Dissertations / Theses on the topic 'Homocouplage de dérivés du bore'
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Cammoun, Chama. "Réactions catalysées par Pd(oAc)2/benzoquinone : un procédé général pour l'activation de liaisons Ar-H, Ar-B et C-H, via une oxydation électrochimique." Paris 6, 2008. http://www.theses.fr/2008PA066285.
Full textPedneault, Carl. "Étude du blanchiment réducteur à l'aide de dérivés du bore." Thèse, Université du Québec à Trois-Rivières, 1998. http://depot-e.uqtr.ca/4810/1/000642371.pdf.
Full textTangi, Abdellah. "Etude d'hydroborates de type déca, undéca et de leurs dérivés métalliques." Lyon 1, 1986. http://www.theses.fr/1986LYO10049.
Full textEuzenat, Lisenn. "Dérivés aminoboranes monomères : des réactifs originaux pour la formation pallado-catalysée de liaisons carbone-bore." Rennes 1, 2003. http://www.theses.fr/2003REN1A010.
Full textShimi, Kamal. "Synthèse de nouveaux dérivés acridiniques à potentialités biologiques." Aix-Marseille 3, 2004. http://www.theses.fr/2004AIX30006.
Full textWe have developed the synthesis of new acridinic monomers and dimers. Moreover, the N-arylation of heterocyclic amines using organometalic reagents wearing boron or bismuth has been also developped to yield different acridinic polycycles. This work needs the synthesis of two key intermediates: the 3-acetamido-6-aminoacridine and the 4-aminoacridine. Thus, we obtained five new series of heterocyclic acridinic monomers, two new series of acridinic dimers and one range of biacridines. All these new compounds are currently in biological testing
Aboukhassib, Ahmed. "Hydroborates solides M2B10H10 et M2B12H12, étude spectroscopique et thermodynamique : dérivés d'association avec AlCl3." Lyon 1, 1991. http://www.theses.fr/1991LYO10150.
Full textArthur, Marie-Pierre. "Synthèse et réactivité de dérivés diazoiques et de nitrilimines alpha bores." Toulouse 3, 1992. http://www.theses.fr/1992TOU30082.
Full textVoisin-Chiret, Anne-Sophie. "Synthèse de nouveaux dérivés pyridiniques à visée cholinergique nicotinique." Caen, 2005. http://www.theses.fr/2005CAEN4066.
Full textThe present study describes, on the one hand, the synthesis, the physicochemical study and the biological evaluation of novel pyridylethers as potential nicotinic cholinergic receptor ligands. On the other hand, the Petasis reaction, a multicomponent reaction, is used in the pyridine series to synthesize novel complexes. In the first part, after a general review about nicotinic cholinergic receptors, their localization, their structure and their function as well as a description of different technologies used in parallel chemistry, the chemical study is developed. Various synthetic approaches to prepare pyridylethers were used, along with studies on stability and reactivity. A small but diverse chemical library was accomplished. The first biological results are reported. Further tests are currently under investigation. In the second part, after a general review about multicomponent reactions, the Petasis reaction was studied with an emphasis parallelization. The implementation of this reaction allowed us to obtain original compounds whose structure was investigated and determined as complex (1:1) of dioxaborolanone and an amine. The experimental part of this document describes the procedures and the physicochemical characteristics of the compounds presented. Finally, more than 270 bibliographical references replace this study in its chemical and biological context
Jolivet, Agnès. "Dérivés diacétyléniques du bore, du phosphore et de l'étain en chimie des matériaux : synthèse et comportement thermique." Montpellier 2, 1996. http://www.theses.fr/1996MON20233.
Full textCailly, Thomas. "Etude de l'ortholithiation de cyanopyridines : application à la synthèse de nouveaux azaphénanthrènes." Caen, 2006. http://www.theses.fr/2006CAEN4053.
Full textDevillard, Marc. "Dérivés ambiphiles : chimie de coordination d'un phosphine-alane, synthèse et réactivité de phosphine-boréniums." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/2647/.
Full textThis work deals with the chemistry of ambiphilic derivatives that combine a Lewis base and a Lewis acid of general formula PE (E = B, Al). The first chapter deals with the study of phosphine-borane and phosphine-borenium adducts in peri position on a naphthalene backbone. First, the influence of the naphthyl backbone and the substituents at boron on the PB donor-acceptor interaction was studied with different analytical methods. This system was then applied to the prepration of boreniums stabilized intramolecularly by the phosphorus. The Lewis acidity as well as the reactivity of such species toward small molecules were studied. The second chapter focuses on the coordination chemistry of a phosphine-alane ambiphilic ligand containing a Csp2 linker toward M-Cl bonds in transition metal fragments of groups 9 to 11. The gold chemistry has been studied particularly in detail as well as the capability of the resulting complexes to promote cycloisomerisation processes catalytically. The third chapter further explores the coordination chemistry of the phosphine-alane ligand and focuses on its ability to behave as a Z-type ligand. The propensity of the aluminum atom to accept electron density from the isoelectronic gold(I) and platinum(0) has been assessed by experimental and computational means. The influence of the organic co-ligand on the strength of the interaction was also investigated. Finally, the reactivity of the platinum complex toward dihydrogen has been studied
Bernard, Samuel. "Elaboration de fibres longues de nitrure de bore à partir d'un polyborazine : étude de la conversion polymère - céramique." Lyon 1, 2002. http://www.theses.fr/2002LYO10186.
Full textBurzicki, Grégory. "Synthèse de nouvelles oligopyridines potentielles mimes d’hélice alpha et perturbatrices des interactions protéine-protéine." Caen, 2010. http://www.theses.fr/2010CAEN4068.
Full textIn order to obtain new non-peptidic scaffolds as potential alpha helix mimetics, we developed a convergent and highly flexible synthesis of new oligopyridines variously substituted by using iterative Suzuki-Miyaura cross-coupling reactions in a regioselective strategy named Garlanding. The first part presents chemical library and screening concepts. We focus on the chemical space concept and the exploration of new chemical spaces in order to discover new drugs. This is in this approach that our research program takes place, and particularly concerning protein-protein interactions and the “BH3” mimetics able to interact with the proteins of the Bcl-2 family. The second one describes the personal work of the author on the synthesis of bi-, ter-, quater-, quinque- and sexipyridines variously substituted, particularly by methyl or styryl groups. The molecular modelling studies and the first biological results of the compounds are presented in this part. Then experimental procedure and physico-chemical characteristics of all synthezised compounds are described. Finally, 265 bibliographical references replace this study in both its chemical and biological context
Gendrineau, Thomas. "Les diènes chiraux monosubstitués : une nouvelle famille de ligands pour les réactions d'addition-1,4 asymétriques de dérivés du bore catalysées par le rhodium." Paris 6, 2009. http://www.theses.fr/2009PA066433.
Full textMalan, Christophe. "Synthèse de dérivés bores pour la boroneutrothérapie." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10124.
Full textMiqueu, Karinne. "Caractérisation par spectroscopie photoélectronique à rayonnement UV de dérivés à basse coordinence de l'arsenic et du bore, étude expérimentale et quantique de leur réactivité." Pau, 2000. http://www.theses.fr/2000PAUU3003.
Full textLeblond, Bertrand. "Préparation de fluorhydrines et d'époxydes fluorés à partir de la 2,2,6,6-tétrachlorocyclohexanone. Accès à des dérivés aromatiques fluorés." Rouen, 1991. http://www.theses.fr/1991ROUES012.
Full textGodou, Timothé. "Mimer la chimie des hydrosilanes et hydroboranes par l’activation catalytique de dérivés silylés et borés de l’acide formique." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS307/document.
Full textGlobal energy needs are mostly covered by the use of fossil fuels such as oil, coal or gas. The use of these fossil resources in the field of energy or the chemical industry causes a high accumulation of CO2 in the atmosphere and causes climatic disturbances. In addition to posing a major ecological problem, these fossil resources are not renewable and will pose a problem of availability in the long term. To overcome these difficulties, one possible solution is to limit or even stop the use of fossil resources in favor of renewable carbon sources such as CO2 or biomass. These resources could be used as a source of chemicals and / or storage of intermittent energies. These uses require the conversion of oxygenates with C=O (such as CO2) and C–O (such as biomass) and require energy input into reduction reactions. Few reducers are compatible with this use which requires the use of compounds both renewable and having a redox potential adapted to the reduction of C–O bonds. These are essentially dihydrogen and formic acid. In this context, this doctoral work aims to define and meet the specifications of a renewable reducer. In the first place, the use of silyl formates is explored, through reactions mimicking the behavior of hydrosilanes. This strategy is used in dehydrogenating coupling reactions and for the reduction of ketones by transfer hydrosilylation. Finally, this concept is transposed to transfer hydroboration with the use of boryl mono formate compounds and a catalyst involving a participative ligand. The boryl and silyl formates thus appear as attractive renewable reducers, which combine a source of renewable hydride (formic acid) with an oxophilic element of the main group whose stereo-electronic properties are easily adjustable
Jordana, Emmanuel. "Conception, réalisation et caractérisation de grilles en silicium polycristallin déposé amorphe à basse température et dopé bore in situ." Toulouse 3, 2005. http://www.theses.fr/2005TOU30091.
Full textDiab, Manal. "Couplage de polyoxométallates et de clusters Closo-decahydroborates : synthèses, caractérisations et propriétés." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLV018.
Full textDevelopment of a novel class of inorganic compounds by chemical combination between two types of clusters "Hydroborates" HYD and "polyoxometalates” POM has been investigated. Functionalization of polyoxometalates by closo-decaborates could create a synergy between these different types of clusters and optimize their properties, especially towards biological applications.The direct link between POM and HYD was unsuccessful due to their anionic characters, to solubility problems and to the stability dependence of POM according to pH. Another method was then used based on the grafting of linkers on POM and HYB. Hydroborate [B10H10]2-; was transformed to its carbonyl derivative [B10H9CO]- to react with differents families of POMs functionalized by tris-(hydroxymethyl)methylamine ligands in the case of the "MMo6" (with M: Al, Mn) Anderson-type POMs or by aminopropyltri(ethoxy)silane groups in the case of the vacant Keggin and Dawson-type derivatives"SiW10"and "P2W17", respectively. After establishing the experimental conditions allowing to synthestise the targeted covalently linked POM-Boron adducts, the later were fully characterized in the solid state and in solution. Elemental analysis supported by TGA, FT-IR spectroscopy, UV-VIS, MALDI-TOF, ESI-MS and various NMR technqiues evidenced the formation of mono or di-adducts compounds which were studied in electrochemistry to demonstrate the influence of the boron clusters grafted on the POM moieties. Finally DFT calculations performed for these systems gave structural models and energetic profiles allowing to understand the complexity of the synthesis of such systems.Another approach was also studied using supramolecular concept by extending the known cyclodextrin CD/POM and CD/closo-Borate interactions to synthesize ternary systems associating [B10H10]2- ,CD and POMs or metallic clusters. Solution studies were performed by ESI-MS and NMR which evidence the formation of 1:1 inclusion complexes between [B10H10]2- and CDs while only X-ray structure was obtained with α-CD and characterized in the solid state. DOSY NMR allowed us to access the association constants which appear relatively low with an optimal constant obtained with α-CD. ITC measurements confirmed these constants and gave the thermodynamic parameters associated to the formation of the inclusion complexes which notably evidence the chaotrope character of the [B10H10]2- cluster. Once again, DFT calculations brought important element proving that the inclusion compounds fomed with -CD is the most stable because of the good matching between the size of the boron cluster and the size of the cavity of the -CD. The results of ternary system are preliminary, and require further development and investigations. Details of synthesis and characterization will be presented in this manuscript
Chazalette, Céline. "Molécules organométalliques à propriétés biologiques : nouveaux inhibiteurs de l'anhydrase carbonique." Toulouse 3, 2002. http://www.theses.fr/2002TOU30012.
Full textCazorla, Clément. "Étude de la réactivité polyvalente des composés borés : de la fluoration électrophile à la synthèse d’amides par substitution nucléophile oxydante ; O-alkylation de dérivés phénoliques par substitution nucléophile : vers la mise au point d’un système éco-compatible." Thesis, Lyon 1, 2011. http://www.theses.fr/2011LYO10144/document.
Full textThis thesis describes the study of the reactivity of boron compounds and the O-alkylation of aromatic alcohols. The use of boronic derivatives increased considerably over the past decades. There are used as cross-coupling partners in the Suzuki reaction and for 1,4 rhodium-catalyzed addition reaction. The nucleophilic nature of these compounds was induced by the C-B bond polarization. This peculiar reactivity was studied for the C-F bond formation. The use of Selectfluor® as fluorinating agent leads to good yields. Nevertheless, the polarity of the C-B bond could be reversed by oxidative nucleophilic substitution. Thus, C–N bond could be formed from nitriles and potassium trifluoroborate salts promoted by Cu(OAc)2 in the presence of BF3.OEt2. Due to the importance of ether chemistry in organic synthesis, the O-alkylation of phenol derivatives was achieved in the laboratory. From a stoichiometric amount of Lewis acid, BF3.OEt2, a catalytic system was developed involving cerium triflate. Then, the focus on green chemistry led to use a heterogeneous catalyst. Where Nafion® NR50 appears as a suitable catalyst for the ether synthesis
Zimmer, Lucie. "Synthèse diastéréosélective et énantiosélective de dérivés cyclopropaniques 1,2,3-substitués à l’aide de carbénoïdes gem-dizinciques." Thèse, 2009. http://hdl.handle.net/1866/3913.
Full text1,2,3-Substituted cyclopropanes are useful compounds present in several chemical domains. This thesis considers both the diastereo- and enantioselective synthesis of these compounds, particularly focusing on zincocyclopropanation methodologies. This method relies on a gem-diorganozinc carbenoid undergoing a Simmons-Smith type cyclopropanation. This method is advantageous due to its diastereoselectivity, forming the cyclopropylzinc adduct, where the zinc atom is cis relative to the directing group involved in the cyclopropanation. In this reaction, the existence of a competitive pathway involving a monoorganozinc reagent dramatically decreased the efficiency of the zincocyclopropanation. Reactivity studies, and screening of numerous conditions for the formation of the carbenoids highlighted the crucial parameters favouring the zincocyclopropanation reaction. This work demonstrated that the outcome of the reaction strongly depends on the nature of the carbenoid used, the temperature, and the presence of ZnI2 in the reaction mixture. Due to these findings, zincocyclopropanation was extended to allylic alcohols bearing one directing group only (i.e. not derived from 1,4-butenediol). As predicted, under these optimized conditions the zincocyclopropanation was highly cis-diastereoselective. To functionalize these cyclopropylzinc reagents many in situ functionalization reactions were developed. All these methods demonstrated total retention of the diastereoselectivity, and as such, the versatility of zincocyclopropanation for the synthesis of 1,2,3-susbtituted cyclopropanes is demonstrated. With a diastereoselective method in hand for the synthesis of 1,2,3-substituted cyclopropanes, we explored the development of an enantioselective version for this reaction. The use of a dioxaborolane-based ligand allowed the zincocyclopropanation of various allylic alcohols with high enantioselectivity. The presence of a nucleophilic C-Zn bond and an electrophilic boron center within the same molecule led to an in situ zinc-boron exchange and the formation of a cyclopropylborinate. This intramolecular zinc to boron exchange is responsible of the perfect diastereoselectivity of the reaction. These cyclopropylborinates were submitted to a Suzuki cross-coupling reaction leading to various 1,2,3-substituted cyclopropane with high enantioselectivities and excellent diastereoselectivities. These cyclopropylborinates are versatile intermediates as other functionalization reactions have been developed for these compounds.