Literatura científica selecionada sobre o tema "Couplage croisse"
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Artigos de revistas sobre o assunto "Couplage croisse"
Beauviala, Muriel. "Regards croisés sur la Thérapie de couple". Gestalt 57, n.º 2 (27 de junho de 2022): 131–45. http://dx.doi.org/10.3917/gest.057.0131.
Texto completo da fonteMuller, Justine. "Les personnages féminins et masculins à l’épreuve du mentir-vrai dans L’Invitée de Beauvoir et L’Âge de raison de Sartre". Simone de Beauvoir Studies 32, n.º 2 (10 de novembro de 2022): 247–64. http://dx.doi.org/10.1163/25897616-bja10057.
Texto completo da fonteSylla, Omar, e Geneviève Platteau. "Le couple contemporain en Europe et en Afrique. Regards croisés". Cahiers critiques de thérapie familiale et de pratiques de réseaux 42, n.º 1 (2009): 255. http://dx.doi.org/10.3917/ctf.042.0255.
Texto completo da fonteFougeroux, Stessie. "Le jeu des croyances croisées. Un nouvel objet flottant en thérapie de couple". Thérapie Familiale Vol. 45, n.º 2 (24 de outubro de 2023): 120–36. http://dx.doi.org/10.3917/tf.242.0120.
Texto completo da fontePelletier, David. "Accéder au meilleur quartier possible : types de famille et ségrégation résidentielle croisée à Montréal". Articles 41, n.º 2 (15 de janeiro de 2013): 257–98. http://dx.doi.org/10.7202/1013493ar.
Texto completo da fonteBeaufreton, Julien. "Loft story ou l’élection d’un couple télégénique". Figures de l'Art. Revue d'études esthétiques 6, n.º 1 (2002): 203–20. http://dx.doi.org/10.3406/fdart.2002.1311.
Texto completo da fonteMokdad Zmitri, Meriem. "Quand le virtuel s’invite dans des familles et des couples traversés par des mutations culturelles et sociales". Dialogue 242, n.º 4 (15 de janeiro de 2024): 113–29. http://dx.doi.org/10.3917/dia.242.0113.
Texto completo da fonteJacquemod, G., Y. Charlon, Z. Wei, Y. Leduc e 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.
Texto completo da fonteKessaci, Lyasmine. "Fiction et vérité ( Dichtung und Wahrheit )". Recherches en psychanalyse N° 35/36, n.º 1/2 (5 de abril de 2024): 40–50. http://dx.doi.org/10.3917/rep2.035.36.0040.
Texto completo da fontePerron, Louis. "L’université comme enjeu de la rencontre du theion et du logos". Théologiques 14, n.º 1-2 (29 de novembro de 2006): 127–40. http://dx.doi.org/10.7202/014315ar.
Texto completo da fonteTeses / dissertações sobre o assunto "Couplage croisse"
Tang, Renhe. "New Catalytic Process for C-Heteroatom Bond Formation". Electronic Thesis or Diss., Lyon 1, 2024. http://www.theses.fr/2024LYO10275.
Texto completo da fonteThe main goal of this thesis is to design new catalytic methods for the synthesis of C-heteroatom bonds. The work is divided into three chapters, each focusing on a different catalytic system and reaction.The first chapter explores the use of nickel in combination with xantphos as a catalyst for the arylation of nucleophilic SeCF3 using aryl triflates as the coupling partner. This catalytic system demonstrates broad applicability for a variety of aryl triflate derivatives. Through a combination of stoichiometric experiments and density functional theory (DFT) studies, the mechanism of forming trifluoromethylselenated compounds was elucidated. This investigation provided insight into the key parameters that influence the reactivity of the catalytic system. The second chapter focuses on the development of a carboxylative C-N coupling reaction. We reported an efficient visible-light Phosphinoacridine/Pd-catalyzed system for synthesizing aryl carbamates from aryl halides, amines, and atmospheric CO2. The pivotal step involves controlling the oxidation state of the palladium catalyst through metal-to-ligand charge transfer (MLCT) to promote the reductive elimination step, thereby facilitating the formation of the desired aryl carbamates. The third chapter focuses on the development of an efficient visible-light acridine/Ni-catalyzed system for synthesizing aromatic amines through C-N coupling reactions. This system facilitates the coupling of primary and secondary amines, as well as sulfonamides, via C-N bond formation. The catalytic system consistently produces the desired aniline derivatives in high yields, showcasing its potential as a versatile and robust method for the synthesis of aromatic amines
Cheval, Nicolas. "Des couplages croisés à l'électronique moléculaire". Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAF051.
Texto completo da fonteHigh-technology devices (computers, TV, mobile phones, …) are manufactured from simple components (transistors, LED, …) which use silicium as semiconductor. In organic electronics, π- conjugated organic compounds with low HOMO-LUMO gap can show this property. This work is dealing with the synthesis of new organic semiconductors via alkyne metathesis polymerization.Dialkynyl compounds were synthetized. Their polymerization studies as well as electronic characterization were conducted by collaborating groups in an ANR project (CADISCOM). In an independent second part, palladium-catalyzed cross-coupling are of great importance in actual organic synthesis. Many studies have been focused on the organometallic partner of the reaction,but the electrophilic partner have received much less attention. In this work, we developed a new leaving group from cheap precursors that we applied in the four most well-known couplings (Suzuki, Stille, Sonogashira, Heck)
Zarcone, César. "Étude du couplage visqueux en milieu poreux : mesure des perméabilités relatives croisées". Toulouse, INPT, 1994. http://www.theses.fr/1994INPT128H.
Texto completo da fonteRouchet, Jean-Baptiste. "Etude de couplages croisés directs catalytiques décarboxylants d'acides picoliniques et cinnamiques". Thesis, Rouen, INSA, 2015. http://www.theses.fr/2015ISAM0019/document.
Texto completo da fonteThe functionalization of heterocycles arouse an interest both in supramolecular chemistry and in pharmaceuticals. Based on the so-called concept better with less, the development of direct functionalization methodologies of heterocycles involving C–H and C–CO₂H bonds has emerged as an efficient, modern alternative and complementary process to traditional cross coupling methods, avoiding thus the use of stoichiometric organometallic reagents that are often air and moisture sensitive. In this context, the aim of this PhD work was to develop new decarboxylative cross couplings, CO₂H / C-X and CO₂H / C−H, using substituted 2-carboxyazine N-oxides and α-methoxyacrylic acids as new coupling partners.The first part of this work has been focused on the development of the versatile Pd-catalyzed and Ag-assisted decarboxylative coupling of quinaldic and picolonic acids N-oxides as well as 3-carboxyisoquinoline acids with (hetero)aryl halides. Although copper (I) appeared to be more efficient by DFT calculations to perform ipsodecarboxylation-metallation step, only silver catalysis revealed to be much more adequate to achieve the conventional decarboxylative coupling and this was then pointed out with the high regioselectivity observed at the carboxy function site. This reaction showed a large reactivity spectrum and tolerated for the first time substituents on azinic core. It is also a synthetic alternative to the direct C−H arylation on azine N-oxides for the regioselective synthesis of 2-arylated substituted pyridines and 3-arylated isoquinolines. As application, a modular and flexible approach has been developed for the synthesis of the highly functionalized 1,3-substitute disoquinoline 5, shown as an antitumor agent.In the second part, the first Pd-catalyzed and Cu-assisted decarboxylative / C-H alkenylation of heterocycleswith various α−methoxyacrylic acids was reported offering general stereocontrolled access to heteroarylated enol ethers in geminal position. The direct introduction of vinyl ether allows to expand the panel of C-H bond functionalizations methodologies of heterocycles. The high potential for subsequent post-functional adjustment of the vinyl ether moiety enable thus the synthesis of heteroarylated α,β-enolizable ketones and polysusbituted alkenes
Yalcouye, 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.
Texto completo da fonteThe 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
Rérat, Alice. "Couplages croisés catalysés au cobalt entre des arylzinciques et divers substrats électrophiles". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLX066/document.
Texto completo da fonteThis thesis presents new cobaltcatalyzed cross-coupling reactions between arylzinc derivatives and various electrophilic reagents. After a general introduction on cobalt-catalysis and arylzinc compounds, the first chapter is dealing with the formation of diaryl ketones. Reaction between arylzinc bromides and ethyl chloroformate in presence of cobalt bromide and bipyridine ligand leads to the formation of symmetrical diaryl ketones with very good yields under simple conditions. It has been shown that ethyl chloroformate decomposes into carbon monoxide during the reaction. First attempts to extend this method to the synthesis of unsymetrical diaryl ketones are also described from arylzinc bromides and various carbonyl containing substrates. As for the second chapter, it is focused on the Negishi coupling between arylzinc bromides and an aryl bromide or an heteroaryl chloride. The advantage of this method is that the cobalt used to form the arylzinc bromide also serves to form the biaryl, hence there is no addition of another catalyst in the second step of the reaction. Results about the formation of biaryls are promising, but this reaction needs to be thorough. A similar methodology was used for the synthesis of new delayed fluorescence molecules to obtain highly efficient organic light emitting diodes. The third chapter describes the cobalt-catalyzed reaction between an arylzinc bromide and an electrophilic source of sulfur, a Bunte salt. However, these aryl sulfides can be easily oxidized in the reaction mixture and give sulfoxides and sulfones, which limit the use of this method. Finally, the last chapter is about preliminary works on the trifluoromethylation of arylzinc bromides from electrophilic or nucleophilic trifluoromethyl sources
Gervais, Bruno. "Synthèse de caerulomycines par réactions de métallation et de couplage croisé en série pyridinique". Rouen, 1995. http://www.theses.fr/1995ROUES009.
Texto completo da fonteGilles, 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.
Texto completo da fonteRousseau, 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.
Texto completo da fonteFor 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
Virolleaud, Marie-Alice. "Processus domino de métathèse cyclisante et couplage croisé : application à la synthèse de produits naturels". Lyon 1, 2006. http://www.theses.fr/2006LYO10174.
Texto completo da fonteCapítulos de livros sobre o assunto "Couplage croisse"
Eiguer, Alberto. "Clinique du couple et de la famille". In Clinique du couple et de la famille, 69–79. In Press, 2019. http://dx.doi.org/10.3917/pres.drwes.2019.01.0070.
Texto completo da fonteBonnomet, F., A. d'Ambrosio e M. Ehlinger. "Le couple métal-métal : peut-on encore y croire ?" In La Prothèse Totale de Hanche dans Tous ses états, 131–40. Elsevier, 2017. http://dx.doi.org/10.1016/b978-2-294-75116-5.00015-5.
Texto completo da fonte