- Aromatic amine derivative organic electroluminescent material and device thereof
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The invention discloses an aromatic amine derivative organic electroluminescent material and a device thereof. The compound is an aromatic amine substituted pyrene compound, and a longer arylene group or heteroarylene group and other structures are introduced among one arylamine and pyrene to prolong the molecular length of the luminescent material. The compound can be used as a luminescent material in an organic electroluminescent device. These novel compounds provide better device performance, such as light emission efficiency and external quantum efficiency. An electroluminescent device and a compound formulation are also disclosed.
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Paragraph 0143-0146
(2021/09/29)
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- Anchored PdCl2 on fish scale: an efficient and recyclable catalyst for Suzuki coupling reaction in aqueous media
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PdCl2 anchored on fish scale (FS) complex were intended to a heterogeneous catalyst for ligand-free Suzuki coupling reaction in aqueous media. The catalyst FS-PdCl2 was characterized by FT-IR, powder XRD, XPS and SEM. FS-PdCl2 complex has been successfully implemented for Suzuki coupling reactions of various halogenated aromatics with arylboronic acid to provide the corresponding biaryl compounds under environmentally friendly conditions (40 °C, water solvent). Moreover, the efficient catalyst shows excellent stability and recyclability, and its catalytic activity without any decrease after 8 times consecutive reused.
- Yang, Quanlu,Yang, Fawang,Zhang, Ying,Hou, Juanjuan,Li, Jiankun,Cheng, Jinkui,Wu, Shang,Zhan, Huiying,Zhang, Xinghui,Shi, Haixiong
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supporting information
(2020/12/25)
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- Highly efficient palladium-catalyzed cross-coupling of diarylborinic acids with arenediazoniums for practical diaryl synthesis
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A highly efficient cross-coupling of cost-effective diarylborinic acids with both isolatable and latent arenediazoniums, i.e. tetrafluoroborates and aryltriazenes, respectively, has been developed with a practical palladium catalyst system under base-free conditions in open flask at room temperature. A variety of electronically and sterically various biaryls, in particular, those bearing a coordinative ortho-substituent, could be obtained in good to excellent yields by using 0.3 mol% palladium acetate as catalyst. Features of the protocol including cost-effectiveness of diarylborinic acids, efficacy to heteroatom ortho-substituted substrates and high chemoselectivity to aryl chlorides have been clearly demonstrated in practical synthesis of fungicide Boscalid.
- Wang, Fengze,Wang, Chen,Sun, Guoping,Zou, Gang
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supporting information
(2019/12/25)
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- Immobilized Pd on Eggshell Membrane: A powerful and recyclable catalyst for Suzuki and Heck cross-coupling reactions in water
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A stable heterogeneous palladium catalysts, the waste eggshell membrane (ESM) anchored Pd complex, was synthesized by a simple and green technique. The catalyst obtained can display an outstanding catalytic activity for Suzuki and Heck coupling reactions in water media. The reactions of various aryl halides with aryl boronic acids and terminal alkenes provided the corresponding products in moderate to excellent yields. More importantly, this novel and efficient catalyst with high stability can be easily reused for at least twelve times with no decrease of the catalytic activity, performing an endurable and wide tolerance of the substrates. Facile synthesis, high catalytic activity, and recyclability make these catalysts interesting for further studies.
- Wu, Shang,Jiang, Hongyan,Zhang, Hong,Zhao, Lianbiao,Yuan, Peilin,Zhang, Ying,Su, Qiong,Wang, Yanbin,Wu, Lan,Yang, Quanlu
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- Arylation of aryllithiums with: S-arylphenothiazinium ions for biaryl synthesis
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Aryllithiums are one of the most common and important aryl nucleophiles; nevertheless, methods for arylation of aryllithums to produce biaryls have been limited. Herein, we report arylation of aryllithiums with S-arylphenothiazinium ions through selective
- Morofuji, Tatsuya,Yoshida, Tatsuki,Tsutsumi, Ryosuke,Yamanaka, Masahiro,Kano, Naokazu
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p. 13995 - 13998
(2020/11/21)
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- Visible-Light-Promoted, Catalyst-Free Gomberg-Bachmann Reaction: Synthesis of Biaryls
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Biaryls were synthesized via a novel visible-light-promoted Gomberg-Bachmann reaction that does not require a photosensitizer or any metal reagents. The formation of an electron donor-acceptor complex between aryl diazonium salts and pyridine allows, under visible-light irradiation, the synthesis of biaryls in moderate-to-high yields.
- Lee, Juyoung,Hong, Boseok,Lee, Anna
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p. 9297 - 9306
(2019/08/12)
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- Synthesis, characterization and catalytic performance of palladium supported on pyridine-based covalent organic polymer for Suzuki-Miyaura reaction
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A bipyridine-based covalent organic polymer (COP) was successfully synthesized by condensation of trimesoyl chloride (TMC) and 2,2′-bipyridine-5,5′-diamine (Bpy) under ambient conditions. This material was modified by coordination of PdCl2 to COP framework, affording a hybrid material, Pd@TMC-Bpy COP, which was applied as a highly efficient heterogeneous catalyst for Suzuki-Miyaura reaction under ligand-free conditions in ethyl lactate. The catalyst could be reused for five times without obvious loss of its activity.
- Han, Yi,Di, Jia-Qi,Zhao, Ai-Dong,Zhang, Zhan-Hui
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- Desulfurization of Diaryl(heteroaryl) Sulfoxides with Benzyne
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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
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supporting information
(2019/06/13)
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- Gold catalysed Suzuki-Miyaura coupling of arenediazonium o-benzenedisulfonimides
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Arenediazonium o-benzenedisulfonimides have been used as efficient electrophilic partners in Au(I) catalysed Suzuki coupling reactions. The synthetic protocol is general, easy and produced either biaryls or heteroaryl arenes in good yields (51 positive examples, average yield 80%). o-Benzenedisulfonimide was recovered at the end of the reactions and was reused to prepare the starting salts for further reactions. Mechanistic insights suggest that the o-benzenedisulfonimide anion act as an electron transfer agent and promotes a catalytic cycle which does not require the presence of photocatalysts or external oxidants.
- Barbero, Margherita,Dughera, Stefano
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p. 5758 - 5769
(2018/09/10)
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- Carboncarbon bond forming reactions: Application of covalently anchored 2,4,6-triallyloxy-1,3,5-triazine (TAT) Pd(II) complex over modified surface of SBA-15 to Heck, Suzuki, Sonogashira and Hiyama cross coupling reactions
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A highly active SBA-15-TAT-Pd(II) catalyst was synthesized from organofunctionalized SBA-15 and 2,4,6-triallyloxy-1,3,5-triazine. The catalyst was employed in carrying out Heck, "copper-free" Sonogashira, Suzuki and Hiyama cross coupling reactions. Under the optimized conditions the catalyst displays excellent catalytic activity in delivering the desired products in good to excellent yields. The catalytic system exhibited superior activity regarding the time taken for the completion of reaction, isolation, Pd loading (0.62 mmol%) and yields of products as compared to the earlier reported heterogeneous SBA-15 anchored Pd catalysts. The catalyst could be recycled and reused for five times without any appreciable loss of catalytic activity.
- Singh, Chandani,Jawade, Kiran,Sharma, Priti,Singh, Anand P.,Kumar, Pradeep
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- C-Aryl glucoside SGLT2 inhibitors containing a biphenyl motif as potential anti-diabetic agents
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A series of highly active C-aryl glucoside SGLT2 inhibitors containing a biphenyl motif were designed and synthesized for biological evaluation. Among the compounds tested, compound 16l demonstrated high inhibitory activity against SGLT2 (IC50 = 1.9 nM) with an excellent pharmacokinetic profile. Further study indicated that the in vivo efficacy of compound 16l was comparable to that of dapagliflozin, suggesting that further development would be worthwhile.
- Ding, Yuyang,Mao, Liufeng,Xu, Dengfeng,Xie, Hui,Yang, Ling,Xu, Hongjiang,Geng, Wenjun,Gao, Yong,Xia, Chunguang,Zhang, Xiquan,Meng, Qingyi,Wu, Donghai,Zhao, Junling,Hu, Wenhui
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supporting information
p. 2744 - 2748
(2015/06/08)
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- Suzuki-Miyaura cross-coupling of arenediazonium salts catalyzed by alginate/gellan-stabilized palladium nanoparticles under aerobic conditions in water
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The use of palladium nanoparticles stabilized by natural beads made of an alginate/gellan mixture in the Suzuki-Miyaura cross-coupling reaction of arenediazonium tetrafluoroborates with potassium aryltrifluoroborates (1:1 molar ratio) with loading as low as 0.01-0.002 mol% under aerobic, phosphine-, and base-free conditions in water is described. The catalyst system can be reused several times without significant loss of activity.
- Cacchi, Sandro,Caponetti, Eugenio,Casadei, Maria Antonietta,Di Giulio, Andrea,Fabrizi, Giancarlo,Forte, Giovanni,Goggiamani, Antonella,Moreno, Sandra,Paolicelli, Patrizia,Petrucci, Francesco,Prastaro, Alessandro,Saladino, Maria Luisa
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supporting information; experimental part
p. 317 - 320
(2012/03/26)
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- NOVEL ORGANIC ELECTROLUMINESCENT MATERIAL, ORGANIC ELECTROLUMINESCENT ELEMENT EMPLOYING THE SAME, AND THIN-FILM-FORMING SOLUTION FOR ORGANIC ELECTROLUMINESCENCE
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An aromatic amine compound having a specific structure; and an organic electroluminescent element which comprises a pair of electrodes which are a cathode and an anode and one or more organic thin film layers sandwiched between the electrodes, wherein at least one of the organic thin film layers contains the aromatic amine compound. In particular, the organic electroluminescent element, which employs the organic thin film layers, emits light of any of various hues and has high heat resistance, long life, high luminance, and a high luminescent efficiency. The aromatic amine compound, which is used for realizing the element, is a novel compound having high solubility and capable of film formation in a wet process.
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Page/Page column 44; 54
(2008/06/13)
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- Reactions of dry arenediazonium o-benzenedisulfonimides with triorganoindium compounds
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The reaction between various arenediazonium o-benzenedisulfonimides and triorganoindium compounds is described. Depending on the reaction conditions, it is possible to obtain biaryls (16 examples, average yield of 79%) or diaryldiazenes (18 examples, average yield of 81 %). o-Benzenedisulfonimide can be recovered and reused to prepare additional arenediazonium o-benzenedisulfonimides. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
- Barbero, Margherita,Cadamuro, Silvano,Dughera, Stefano,Giaveno, Cinzia
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p. 4884 - 4890
(2007/10/03)
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- INHIBITION OF MATRIX METALLOPROTEASES BY SUBSTITUTED BIARYL OXOBUTYRIC ACIDS
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Matrix metalloprotease inhibiting compounds, pharmaceutical compositions thereof and a method of disease treatment using such compounds are presented. The compounds of the invention have generalized formula (1) wherein r is 0-2, T is selected from (a) and (b) and R is a mono- or bi-heterocyclic structure. These compounds are useful for inhibiting matrix metalloproteases and, therefore, combating conditions to which MMP's contribute, such as osteoarthritis, rheumatoid arthritis, septic arthritis, periodontal disease, corneal ulceration, proteinuria, aneurysmal aortic disease, dystrophobic epidermolysis, bullosa, conditions leading to inflammatory responses, osteopenias mediated by MMP activity, tempero mandibular joint disease, demyelating diseases of the nervous system, tumor metastasis of degenerative cartilage loss following traumatic joint injury, and coronary thrombosis from athrosclerotic plaque rupture. The present invention also provides pharmaceutical compositions and methods for treating such conditions.
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- METALLOPROTEINASE INHIBITORS
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Compound of formula (I) STR1 wherein Ar represents an optionally substituted phenyl or heteroaryl group, m is 1 or 2, n is 0, 1, 2, 3 or 4, X represents--COOH or--CONHOH and R 1, R 3 and Y are as defined in the specification,are inhibitors of metalloproteinases involved in tissue degradation.
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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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- Aryl radicals from hexazadienes and tetrazenes
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Aryl radicals are produced from both ends of the hexazadienes 1 and 2 and from the tetrazene 3, either thermally or photolytically.They attack aromatic compounds in the nucleus, the yield of biaryl being in the range 40-70percent, though it can be made nearly quantitative by using m-dinitrobenzene as additive.The aryl radicals also oxidize 2-propanol to acetone, the reaction products being the halogenobenzene and 1,2-diacetylhydrazine.Photolysis of 1 goes mainly by way of the tetrazene 3, and this may also be a significant pathway in the thermal reaction.Azodiacetylis an intermediate in the thermal reaction of 1 with 2-propanol and may be generally so in all its reactions.Radical induced decomposition is believed to be important in the reactions of 1, 2, and 3, and it is probably responsible for the formation of 1-acetyl-1-arylhydrazines, routinely produced in yields up to 25percent.
- Mackay, Donald,McIntyre, Deane Douglas
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p. 990 - 999
(2007/10/02)
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