- Long-lived emission beyond 1000 nm: control of excited-state dynamics in a dinuclear Tb(iii)-Nd(iii) complex
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A long-lived near-infrared Nd(iii) emission is demonstrated using a Tb(iii) donor. The observed emission lifetime of 290 μs at 1057 nm for a Tb(iii)-Nd(iii) dinuclear complex is attributed to the long-lived Tb(iii) donor and the appropriate spacing between the lanthanide ions. This design strategy leads to novel lanthanide photophysics.
- Fushimi, Koji,Hasegawa, Yasuchika,Kitagawa, Yuichi,Matsuda, Kenji,da Rosa, Pedro Paulo Ferreira
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supporting information
p. 8047 - 8050
(2021/08/20)
-
- Compound for organic luminescence, and application thereof
-
The invention relates to a compound for organic luminescence, wherein the structure of the compound is shown as a formula (I), R1-R3 are independently selected from hydrogen, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group and a substituted or unsubstituted alkyl group respectively, L is selected from substituted or unsubstituted phenyl and substituted orunsubstituted heteroaryl, and Ar1 and Ar2 are respectively and independently selected from substituted or unsubstituted phenyl, naphthyl and anthryl. The compound for organic luminescence can be usedas an electron transport material, and has high stability, high charge transfer capability and high glass transition temperature.
- -
-
Paragraph 0026; 0030-0031
(2021/03/31)
-
- Organic monomolecular compound, organic light emitting device or energy conversion device comprising the same
-
An organic single molecule compound comprising a quinoxaline compound and a phosphine oxide-based compound. The present invention relates to an organic light emitting device or an energy conversion device, and an organic single molecule compound of the present invention is represented by chemical formula 1 -1 or Formula 2 -1. Chemical Formula 1 -1. Chemical Formula 2 -1.
- -
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Paragraph 0087-0091
(2021/10/05)
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- Asymmetrically substituted anthryl derivative as well as preparation and application thereof
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The invention belongs to the technical field of organic electron transport materials, and discloses an asymmetrically substituted anthryl derivative as well as preparation and application thereof. Theasymmetrically substituted anthryl derivative is one of the following compounds (as shown in the specification). The invention also discloses a preparation method of the asymmetrically substituted anthryl derivative. An organic electron transport material comprises more than one of the asymmetric substituted anthryl derivatives. An n-type doped electron transport layer is obtained by carrying outn-type doping on the organic electron transport material. The organic electron transport material has the advantages of good solubility, high thermal decomposition temperature, high glass transitiontemperature and the like, and the electron transport layer formed through n-type doping is applied to electroluminescent devices, especially red phosphorescent devices, and has high stability.
- -
-
Paragraph 0060; 0064-0066
(2020/06/16)
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- Cylindrical micelles by the self-assembly of crystalline-b-coil polyphosphazene-b-P2VP block copolymers. Stabilization of gold nanoparticles
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During the last number of years a variety of crystallization-driven self-assembly (CDSA) processes based on semicrystalline block copolymers have been developed to prepare a number of different nanomorphologies in solution (micelles). We herein present a convenient synthetic methodology combining: (i) The anionic polymerization of 2-vinylpyridine initiated by organolithium functionalized phosphane initiators; (ii) the cationic polymerization of iminophosphoranes initiated by -PR2Cl2; and (iii) a macromolecular nucleophilic substitution step, to prepare the novel block copolymers poly(bistrifluoroethoxy phosphazene)-b-poly(2-vinylpyridine) (PTFEP-b-P2VP), having semicrystalline PTFEP core forming blocks. The self-assembly of these materials in mixtures of THF (tetrahydrofuran) and 2-propanol (selective solvent to P2VP), lead to a variety of cylindrical micelles of different lengths depending on the amount of 2-propanol added. We demonstrated that the crystallization of the PTFEP at the core of the micelles is the main factor controlling the self-assembly processes. The presence of pyridinyl moieties at the corona of the micelles was exploited to stabilize gold nanoparticles (AuNPs).
- Cortes, Maria De Los Angeles,De La Campa, Raquel,Valenzuela, Maria Luisa,Díaz, Carlos,Carriedo, Gabino A.,Soto, Alejandro Presa
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-
- Electrophilic Phosphonium Cation-Mediated Phosphane Oxide Reduction Using Oxalyl Chloride and Hydrogen
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The metal-free reduction of phosphane oxides with molecular hydrogen (H2) using oxalyl chloride as activating agent was achieved. Quantum-mechanical investigations support the heterolytic splitting of H2 by the in situ formed electrophilic phosphonium cation (EPC) and phosphane oxide and subsequent barrierless conversion to the phosphane and HCl. The reaction can also be catalyzed by the frustrated Lewis pair (FLP) consisting of B(2,6-F2C6H3)3 and 2,6-lutidine or phosphane oxide as Lewis base. This novel reduction was demonstrated for triaryl and diaryl phosphane oxides providing access to phosphanes in good to excellent yields (51–93 %).
- Stepen, Arne J.,Bursch, Markus,Grimme, Stefan,Stephan, Douglas W.,Paradies, Jan
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supporting information
p. 15253 - 15256
(2018/10/24)
-
- An efficient heterogeneous cross-coupling of aryl iodides with diphenylphosphine catalyzed by copper (I) immobilized in MCM-41
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The heterogeneous cross-coupling reaction of aryl iodides with diphenylphosphine was achieved in toluene at 115?°C in the presence of 10?mol% of phenanthroline-functionalized MCM-41-supported copper (I) complex (Phen-MCM-41-CuI) with Cs2CO3 as base, yielding various unsymmetric triarylphosphines in good to excellent yields. This protocol can tolerate a wide range of functional groups and does not need the use of expensive additives or harsh reaction conditions. This heterogeneous Cu (I) catalyst exhibited the same catalytic activity as homogeneous CuI/Phen system, and could easily be recovered by a simple filtration of the reaction solution and recycled up to seven times without significant loss of activity.
- Fang, Zhiqiang,Cai, Mingzhong,Lin, Yang,Zhao, Hong
-
-
- A practical synthesis of unsymmetrical triarylphosphines by heterogeneous palladium(0)-catalyzed cross-coupling of aryl iodides with diphenylphosphine
-
The heterogeneous cross-coupling reaction of aryl iodides with diphenylphosphine was achieved in DMAc at 130 °C in the presence of 1.0 mol% of MCM-41-supported tridentate nitrogen palladium(0) complex [MCM-41-3N-Pd(0)] with KOAc as base, yielding a variety of unsymmetrical triarylphosphines in good to excellent yields. The turnover frequency (TOF) of the catalyst can reach 30.67 h?1. This new heterogeneous palladium(0) catalyst could easily be prepared by a simple procedure from commercially readily available reagents, and exhibited the same catalytic activity as homogeneous Pd(OAc)2 or Pd(PPh3)4, and could be recovered by filtration of the reaction solution and recycled at least seven times without significant loss of catalytic activity.
- Xu, Zhaotao,Wang, Pingping,Chen, Qiurong,Cai, Mingzhong
-
-
- Synthesis of O,N,O[sbnd]P multidentate ligands and the formation of early–late heterobimetallic complexes
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A multidentate O,N,O[sbnd]P ligand 4 designed for early–late heterobimetallic (ELHB) complexes was synthesized. The ligand 4 has an O,N,O-tridentate ligand moiety and a triarylphosphine group. The O,N,O-moiety based on lutidine scaffold selectively coordinated to early transition metals such as titanium and niobium in the reaction with the corresponding metal alkoxides to form mononuclear complexes. Coordination of the triarylphosphine moiety to the niobium atom was negligible in the Nb-ONO[sbnd]P complex according to 31P NMR spectroscopy, whereas a part of the phosphorus atom coordinated to the titanium atom in the Ti-ONO[sbnd]P complex. Addition of [PdCl(π-allyl)]2 or [RhCl(cod)]2 to the Nb-ONO[sbnd]P complex gave rise to the formation of ELHB complexes. Thus, the one-pot preparation of ELHB complexes was achieved by simple procedure.
- Suzuki, Noriyuki,Yoneyama, Satoru,Shiba, Keisuke,Hasegawa, Takeshi,Masuyama, Yoshiro
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p. 355 - 363
(2017/12/01)
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- Superphenylphosphines: Nanographene-Based Ligands That Control Coordination Geometry and Drive Supramolecular Assembly
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Tertiary phosphines remain widely utilized in synthesis, most notably as supporting ligands in metal complexes. A series of triarylphosphines bearing one to three hexa-peri-hexabenzocoronene (HBC) substituents has been prepared by an efficient divergent route. These "superphenylphosphines", P{HBC(t-Bu)5}nPh3-n (n = 1-3), form the palladium complexes PdCl2L2 and Pd2Cl4L2 where the isomer distribution in solution is dependent on the number of HBC substituents. The crystalline structures of five complexes all show intramolecular π-stacking between HBC-phosphines to form a supramolecular bidentate-like ligand that distorts the metal coordination geometry. When n = 2 or 3, the additional HBC substituents engage in intermolecular π-stacking to assemble the complexes into continuous ribbons or sheets. The phosphines adopt HBC's characteristics including strong optical absorption, green emission, and redox activity.
- Smith, Jordan N.,Hook, James M.,Lucas, Nigel T.
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supporting information
p. 1131 - 1141
(2018/02/07)
-
- [18F]-Fluoride capture and release: azeotropic drying free nucleophilic aromatic radiofluorination assisted by a phosphonium borane
-
[18F]-Fluoride ready for aromatic nucleophilic substitution was prepared according to a simple process including trapping of aqueous [18F]-fluoride on a cartridge pre-loaded with the phosphonium borane [(Ph2MeP)C6H4(BMes2)]+, then releasing by elution of TBACN in dry acetonitrile. Subsequent radiofluorination was successfully applied to a model reaction and to the radiosynthesis of [18F]-setoperone.
- Perrio, Cécile,Schmitt, Sébastien,Pla, Daniel,Gabba?, Fran?ois P.,Chansaenpak, Kantapat,Mestre-Voegtle, Béatrice,Gras, Emmanuel
-
supporting information
p. 340 - 343
(2017/01/03)
-
- Tuning the cytotoxicity of ruthenium(ii) para-cymene complexes by mono-substitution at a triphenylphosphine/phenoxydiphenylphosphine ligand
-
The new complexes [RuCl2(η6-p-cymene)(κP-Ph2PR)] [R = 4-C6H4OSiMe2tBu, 1; R = 4-C6H4Br, 2; R = OC(O)CHCl2, 3; R = OPh, 4; R = O(2-C6H4SiMe2tBu), 5] and [Ru(C2O4)(η6-p-cymene){κP-Ph2PO(2-C6H4(SiMe2tBu))}], 6, were obtained in 83-98% yield from Ru(ii) arene precursors by three different synthetic strategies. The unprecedented phosphine Ph2P(O(2-C6H4SiMe2tBu)) was synthesized in 86% yield from 2-C6H4Br(OSiMe2tBu) and Ph2PCl, via intramolecular oxygen to carbon 1,3 migration of the silyl group (retro-Brook rearrangement). All the complexes were fully characterized by analytical and spectroscopic methods, and by single crystal X-ray diffraction in the cases of 3, 4, 5 and 6. Complexes 1-6 and the model compounds [RuCl2(η6-p-cymene)(κP-PPh3)] (Ru-PPh3) and [Ru(C2O4)(η6-p-cymene)(κP-PPh3)] (Ru-PPh3-O) underwent slow degradation in chloroform solutions upon air contact; the mixed valence complex [(η6-p-cymene)Ru(μ-Cl)3RuCl2(κP-PPh3)], 7, was isolated from a solution of Ru-PPh3 in CHCl3, and X-ray identified. The antiproliferative activity of 1-6 and Ru-PPh3, Ru-PPh3-O and [RuCl2(η6-p-cymene)(κP-PTA)] (RAPTA-C) was assessed towards the triple-negative breast cancer cell line MDA-MB-231, the ovarian carcinoma cell line A2780 and human skin fibroblasts (HSF). Complexes 1, 2, 5 and 6 displayed IC50 values significantly lower than that of cisplatin, with 2 providing a more potent cytotoxic effect on MDA-MB-231 and A2780 cancer cells compared to the noncancerous cell line (HSF). The stability of all complexes in DMSO/water solution was elucidated by NMR and conductivity measurements, and in particular 35Cl NMR spectroscopy was helpful to check the possible chloride dissociation. The stability studies suggest that the cytotoxic activity in vitro of the compounds is mainly ascribable to Ru(ii) species still bound to the phosphorus ligand.
- Biancalana, Lorenzo,Zacchini, Stefano,Ferri, Nicola,Lupo, Maria Giovanna,Pampaloni, Guido,Marchetti, Fabio
-
supporting information
p. 16589 - 16604
(2017/12/15)
-
- Palladium-catalyzed C–P(III) bond formation reaction with acylphosphines as phosphorus source
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Palladium-catalyzed C–P(III) bond formation reaction employing acylphosphines as the phosphorus source was developed. Under the optimized conditions, acylphosphines could react with aryl halides directly affording trivalent phosphines in up to 94% yield.
- Yu, Rongrong,Chen, Xingyu,Wang, Zhiqian
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p. 3404 - 3406
(2016/07/11)
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- Phosphine oxide-based compound and organic light emitting device comprising the same
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Phosphine oxide based compounds and is disclosure is an organic light emitting device. (by machine translation)
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Paragraph 0340; 0374; 0375; 0376
(2016/11/24)
-
- AROMATIC COMPOUNDS AND ORGANIC ELECTRONIC DEVICE USING THE SAME
-
The present invention relates to an organic electronic device wherein an organic substance layer has a novel compound which improves the service life, efficiency, driving voltage reduction, and stability of the organic electronic device. More specifically, in the present invention, the organic electronic device is an electrode using holes and/or electrons and a device which needs the exchange of electric charges between organic substances. The organic electronic device is divided largely into two devices by an operation principle.
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Paragraph 0166; 0175; 0176
(2017/01/09)
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- HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
-
Provided in the present invention are a heterocyclic compound and an organic light emitting device comprising the same. Provided in the present invention is a heterocyclic compound presented by following chemical formula 1. The heterocyclic compound according to embodiments of the present invention has a proper energy level, and has excellent electrochemical stability and thermal stability. Therefore, an organic light emitting device including the compound provides high efficiency and/or high driving stability.
- -
-
Paragraph 0393; 0396; 0397
(2017/06/02)
-
- A new heterotopic Ar-BIAN ligand with a pendant P donor site
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The heterotopic ligand 1-[4-(4-diphenylphosphanylphenyl)phenylimino]-2-[3,5-bis(trifluoromethyl)phenylimino]acenaphthene, PN2, was prepared and characterized by NMR spectroscopic and MS methods. Depending on the size and the electronic properties of the metal reagent M, the two binding sites of the new ligand show selective coordination. At 1:1 molar ratio of PN2 and M, the sterically more demanding [Pd(dppe)]2+ and [Pd(dppp)]2+ cations coordinate only to the chelating nitrogen atoms while the less bulky [Pd(dppm)]2+ binds both to the imino and the phosphane donor groups. A 2:1:2 mixture of PN2, [Pd(dppm)(OTf)2] and [Pd(dppe)(OTf)2] results in the formation of a complex in which the [Pd(dppm)]2+ unit selectively coordinates to the terminal P atoms while the more voluminous dppe counterpart resides at the imino nitrogens. On the contrary, the [Pd(dppm)]2+ complex selectively binds to the chelating nitrogen atoms if the Ph2P group is ligated to Au+ center. In the interaction of [Au(PN2)2]PF6 with Ag(OTf), the silver ions do not replace Au+ in the P-Au bonds but occupy the chelating position.
- Szalontai,Szabó,Besenyei
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p. 156 - 165
(2015/04/27)
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- Condensed-cyclic compound and organic light emitting device comprising the same
-
Disclosed are a condensed-ring compound and an organic light emitting device comprising the same. The condensed-ring compound is represented by the chemical formula 1-2 or 1-3. The organic light emitting device comprising the condensed-ring compound can have a low driving voltage, high efficiency, high brightness, and long lifespan.COPYRIGHT KIPO 2016
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Paragraph 0471; 0506; 0507; 0508; 0509; 0510
(2016/10/07)
-
- Highly efficient yellow phosphorescent organic light-emitting diodes with novel phosphine oxide-based bipolar host materials
-
Two bipolar host materials, (4-((4-(naphthalen-1-yl(phenyl)amino)naphthalen-1-yl)(phenyl)amino)phenyl)diphenylphosphine oxide (POpN) and (3-((4-(naphthalen-1-yl(phenyl)amino)naphthalen-1-yl)(phenyl)amino)phenyl)diphenylphosphine oxide (POmN), comprising a hole-transporting N1-(naphthalen-1-yl)-N1,N4-diphenylnaphthalene-1,4-diamine (NPNA2) donor and an electron-transporting phosphine oxide (PO) acceptor at different positions of the phenyl bridge have been synthesized. POpN (glass transition temperature Tg = 119 °C) and POmN (Tg = 115 °C) exhibit high morphological stability. Two yellow phosphorescent organic light-emitting diodes (PhOLEDs, ITO (indium tin oxide)/TAPC (1,1-bis[4-(di-p-tolylamino)phenyl]cyclohexane, 40 nm)/POpN or POmN: Ir(bt)2(acac) (bis(2-phenylbenzothiozolato-N,C2′)iridium(acetylacetonate), 15 wt%, 20 nm)/TmPyPB (1,3,5-tri(m-pyrid-3-yl-phenyl)benzene, 40 nm)/LiF (1 nm)/Al (100 nm)) exhibit maximum luminances (Lmax) of 82:057 and 78:385 cd m-2, maximum current efficiencies (ηc,max) of 68.28 and 44.95 cd A-1, respectively, with low efficiency roll-off.
- Zhang, Song,Xu, Qiu-Lei,Xia, Jing-Cheng,Jing, Yi-Ming,Zheng, You-Xuan,Zuo, Jing-Lin
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p. 11540 - 11547
(2015/11/11)
-
- A new compound and an organic electronic device using the same
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The present invention provides a new compound and an organic electronic device using the same. The compound according to the present invention may serve as hole injection, hole transporting, electron injection and transporting, and light emitting materials and the like in an organic electronic device comprising an organic light emitting device, and the organic electronic device according to the present invention shows excellent properties in terms of efficiency, driving voltage and service life.
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-
Paragraph 0080; 0085
(2016/10/08)
-
- NEW COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
-
The present invention relates to a compound capable of improving the lifetime, efficiency, and electrochemical and thermal stability of an organic light emitting device and an organic light emitting device containing the compound in an organic layer. The present invention includes chemical derivatives which have a chemical structure performing various functions required in an organic light emitting device according to a substituent.
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Paragraph 0118-0120
(2016/10/20)
-
- HETERO-CYCLIC COMPOUND AND ORGANIC ELECTRONIC DEVICE COMPRISING THE SAME
-
In the present invention, provided are a hetelcyclic compound and an organic electronic device including the same. In the present invention, provided are a heterocyclic compound denoted by chemical formula 1 and an organic electronic device including the same wherein the heterocyclic compound can be used as materials of organic layers from an organic light-emitting device and an organic electronic device, thereby improving efficiency, low driving voltage and/or longevity property in the organic light-emitting device and the organic electronic device.COPYRIGHT KIPO 2015
- -
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Paragraph 0316; 0317; 0318; 0319;0320
(2016/10/09)
-
- HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
-
Provided in the present invention are a heterocyclic compound and an organic light emitting device including the same. The heterocyclic compound according to embodiments of the present invention has a proper energy level, and has excellent electrochemical stability and thermal stability. Therefore, the organic light emitting device including the compound provides high efficiency and/or high driving stability. Moreover, provided in an embodiment of the present invention is an organic light emitting device which comprises a first electrode; and a second electrode facing a first electrode; and an organic substance layer of one or more layer including a light emitting layer formed between the first electrode and the second electrode, wherein one or more layer among the organic substance layer includes the heterocyclic compound.COPYRIGHT KIPO 2015
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-
Paragraph 0305-0307; 0310-0311
(2016/10/10)
-
- Effect of triarylphosphane ligands on the rhodium-catalyzed hydrosilylation of alkene
-
A series of triarylphosphanes (1a, 2a, 3a, 4a, 5a, 6a, 7a, 8a, 9a, 10a, 11a) have been synthesized. An X-ray crystal structure analysis of (2-bromophenyl)diphenylphosphane (1a) unambiguously confirmed the constitution of the functionalized phosphane. The hydrosilylation reaction of styrene with triethoxysilane catalyzed with RhCl3/triarylphosphane was studied. In comparison with the classic Wilkinson's catalyst, rhodium complexes with functionalized triarylphosphane ligands are characterized by a very high catalytic effectiveness for the hydrosilylation of alkene. Among these catalysts tested, RhCl3/diphenyl(2-(trimethylsilyl)phenyl)phosphane (8a) exhibited excellent catalytic properties. Using this silicon-containing phosphane ligand for the rhodium-catalyzed hydrosilylation of styrene, both higher conversion of alkene and higher β-adduct selectivity were obtained than with Wilkinson's catalyst.
- Xue, Mei,Li, Jiayun,Peng, Jiajian,Bai, Ying,Zhang, Guodong,Xiao, Wenjun,Lai, Guoqiao
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p. 120 - 126
(2014/02/14)
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- Novel phosphite palladium complexes and their application in C-P cross-coupling reactions
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A mono- and a 1,3-bis-phosphite arene ligand based on 2,2′-biphenol have been synthesized in order to study the synthesis of the corresponding palladium(II) complexes starting from different Pd precursors. Novel bis-phosphite palladium complex 1 [PdCl2(L)2] (L = dibenzo[d,f][1,3,2]dioxaphosphepin, 6-phenoxy), C,P-chelate bonded monophosphite palladium complex 2 [Pd(κ2-L)(μ-Cl)]2, and PCP-pincer palladium complex 3 have been prepared from these ligands in promising to excellent yields (50-95%). Additionally, complexes 1 and 3 have been characterized by X-ray crystal structure determinations. The application of 2,6-bis-phosphite pincer palladium(II) complex 3 in C-P cross-coupling between diphenylphosphine-borane and a wide range of various aryl iodides under very mild conditions is reported. Kinetic investigations indicate that 3 merely acts as a pre-catalyst and that Pd nanoparticles are the actual catalytically active species.
- Li, Jie,Lutz, Martin,Spek, Anthony L.,Van Klink, Gerard P.M.,Van Koten, Gerard,Klein Gebbink, Robertus J.M.
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experimental part
p. 2618 - 2628
(2010/11/21)
-
- New linker systems for superior immobilized catalysts
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The rigid linkers E(p-C6H4PPh2) 4 (E = Si, Sn) have been synthesized from the corresponding precursors E(p-C6H4Br)4 and immobilized by forming one (E = Si) or three (E = Sn) phosphonium groups that are attached to the silica support by electrostatic interactions. The remaining unquaternized phosphines are coordinated to Wilkinson-type Rh complexes. The catalyst immobilized by the rigid scaffold with three surface-bound phosphonium groups (E = Sn) displays superior catalytic activity and lifetime with respect to the hydrogenation of dodecene. This catalyst can be recycled 30 times in a batchwise manner under standardized conditions. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
- Beele, Bjoern,Guenther, Johannes,Perera, Melanie,Stach, Michaela,Oeser, Thomas,Bluemel, Janet
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supporting information; experimental part
p. 2729 - 2731
(2011/02/18)
-
- Synthesis of new triphenylphosphines with pending ethynyl substituents
-
The straightforward isolation and characterization of new triphenylphosphines possessing a pendent ethynyl substituent on one or several peripheral aryl ring(s) are reported. The synthesis of this family of compounds is achieved by retro-Favorsky reactions from the corresponding propargylic alcohol derivatives, themselves obtained following a classic Sonogashira-type coupling between the ad hoc bromophenyl phosphines and 2-methylbut-3-yn-2-ol.
- Grelaud, Guillaume,Argouarch, Gilles,Paul, Frédéric
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scheme or table
p. 3786 - 3788
(2010/08/07)
-
- A new homogeneous polymer support based on syndiotactic polystyrene and its application in palladium-catalyzed Suzuki-Miyaura cross-coupling reactions
-
Soluble syndiotactic polystyrene-supported triphenylphosphine (sPS-TPP) was synthesized by reacting borylated syndiotactic polystyrene with (4-bromophenyl)diphenylphosphine. A palladium catalyst, supported on sPS-TPP, effectively catalyzed Suzuki-Miyaura coupling reactions of aryl halides under homogeneous conditions. The polymer-supported palladium complex was recovered quantitatively by adding an equal volume of poor solvent to the polymer, and coupling products could be easily isolated by evaporating the solvents. The recovered polymer complex was reused several times without significant loss of activity. The Royal Society of Chemistry 2009.
- Shin, Jihoon,Bertoia, Julie,Czerwinski, Kenneth R.,Bae, Chulsung
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experimental part
p. 1576 - 1580
(2010/05/19)
-
- Radical phosphination of organic halides and alkyl imidazole-1- carbothioates
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Taking advantage of a radical-based methodology, mild and chemoselective phosphination reactions of organic halide and alkyl imidazole-1-carbothioates have been developed. The mild reaction conditions allow labile functional groups to survive during the reaction. Copyright
- Sato, Akinori,Yorimitsu, Hideki,Oshima, Koichiro
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p. 4240 - 4241
(2007/10/03)
-
- Novel Syntheses of Mono- and Bisphosphonated Aromatic Phosphanes by Consecutive Pd-Catalyzed P-C Coupling Reactions and Nucleophilic Phosphanylation - X-ray Structure of Ph2P-C6H4-m-PO3Na2 · 5.5 H2O · iPrOH
-
The triphenylphosphane derivatives 2a and 5, bearing one and two phosphonic ester groups, are accessible in high yields by consecutive Pd-catalyzed P-C coupling reactions of p-bromoiodobenzene with Ph2PH and PhPH2, respectively, and then with diethyl phosphite. Ester hydrolysis yields the highly water-soluble sodium salts of mono- and bisphosphonated triphenylphosphane, 3a and 6, respectively. On reaction of the p- and m-fluorophenylphosphonic diethyl esters 7a, 7b with Ph2PK and subsequent ester hydrolysis the isomeric disodium (diphenylphosphano)phenylphosphonates 3a, 3b were obtained. The X-ray structure of Ph2P(C6H4-m-PO3Na2) · 5.5 H2O · iPrOH (space group Cmc21) has been determined. In the solid state, it forms a layer structure with hydrophilic (PO32-, H2O, iPrOH) and hydrophobic (Ph2P) compartments, in which the PO32- anionic groups are not engaged in coordination of the sodium cations.
- Machnitzki, Peter,Nickel, Thomas,Stelzer, Othmar,Landgrafe, Claudia
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p. 1029 - 1034
(2007/10/03)
-
- Wittig reactions in water. Synthesis of new water-soluble phosphonium salts and their reactions with substituted benzaldehydes
-
We report the synthesis of new phosphonium salts which are soluble and stable in basic aqueous solution. The Wittig reactions of these phosphonium salts with substituted benzaldehydes in aqueous sodium hydroxide are discussed. These reactions exclude the use of any organic solvents and the products are isolated by a simple filtration.
- Russell, Matthew G.,Warren, Stuart
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p. 7995 - 7998
(2007/10/03)
-
- A new synthesis of hydrophilic carboxylated arylphosphines
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An efficient synthetic procedure for the preparation of versatile functionally substituted arylphosphines from commercially available starting materials is reported together with alternative routes for (carboxyphenyl)diphenyl phosphines.
- Ravindar,Hemling,Schumann,Blum
-
p. 841 - 851
(2007/10/02)
-
- Palladium-Catalyzed Coupling of Aryl Halides with (Trimethylstannyl)diphenylphosphine and (Trimethylsilyl)diphenylphosphine
-
The palladium-catalyzed reaction of aryl halides with either (trimethylsilyl)diphenylphosphine or (trimethylstannyl)diphenylphosphine gives aryldiphenylphosphines in good yields, under relatively mild conditions (50-70 deg C, benzene).The reaction tolerates a number of functional groups including methyl ethers, esters, ketones, nitriles, anilides, and certain halogens.The nitro and aldehyde groups as well as compounds containing groups such as amino and hydroxyl are not tolerated.
- Tunney, S. E.,Stille, J. K.
-
p. 748 - 753
(2007/10/02)
-
- Triaryl-phosphine compounds
-
Oligomeric or polymeric triaryl- and substituted triarylphosphine compounds which are non-digestible and non-absorbable by animals are disclosed. These compounds act as antioxidants by inhibiting the buildup of hydroperoxides of unsaturated fatty acids, e.g., in foods.
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