- Tertiary amine derivatives and organic electroluminescent device including the same
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A UV-region high-energy external light source is effectively absorbed to minimize damage to organic materials in the organic electroluminescent device. 1 Is a cross-sectional view of an organic electroluminescence device according to the present invention. O-2 electrode 1 Or more organic material layers disposed between the (2) and (1) th electrodes. A capping layer is included. The organic material layer and/or the capping layer may include the 1 st amine derivative represented by Formula 3. Chemical Formula 1. Wherein each substituent in Formula 1 is as defined in the description of the invention.
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Paragraph 0144-0147
(2021/06/01)
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- Aryl amine derivatieves and organic electroluminescent device including the same
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Provided is an arylamine derivative that effectively absorbs a high-energy external light source in a UV region and minimizes damage to organic matter inside an organic electroluminescent device, thereby contributing to a substantial improvement in the lifespan of the organic electroluminescent device. An organic electroluminescent device according to the present invention comprises a first electrode, a second electrode, and one or more organic material layers provided between the first electrode and the second electrode. The organic material layer contains an arylamine derivative representedby chemical formula 1. In the chemical formula 1, the definition of each substituent is the same as the definition in the specific embodiment of the invention.
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Paragraph 0131-0133
(2019/08/12)
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- Enantioselective Strecker and Allylation Reactions with Aldimines Catalyzed by Chiral Oxazaborolidinium Ions
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Chiral oxazaborolidinium ion (COBI)-catalyzed enantioselective nucleophilic addition reactions of aldimines using tributyltin cyanide and allyltributylstannane have been developed. Various α-aminonitriles and homoallylic amines were synthesized in high yi
- Kang, Ki-Tae,Park, Sang Hyun,Ryu, Do Hyun
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supporting information
p. 6679 - 6683
(2019/09/12)
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- Tribenzazole amine derivatives and organic electroluminescent device including the same
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The present invention provides a tribenzazole amine derivative which contributes to substantial life improvement of an organic electroluminescent device by effectively absorbing a high energy external light source of an UV area and minimizing the damage of organic materials in the organic electroluminescent device. The organic electroluminescent device according to the present invention includes: a first electrode; a second electrode; an organic material layer disposed between the first electrode and the second electrode; and a capping layer disposed on the second electrode. The capping layer includes a tribenzazole amine derivative represented by chemical formula 1. In chemical formula 1, R^1, R^2 and R^3 are the same as or different from each other and are respectively and independently hydrogen and an alkyl group having 1 to 10 carbon atoms. l, n, and m are integers of 0 to 4.COPYRIGHT KIPO 2020
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Paragraph 0136-0139
(2020/01/31)
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- Tertiary amine derivatives and organic electroluminescent device including the same
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Provided is a tertiary amine derivative which contributes to a substantial increase in service life of an organic electroluminescent device by minimizing damages to organic matter inside the organic electroluminescent device via effective absorption of a high-energy external light source in the UV region. According to the present invention, the organic electroluminescent device comprises: a first electrode and a second electrode; and one or more organic material layers disposed between the first electrode and the second electrode, wherein the organic material layers comprise a tertiary amine derivative represented by chemical formula 1. In the chemical formula 1, Z_1, Z_2, and Z_3 are each independently O or S.COPYRIGHT KIPO 2020
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Paragraph 0178-0181
(2020/02/01)
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- Oxidative NHC Catalysis for the Generation of Imidoyl Azoliums: Synthesis of Benzoxazoles
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N-Heterocyclic carbene (NHC)-catalyzed intramolecular cyclization of aldimines generated from 2-amino phenols and aromatic aldehydes leading to the synthesis of 2-arylbenzoxazoles under mild conditions is presented. The reaction proceeds via the generation of the aza-Breslow intermediates from imines and NHC, which under oxidative conditions form the key imidoyl azoliums and a subsequent intramolecular cyclization furnishes the product. The reaction tolerates a broad range of functional groups, and the products are formed in generally good yields.
- Patra, Atanu,James, Anjima,Das, Tamal Kanti,Biju, Akkattu T.
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p. 14820 - 14826
(2019/01/03)
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- pyrimidine derivatives substituted with aryl- or heteroaryl- substituted fluorene group, and organic electroluminescent device including the same
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Aryl group or a heteroaryl group substituted pyrimidine derivatives of formula 1 is coupled to polyarylenic backbone containing encoded ball number. [Formula 1] [In said formula 1, Ar1 And Ar2 Are each independently a hydrogen, methyl or phenyl, The C L6 - C24 C aryl of reflector3 - C24 It will be biting and heteroatoms, N is an integer 0 or 1 and, Ar3 The C6 - C30 C aryl of reflector3 - C30 A variety of printers] (by machine translation)
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Paragraph 0151; 0152; 0153; 0154
(2017/10/28)
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- Fused phenanthridine derivatives substituted with aryl or heteroaryl, and organic electroluminescent device including the same
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Aryl group or a heteroaryl group substituted [...] phenanthridine derivatives of formula 1 to ball number encoded. [Formula 1] [In said formula 1, Ar1 Is phenyl or pyridyl [...], Z1 And the O or S, L is a phenyl or pyridyl [...], Ar2 To is selected from the group represented by either formula 3] [Formula 3] , , , , (by machine translation)
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Paragraph 0361-0364
(2018/03/28)
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- Catalyst-free allylation of 2-aminophenol–derived aldimines with allyltrichlorosilane under thermal conditions
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Allylation of 2-aminophenol-derived aldimines using allyltrichlorosilane under catalyst free conditions has been developed. This reaction afforded the corresponding homoallylic amines in good to excellent yields (68–94%). The salicylaldehyde-derived aldimines as well as benzoylhydrazone also found to react with allyltrichlorosilane smoothly under the same conditions, to furnish the corresponding homoallylic amine derivatives. This study suggests that the phenolic –OH group acts as an anchoring group for the transfer of allyl group from allyl silane reagent.
- Venkatanna, Kesa,Ramanathan, Chinnasamy Ramaraj
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supporting information
p. 3650 - 3653
(2017/08/22)
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- Abnormal effect of hydroxyl on the longest wavelength maximum in ultraviolet absorption spectra for bis-aryl Schiff bases
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Two sets of bis-aryl Schiff bases that contain 4(or 4′)-OH and 2(or 2′)-OH were synthesized. The first set consists of 4-HOArCH=NArY and XArCH=NArOH-4′, and the second set consists of 2-HOArCH=NArY and XArCH=NArOH-2′. Their ultraviolet absorption spectra were measured and investigated. A very interesting phenomenon was observed by analyzing their wave number νmax (cm?1) of longest wavelength maximum λmax (nm) of ultraviolet. Compared with the change regularity of the νmax of XArCH=NArY (where the X and Y excluded OH), the 4′-position hydroxyl (4′-OH) and 2′-position hydroxyl (2′-OH) have abnormal performance. The details are the following: the 4′-OH contributes an additional red shift to the νmax of XArCH=NArOH-4′ (λmax increase), whereas the 2′-OH contributes an additional blue shift to the νmax of XArCH=NArOH-2′ (λmax decrease). In addition, there are ortho steric effects of all 2-OH and 2′-OH on the νmax for 2-HOArCH=NArY and XArCH=NArOH-2′, and the ortho steric effect contributes a red shift to their νmax. These experimental facts can provide an important theoretical reference for us using aryl Schiff base compounds as optical materials and performing the molecular design.
- Cao, Chao-Tun,Zhou, Wei,Cao, Chenzhong
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- OMS-2/H2O2/Dimethyl Carbonate: An Environmentally-Friendly Heterogeneous Catalytic System for the Oxidative Synthesis of Benzoxazoles at Room Temperature
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A manganese octahedral molecular sieve (OMS-2) was found to be an efficient and recyclable heterogeneous catalyst for the oxidative synthesis of benzoxazoles in the gram-scale from phenolic imines at room temperature. H2O2 and biobased reagent dimethyl carbonate (DMC) were successfully employed as the environmentally friendly oxidant and solvent, respectively, in an OMS-2-catalysted redox reaction for the first time. Benzoxazoles could also be obtained from N-substituted 2-aminophenols via Cu(OH)x/OMS-2-catalyzed sequential oxidative transformation at elevated temperatures.
- Meng, Xu,Wang, Yuanguang,Chen, Baohua,Chen, Gexin,Jing, Zhenqiang,Zhao, Peiqing
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supporting information
p. 2018 - 2024
(2017/12/26)
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- Efficient indirect electrochemical synthesis of 2-substituted benzoxazoles using sodium iodide as mediator
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An electrochemical strategy for the effi-cient synthesis of 2-substituted benzoxazoles was de-veloped using a catalytic amount of sodium iodide (Nal) as a redox catalyst in a two-phase buffer system.
- Li, Wei-Cui,Zeng, Cheng-Chu,Hu, Li-Ming,Tian, Hong-Yu,Little, R. Daniel
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p. 2884 - 2890
(2014/03/21)
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- An efficient synthesis of 2-substituted benzoxazoles using cerium(III) chloride/sodium iodide as catalyst
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An efficient and environmentally benign method for the synthesis of 2-substituted benzoxazoles is reported. The condensation of 2-aminophenol with an aldehyde gave an imine intermediate, which was cyclized and dehydrogenated to 2-substituted benzoxazole with good yield in the presence of CeCl 3 /NaI as catalyst. The one-pot synthesis was carried out in toluene at 100 ° C using O 2 as the oxidant.
- Zhu, Xun,Wei, Yunyang
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p. 211 - 214
(2013/01/16)
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- Reagents for introducing a fluorescent deoxyuridine 2-phenylbenzoxazole derivative into oligonucleotides
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Using the Heck-Sonogashira reaction, a new fluorescent nucleoside, 5-[4-(2-benzoxazolyl)phenyl]ethynyl-2′-deoxyuridine, was synthesized and converted into oligonucleotide-labeling reagents, namely, 3′-phosphoramidite and a functionalized solid support.
- Malakhova,Malakhov,Kuznitsova,Varnavskii,Kadutskii,Kozhich,Korshun,Berlin
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p. 611 - 617
(2007/10/03)
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