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Artykuły w czasopismach na temat "Couplage croisé de Stille"
Jacquemod, G., Y. Charlon, Z. Wei, Y. Leduc i P. Lorenzini. "Application de la technologie FDSOI pour la conception de nouvelles topologies de circuits analogiques et mixtes". J3eA 18 (2019): 1021. http://dx.doi.org/10.1051/j3ea/20191021.
Pełny tekst źródłaSingh, Harsh Verdhan, D. Venkata Siva Prasad i Shrivishal Tripathi. "Wideband MIMO Antenna Isolation Enhancement Using 4th-Order Cross-Coupled Decoupling Circuit Amélioration de l'isolation des antennes MIMO à large bande à l'aide d'un circuit de découplage à couplage croisé d'ordre 4". IEEE Canadian Journal of Electrical and Computer Engineering, 2022, 1–10. http://dx.doi.org/10.1109/icjece.2022.3143865.
Pełny tekst źródłaRozprawy doktorskie na temat "Couplage croisé de Stille"
Audet, Florian. "Development of new access routes to fluorinated building blocks for agrochemical applications". Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAF002.
Pełny tekst źródłaFluorine is naturally occurring on Earth in the form of salts, the most notable being calcium fluoride. Over the last decades, has been used in numerous industrial applications, including pharmaceuticals and agrochemicals. Indeed, many active ingredients used in these fields contain at least one fluorine atom, giving them unique properties by modulating their physico-chemical and biological parameters.The objective of this thesis, in partnership with Bayer CropScience, was to develop new ways of accessing fluorinated synthons for agrochemical applications. We started by investigating a cross-electrophile coupling reaction under electrochemical conditions to access the difluoromethylene moiety. N-Polyfluoroalkylation reactions were then developed using sulfuryl fluoride as the key reagent. Finally, a cross-coupling reaction with a new (1-fluorocyclopropyl)metaloid reagent was developed, enabling the direct introduction of this emerging fluorinated group
Amans, Dominique. "Obtention d'unités polyéniques : application à la synthèse de composés biologiquement actifs". Paris 6, 2007. http://www.theses.fr/2007PA066277.
Pełny tekst źródłaAwada, Hussein. "Elaboration des matériaux hybrides, organiques/ oxydes métalliques pour le photovoltaique organique". Thesis, Pau, 2014. http://www.theses.fr/2014PAUU3016/document.
Pełny tekst źródłaLes performances et la durée de vie des cellules solaires organiques sont fortement dépendantes de la qualité des matériaux de la couche active et des interfaces dans le dispositif. Dans ce manuscrit, nous avons développé des nouveaux matériaux hybrides organiques-inorganiques pour favoriser le contact entre les matériaux donneur/accepteur d’électrons et ainsi faciliter le transfert de charges à travers le dispositif. Tout d'abord, la synthèse de poly(3-hexylthiophène) P3HT fonctionnalisé par le triéthoxysilane a permis le greffage direct (« grafting-onto ») sur des oxydes métalliques. L’analyse des propriétés électro-optiques montre un transfert de charge efficace du polymère aux nanoparticules; ce qui suggère que ces matériaux sont des candidats potentiels pour l'application photovoltaïque. Dans la deuxième partie, nous avons montré pour la première fois, l’élaboration de brosses de polymères dits à faible bande interdite sur des surfaces d’oxydes métalliques par la technique « grafting-through ». Une densité de greffage élevée, un meilleur empilement des chaines de polymères et des propriétés optiques améliorées ont été obtenus grâce à la technique de greffage et aux caractéristiques du polymère greffé. Enfin, des brosses de P3HT ont été élaborées sur la surface d’oxyde d'indium et d’étain (ITO) en tant que couche de transport de trous de cellules solaires organiques. Les performances photovoltaïques ont montré que les monocouches auto-assemblées de P3HT (SAM) peuvent être une alternative au PEDOT: PSS
Medlej, Hussein. "Copolymères à blocs « rigide-rigide » pour les cellules photovoltaïques organiques". Thesis, Pau, 2011. http://www.theses.fr/2011PAUU3027/document.
Pełny tekst źródłaThe performances of organic solar cells based on the concept of bulk heterojunction configuration are strongly influenced by the optoelectronic properties of the electron donor polymer. The aim of this thesis was to develop new π-conjugated polymers to allow a better exploitation of the solar spectrum and thus improving the photogeneration of charges. For this,several polythiophene derivatives substituted by phenyl aromatic groups have been synthesized by the GRIM method, note the homopolymer poly[(3-(4-hexylphenyl)thiophene] (P3HPT) and the diblock copolymer poly[3-(4- exylphenyl)thiophene]-block-poly(3- hexylthiophène) (P3HPT-b-P3HT). We also studied a new family of low band gap polymers based on the alternation of electron-rich thiophene and dithieno[3,2-b:2′,3′-d]silole units andelectron-deficient 2,1,3-benzothiadiazole units. After synthesis of the various monomers, alternating copolymers were then obtained by Stille cross-coupling polycondensation. The different synthesized materials were first characterized by thermogravimetric analysis and by differential scanning calorimetry to study their thermal properties. Then, structural(especially XRD and neutron), optical (UV-visible) and morphological (AFM) characterizations were performed. From the obtained results, we were able to evaluate the relation between structures and properties of materials. Finally, photovoltaic cells based on the synthesized polymers were performed and their performances were correlated to material properties
James, Damien. "Développement d'outils organométalliques en vue du transfert de méthyle, application à la synthèse de radiotraceurs pour la TEP". Thesis, Bordeaux 1, 2009. http://www.theses.fr/2009BOR13900/document.
Pełny tekst źródłaThe modified Stille cross-coupling developed by Pr. Fouquet’s group was applied to the methylation of nucleosides, dinucleotides and oligonucleotides in order to develop a methodology for labelling aptamers with carbon 11 for the early diagnosis of cancer by PET. This pallado-catalyzed cross-coupling is based on the use of monoorganotin activated by a source of fluoride accelerating the reaction. Initial methodology tests helped to finalize the transfer of methyl group on various nucleosides and a dinucleotide, with reaction conditions compatible with the short half-life of carbon 11 (20.4 min) and the special nature of oligonucleotides. Then, this methodology was applied to oligonucleotide models obtained after incorporation of the most promising nucleosides
Rodriguez, Alain. "Monoorganoétains activés : nouveaux réactifs pour le couplage de Stille". Bordeaux 1, 1998. http://www.theses.fr/1998BOR10588.
Pełny tekst źródłaGervais, Bruno. "Synthèse de caerulomycines par réactions de métallation et de couplage croisé en série pyridinique". Rouen, 1995. http://www.theses.fr/1995ROUES009.
Pełny tekst źródłaYalcouye, Boubacar. "Synthèse atropo-sélective de la partie biarylique de la (-)-stéganacine via le couplage croisé de Suzuki-Miyaura et le couplage ARYNE". Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF059.
Pełny tekst źródłaThe interesting biological properties of axially chiral biaryls and the challenge of Csp2-Csp2 bond formation ofthe biaryl motif have aroused keen interest among synthetic organic chemists. The axially chiral biaryls areprivileged structures in medicinal chemistry and in asymmetric catalysis. The goal of our research is based onthe control of the axial chirality of (-)-steganacin using two differents atropo-selective approaches: Suzuki-Miyaura cross-coupling (in presence of transition metals), and ARYNE coupling (without any transitionmetals). The atropo-diastereoselective Suzuki-Miyaura cross-coupling was carried out using enantiopure β-hydroxysulfoxydes as chiral auxiliary. The resulting diastereopure biaryl was converted into an intermediatereported in the literature without any epimerization of axial chirality. The second approach was the atropodiastereoselectiveARYNE coupling which was tested for the first time with the enantiopure p-tolylsulfoxyde.However, we encountered a problem due to lack of reactivity of lithiated arylsulfoxide. Finally, the axialchirality of (-)-steganacin was controlled using oxazolines as chiral auxiliary
Gilles, Pierre. "Couplage croisé induit par SmI2 de nitrones avec des acrylates silylés : synthèse de Pyrrolizidines polyhydroxylées". Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00647130.
Pełny tekst źródłaRousseau, Lidie. "Catalyse au fer des réactions de couplage croisé : mécanismes, identification et spéciation des intermédiaires réactionnels". Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASF020.
Pełny tekst źródłaFor a few years iron catalysis has been considered as a cheap and environmentally benign alternative for traditional noble metal catalysts. Still, because of its hardly controlled access to a large scope of oxidation and spin states, iron’s reactivity as a catalyst has not been fully understood yet. This work first investigates the question of iron’s catalytically active oxidation states in cross-coupling reactions, through an experimental and computational study. The second part of the manuscript deals with the comprehension of some Fe-catalyzed cross-coupling reactions. The detrimental homocoupling pathway of an aryl-aryl Kumada reaction is elucidated, and the mechanism of the reaction between organomanganese nucleophiles and alkenyl electrophiles is investigated. Finally, the modification of the metal’s coordination sphere thanks to the addition of σ-donating ligands helps to understand the matter of the transmetallation degree control during the cross-coupling process. This work uses classic inorganic chemistry techniques, along with several spectroscopies (NMR, EPR, Mössbauer) and theoretical DFT calculations
Streszczenia konferencji na temat "Couplage croisé de Stille"
Silvério, Gabriel André, Pedro Arthur Possan, Mateus Pinto Marchetti, Isabela Louise Weber, Vera Cristina Terra, Karen Luiza Ramos Socher, Nancy Watanabe i Carlos Cesar Conrado Caggiano. "Multiple cranial couple syndrome secondary to neurosyphilis: case report". W XIV Congresso Paulista de Neurologia. Zeppelini Editorial e Comunicação, 2023. http://dx.doi.org/10.5327/1516-3180.141s1.548.
Pełny tekst źródłaPaul, Eldho, Appapillal Thavalingam i Pumendu K. Das. "Ultimate Strength and Structural Reliability Analysis of FPSO Hull Girder". W ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28401.
Pełny tekst źródłaMayeed, Mohammed S., Soumya S. Patnaik i Ricky Mitchell. "Heat Transfer Enhancement Using Miniaturized Channel Sections With Surface Modifications". W ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65187.
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