film contains the aromatic amine derivative alone or as a component of a mixture, the organic electroluminescent device in which molecules hardly crystallize, and which decreases a driving voltage, can be produced with improved yields upon the production of the organic electroluminescent device, and has a long lifetime, and an aromatic amine derivative realizing the organic electroluminescent device.
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Page/Page column 46-47
(2010/05/13)
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- NEW DIAMINE DERIVATIVES AND ORGANIC ELECTRONIC DEVICE USING THE SAME
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The present invention relates to a new diamine derivative, and an organic electronic device using the same. The diamine derivative according to the present invention can serve as a hole injecting, hole transporting, electron injecting, electron transporting, or light emitting material in an organic electronic device including an organic light emitting device. Particularly, it can serve as a light emitting dopant as used alone, in particular, a blue light emitting dopant. The organic electronic device according to the present invention exhibits excellent characteristics in terms of efficiency, drive voltage, life time, and stability.
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Page/Page column 52
(2008/12/08)
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- AROMATIC AMINE DERIVATIVES AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
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The present invention provides a novel aromatic amine derivative having a specific structure and an organic electroluminescence device in which an organic thin film layer comprising a single layer or plural layers including at least a light emitting layer is interposed between a cathode and an anode, wherein at least one layer in the above organic thin film layer, particularly a hole injecting layer contains the aromatic amine derivative described above in the form of a single component or a mixed component. Use of the aromatic amine derivative described above materialize an organic electroluminescence device which reduces an operating voltage and makes molecules less liable to be crystallized and which enhances a yield in producing the organic EL device and has a long lifetime.
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Page/Page column 51
(2008/12/04)
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- General facile synthesis of 2,5-diarylheteropentalenes
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Palladium-catalyzed cross-coupling reactions of various heteropentalene derivatives were systematically studied. A general three-step synthesis of 2,5-diarylheteropentalenes involving two Suzuki or Negishi couplings and a regiospecific bromination was developed. Nonsymmetrical 2,5-diaryl-furans, thiophenes, pyrroles, 1,3-thiazoles, 1,3-oxazoles, 1,3,4-thiadiazoles, and 1,3,4-oxadiazoles were prepared in 31-67% isolated yield (three steps).
- Vachal, Petr,Toth, Leslie M.
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p. 7157 - 7161
(2007/10/03)
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- New Thiophene Derivatives as Potential Materials for Non Linear Optics
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A method of synthesis of unsymmetrical 2,5-diarylthiophenes is described using β-chloroacroleins, prepared from acetophenones, and their condensation with sodium sulfide and various benzyl bromides.
- Kirsch, Gilbert,Prim, Damien,Leising, Frederic,Mignani, Gerard
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p. 1005 - 1010
(2007/10/02)
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