Academic literature on the topic 'Synthèse de diphosphines'
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Journal articles on the topic "Synthèse de diphosphines"
Niecke, Edgar, Rainer Streubel, Martin Nieger, and D. Stalke. "Synthese und Struktur eines 1H-Diphosphirens." Angewandte Chemie 101, no. 12 (December 1989): 1708–10. http://dx.doi.org/10.1002/ange.19891011217.
Full textFenske, Dieter, and Kurt Merzweiler. "Ein Beitrag zur Synthese neuer chiraler Phosphanliganden / Synthesis of a New Chiral Phosphine Ligand." Zeitschrift für Naturforschung B 44, no. 8 (August 1, 1989): 879–83. http://dx.doi.org/10.1515/znb-1989-0803.
Full textWaltz, Marion, Martin Nieger, Dietrich Gudat, and Edgar Niecke. "Synthese, Struktur und Reaktivit�t eines 2,4-Diphosphino-1,3-diphospha-2,4-disilacyclobutans." Zeitschrift f�r anorganische und allgemeine Chemie 621, no. 11 (November 1995): 1951–57. http://dx.doi.org/10.1002/zaac.19956211120.
Full textFenske, Dieter, and Kurt Merzweiler. "Synthese neuer optisch aktiver Rh-Komplexe: Die Kristallstruktur von [(5S)-3,4-Bis(diphenylphosphino)-5-menthoxy-2(5H)-furanon](1,5-cyclooctadien)rhodium-hexafluorophosphat / Synthesis of New Optically Active Rh-Complexes: The Crystal Structure of [(5S)-3,4-Bis(diphenylphosphino)-5-menthoxy-2(5 H)-furanone](1,5-cyclooctadiene)rhodium-hexafluorophosphate." Zeitschrift für Naturforschung B 44, no. 8 (August 1, 1989): 884–88. http://dx.doi.org/10.1515/znb-1989-0804.
Full textFiedler, Tobias, Michał Barbasiewicz, Michael Stollenz, and John A. Gladysz. "Non-metal-templated approaches to bis(borane) derivatives of macrocyclic dibridgehead diphosphines via alkene metathesis." Beilstein Journal of Organic Chemistry 14 (September 7, 2018): 2354–65. http://dx.doi.org/10.3762/bjoc.14.211.
Full textCorfield, Peter W. R., and Uwe Seeler. "Crystal structure of bis(1,1,2,2-tetramethyldiphosphane-1,2-dithione-κ2S,S′)copper(I) tetrafluoridoborate." Acta Crystallographica Section E Crystallographic Communications 71, no. 6 (May 28, 2015): 716–19. http://dx.doi.org/10.1107/s2056989015009913.
Full textWolfsberger, Werner, Jürgen Bank, and Helmut Werner. "Synthese dreizähniger Phosphanliganden RP[(CH2)n]2 (Y = OR′ oder CO2R′, n = 1 oder 2) sowie einiger zweizähniger chiraler Phosphane R2PCH(CH3)CO2Me / Synthesis of Tridentate Phosphine Ligands RP[(CH2)nY]2 (Y = OR′ or CO2R′, n = 1 or 2) and Some Bidentate Chiral Phosphines R2PCH(CH3)CO2Me." Zeitschrift für Naturforschung B 50, no. 9 (September 1, 1995): 1319–28. http://dx.doi.org/10.1515/znb-1995-0904.
Full textBender, H. R. G., M. Nieger, and E. Niecke. "Synthese amino- und silylsubstituierter Triphosphane – Struktur des 1.1.3.3-Tetrakis(di-iso-propylamino)-2-trimethylsilyl- und des 1.1.3.3-Tetraphenyl-2-tri-iso-propylsilyl-triphosphans / Synthesis of Amino- and Silyl-Substituted Triphosphines – Structure of 1,1,3,3-Tetrakis(di-iso-propylamino)-2-trimethylsilyl- and 1,1,3,3-Tetraphenyl-2-tri-iso-propylsilyl-triphosphine." Zeitschrift für Naturforschung B 48, no. 12 (December 1, 1993): 1742–52. http://dx.doi.org/10.1515/znb-1993-1209.
Full textHobballah, Ahmad, Catherine Elleouet, and Philippe Schollhammer. "Triiron Complexes Featuring Azadiphosphine Related to the Active Site of [FeFe]-Hydrogenases: Their Redox Behavior and Protonation." Molecules 29, no. 14 (July 10, 2024): 3270. http://dx.doi.org/10.3390/molecules29143270.
Full textBendayan, Andrée, Henriette Masotti, Gilbert Peiffer, Chhan Siv, and Robert Faure. "Synthese de ligands de type amino-diphosphinites; etude en RMN 13C et 31P. Application a la dimerisation du butadiene par les complexes du nickel." Journal of Organometallic Chemistry 326, no. 2 (June 1987): 289–97. http://dx.doi.org/10.1016/0022-328x(87)80164-x.
Full textDissertations / Theses on the topic "Synthèse de diphosphines"
Laborde, Coralie. "Synthèse de diphosphines et d'acides phosphiniques chiraux." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20256.
Full textAtropisomeric diphosphine ligands play a crucial role in the synthesis of enantiopur molecules, particularly in pharmaceutical, agrochemical and flavors industries. Growing demand in asymmetric synthesis, impose to develop news ligands by rapid, economic and effective strategies of synthesis. This optically pure ligand was combined with multiples transition metal to form catalyst what will have used wide variety of entioselective reaction type.Over the past few years, a new family of ligands has emerged, possessing biheterocyclic skeleton and thus allowing the introduction of different steric and electronic interactions. We will report a efficient syntheses of the new atropisomeric five-membered heterocyclic diphosphines with original strategy of synthesis whose the main stages consist in a double heterocyclic construction. In the second part, we will develop an approach permitting to obtain atropochiral phosphonates with a similar strategy of synthesis from allenylphosphine oxides or allenylphosphonates as precursors
Siutkowski, Magali. "Diphosphines à phosphore asymétrique : Synthèse et évaluation en catalyse énantiosélective." Phd thesis, Ecole Polytechnique X, 2005. http://pastel.archives-ouvertes.fr/pastel-00001441.
Full textHajouji, Hassane. "Synthèse de diphosphines chirales à motifs phospholyle : applications en catalyse énantiosélective." Toulouse 3, 1992. http://www.theses.fr/1992TOU30191.
Full textCabou, Jérôme. "Synthèse d'une nouvelle classe de diphosphines ferrocéniques optiquement pures : utilisation en catalyse asymétrique." Lille 1, 2004. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2004/50376-2004-109-110.pdf.
Full textMadec, Jonathan. "Synthèse de nouvelles diphosphines et nouveaux phosphoramidites dissymétriques chiraux par atropoisomérie : étude de leurs propriétés en catalyse asymétrique." Phd thesis, Paris 6, 2004. http://pastel.archives-ouvertes.fr/pastel-00001086.
Full textFournier, Éric. "Synthèse et caractérisation de polymères organométalliques luminescents de cuivre(I) et d'argent(I) à base de diphosphines et diisocyanures." Mémoire, Université de Sherbrooke, 2003. http://savoirs.usherbrooke.ca/handle/11143/4620.
Full textMinois, Pauline. "Synthèse de mono et diphosphines dérivées d'amino acides ou de peptides, appliquées en chimie de coordination et pour le greffage de fullerène C60." Thesis, Dijon, 2013. http://www.theses.fr/2013DIJOS079/document.
Full textThe synthesis of secondary phosphine borane amino acids or dipeptides and their applications for the preparation of chiral ligands or for the grafting of fullerene, is described. These compounds were synthesized in good yield (up to 98%) without racemization. The principle of the synthesis is based on the alkylation of primary phosphine borane with a γ-iodo amino acid using phase transfer conditions. Tertiary diphosphine amino acids are obtained with 70% yield after a second alkylation. These compounds are one of the first examples of diphosphine grafted with a P-C bond on the side chain of amino acid. First of all, mono and diphosphine amino acid derivatives were used in asymmetric allylic substitution with palladium precursor or in asymmetric hydrogenation with rhodium precursor. In another hand, a cis platinum complex was synthesized with 60% yield from the diphosphine amino acid derivative. The cytotoxic properties of this complex were tested against human ovarian carcinogenic cell lines A2780. In the second part, the secondary phosphine borane amino acids and peptides have been used for grafting fullerene C60 by hydrophosphination using phase transfer conditions. The electrochemical study of the fullerene amino benzyl ester derivative has shown the cleavage of the P-C60 bond by electrolysis, affording the free fullerene and the secondary phosphine borane amino ester moiety. This work opens new perspectives for the chemistry of fullerene and phosphine derivatives of amino acids and peptides
Zwart, Guilhem. "Hydrogénolyse de (pseudo-)haloboranes et de chlorophosphines." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF049.
Full textThis thesis examines the challenges posed by uncertain access to chemical elements, exacerbated by a linear economic paradigm of their exploitation. The study focuses on boron and phosphorus, whose usage and recycling remain understudied. Boron, crucial in various industries, requires energy-intensive processes to be converted into active hydroboranes, used in fine chemistry. Two methods exist for their synthesis: the industrial method from borate, and the reaction of BCl₃ with a hydride donor. Using H₂ as a reducing agent could improve these processes. This research explores the synthesis of hydroboranes [9-BBN]₂ and [Cy₂BH]₂ from their halogenated and triflate derivatives, with a base and H₂. Base screening showed that trialkylamines, particularly NEt₃, are effective. The reaction relies on a frustrated Lewis pair mechanism to activate H₂. It was also found that dialkylboranes can catalyze the hydrogenolysis of other chloroboranes, particularly BCl₃, yielding HCl₂B· NEt₃ and H₂ClB·NEt₃. Finally, this strategy was extended to phosphorus, optimizing the hydrogenolysis of chlorophosphines into diphosphines. The method, effective for various substrates, proceeds in three steps : catalyst hydrogenolysis, hydride transfer, and base-assisted condensation into diphosphine. These transformations were modeled each time using density functional theory (DFT) and often present long reaction times (up to several days), but usually with good yields (> 70 %) under mild pressure and temperature conditions
Duprat, de Paule Sébastien. "Synthèse de nouvelles diphosphines chirales par atropoisomérie : utilisation en catalyse asymétrique et étude de l'influence des paramètres stériques et électroniques en hydrogénation asymétrique." Paris 6, 2002. http://www.theses.fr/2002PA066113.
Full textMotei, Rachid. "Nouveaux complexes de fer pour la modélisation du site actif des hydrogénases [FeFe] ou pour la commutation & Synthèse et caractérisation d'aminoesters isoxazoliniques." Thesis, Brest, 2017. http://www.theses.fr/2017BRES0160.
Full textIn the first part of this work, we realised a preliminary study to extend the series of dinuclear iron complexes [ Fe2(CO)4 (k2-P2N2) (μ-dithiolate)], including diphosphine ligands type P2N2, to complexes having an azadithiolate bridge, in order to study their behavior in acid medium and the role of different bases present in the second coordination sphere of these compounds. The new complexes [Fe2 (CO) 6 (k2-PPh2NR2) (μ -adtBn)] (R = Ph, Bn)) were obtained by reaction between the precursor [Fe2(CO)6(μ -adtBn)] and the cyclic diphosphines PPh 2NR2 (with R = Ph, Bn). These complexes have been spectroscopically and structurally characterized. We have also showed that the anion coordination modes (tcnsR)– in all these complexes are very different and affect, consequently, crystal lattices in a very important way. This suggests that the length of the alkyl chain of the anion (tcnsR)- should not be the only structural parameter affecting transition temperatures. The type of CN grouping (N3, N4, N5 or N6) involved in the coordination should then play an important role in the stacking of molecular entities in the crystal lattice as a result the intermolecular interaction, which are the origin of the spin transition characteristics (transition temperature, cooperativeness, ...), should be affected by the coordination mode of the anion.In the second part, we have realized the synthesis of our dipolarophile from serine and the preparation of dipoles (nitrile oxides). Their condensations with dehydroalanine allowed us to newly obtain isoxazolinic α-aminoesters. These novel isoxazolinic α-aminoesters were obtained in an accessible method, and under mild conditions by the 1,3-dipolar cycloaddition reaction. The obtained results prove the usefulness of this reaction as being a very efficient way to form new isoxazolines with good yields
Books on the topic "Synthèse de diphosphines"
Gorla, Fabrizio Giovanni. Synthese chiraler Platin(II)-Komplexe mit dreizähnig koordinierten Diphosphinen und ihre katalytischen Anwendungen. 1993.
Find full textBook chapters on the topic "Synthèse de diphosphines"
Donohue, P. C., J. Ferretti, and A. Wold. "Pyrite Type of Silicon Diphosphide." In Inorganic Syntheses, 173–76. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132456.ch36.
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