Дисертації з теми "Synthèse des vues nouvelles"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "Synthèse des vues nouvelles".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Blanc, Jérôme. "Synthèse de nouvelles vues d'une scène 3D à partir d'images existantes." Phd thesis, Grenoble INPG, 1998. http://tel.archives-ouvertes.fr/tel-00004870.
Повний текст джерелаAbad, Frédéric. "Contributions à la synthèse de nouvelles vues à partir de photographies." Nice, 2003. http://www.theses.fr/2003NICE4008.
Повний текст джерелаWe were interested in the synthesis of realistic novel views of a scene described by a limited number of photographs. This lead us to design a complete and genuine processing pipeline. This pipeline is based on a rendering engine applying the 'view-dependent texture mapping' technique to a simple geometric representation of a scene decomposed into layers. The realism of the generated images is consequently optimal despite the simplicity of the input data. We also studied the correction of some rendering errors caused by texture mapping and we suggested a geometrically valid procedure to correct the so-called 'ghosting artefacts'. Finally we investigated the automatic estimation of the binary masks associated with the 3D layers of the scene and we designed a new segmentation approach using 'graph-cuts' and, among others, a particular geometric knowledge (planar-key)
Bats, Nicolas. "Synthèse de nouvelles zéolithes en vue d'applications en déparaffinage." Mulhouse, 2004. http://www.theses.fr/2004MULH0778.
Повний текст джерелаFülöp-Balogh, Beatrix-Emőke. "Acquisition multi-vues et rendu de scènes animées." Thesis, Lyon, 2021. http://www.theses.fr/2021LYSE1308.
Повний текст джерелаRecent technological breakthroughs have led to an abundance of consumer friendly video recording devices. Nowadays new smart phone models, for instance, are equipped not only with multiple cameras, but also depth sensors. This means that any event can easily be captured by several different devices and technologies at the same time, and it raises questions about how one can process the data in order to render a meaningful 3D scene. Most current solutions focus on static scenes only, LiDar scanners produce extremely accurate depth maps, and multi-view stereo algorithms can reconstruct a scene in 3D based on a handful of images. However, these ideas are not directly applicable in case of dynamic scenes. Depth sensors trade accuracy for speed, or vice versa, and color image based methods suffer from temporal inconsistencies or are too computationally demanding. In this thesis we aim to provide consumer friendly solutions to fuse multiple, possibly heterogeneous, technologies to reconstruct and render 3D dynamic scenes. Firstly, we introduce an algorithm that corrects distortions produced by small motions in time-of-flight acquisitions and outputs a corrected animated sequence. We do so by combining a slow but high-resolution time-of-flight LiDAR system and a fast but low-resolution consumer depth sensor. We cast the problem as a curve-to-volume registration, by seeing the LiDAR point cloud as a curve in the 4-dimensional spacetime and the captured low-resolution depth video as a 4-dimensional spacetime volume. We then advect the details of the high-resolution point cloud to the depth video using its optical flow. Second, we tackle the case of the reconstruction and rendering of dynamic scenes captured by multiple RGB cameras. In casual settings, the two problems are hard to merge: structure from motion (SfM) produces spatio-temporally unstable and sparse point clouds, while the rendering algorithms that rely on the reconstruction need to produce temporally consistent videos. To ease the challenge, we consider the two steps together. First, for SfM, we recover stable camera poses, then we defer the requirement for temporally-consistent points across the scene and reconstruct only a sparse point cloud per timestep that is noisy in space-time. Second, for rendering, we present a variational diffusion formulation on depths and colors that lets us robustly cope with the noise by enforcing spatio-temporal consistency via per-pixel reprojection weights derived from the input views. Overall, our work contributes to the understanding of the acquisition and rendering of casually captured dynamic scenes
Latouche, Céline. "Synthèse de nouvelles métalloporphyrines fonctionnelles en vue d'une application en radioimmunothérapie." Bordeaux 1, 1995. http://www.theses.fr/1995BOR10510.
Повний текст джерелаAatif, Abdeljalil. "Nouvelles synthèses de phénylethanolamines polycycliques en vue d'applications pharmacologiques." Nancy 1, 1990. http://www.theses.fr/1990NAN10001.
Повний текст джерелаIvaldi, William. "Synthèse de vue frontale et modélisation 3D de visages par vision multi-caméras." Paris 6, 2007. http://www.theses.fr/2007PA066221.
Повний текст джерелаThe purpose of this thesis prepared with SAGEM Sécurité, worldwide biometry leader, is to study a real-time system of facial reconstruction for a face recognition application. The algorithm must generate a frontal view of an unknown face, without constraint when walking behind the 4 video cameras. After testing a classic stereovision approach, we evaluate the well know AAM models but their deformation mode doesn't give any acceptable convergence on unknown faces. We then define an original 3D Radial Model by hemispheric projection of 3D face scans to get deformation modes adapted to the constraints. After the 3D radial model is ajusted, the frontal view is obtained by fusion of the 4 source images using a visibility rule applied at every position of the model surface. This virtual view is computed from a frontal point of view depending of the 'face' normal of the model. The virtual view synthesis is performed in real time using the graphic card GPU ressources
Taillemite, Sébastien. "Synthèse de nouvelles dyades C60-donneur en vue de leur utilisation comme matériaux de conversion photovoltaïque." Paris 6, 2004. http://www.theses.fr/2004PA066311.
Повний текст джерелаGaud, Olivier. "Synthèse et analyse structurale de nouvelles méso-arylporphyrines glycosylées en vue de l'application en photothérapie des cancers." Limoges, 1995. http://www.theses.fr/1995LIMO0040.
Повний текст джерелаChaleix, Vincent. "Synthèse et caractérisation de nouvelles porphyrines glucolysées peptidiques à motif RGD en vue de leur application en photothérapie dynamique." Limoges, 2003. http://aurore.unilim.fr/theses/nxfile/default/5087682f-d38e-4c8b-b7f0-076ca0d07983/blobholder:0/2003LIMO0047.pdf.
Повний текст джерелаThe use of porphyrins and analogues as photosensitisers together with visible light is a new treatment of tumors (photodynamic therapy, PDT). Carbohydrate-substituted porphyrins are in this domain very promising compounds. In addition, it is known that endothelial cells of the neovascularisation in tumors express avb3 integrin. Extracellular domains of this transmembrane glycoprotein are able to bind components of the extracellular matrix (ECM) and more precisely the sequence Arg-Gly-Asp. With the aim of their utilization in photodynamic therapy of cancers, we describe the synthesis and characterization (UV-Visible, mass, NMR) of new glucosylated porphyrins bearing the RGD moiety. The first synthetised compounds were derived from tritolyl and triglucosylarylporphyrins where the peptidic moiety is linked to the phenyl group by a spacer arm by means of a solid phase reaction. . The second series consists of glucosylated porphyrin derivatives bearing a cyclical unsaturated pentapeptide including RGD sequence, obtained by ring closing metathesis in solid phase. We have also synthesized a dimer in which the two glucosylated porphyrins are linked by the RGD sequence. These compounds produced 1O2 and photocytotoxicities against K562 leukemia cell line were favourably compared to Photofrin II®. Due to their sensitising abilities, these compounds are of considerable interest for photodynamic therapy
Delamare, Madeleine. "Nouvelles voies de synthèse d'hétérocycles polyazanaphtalènes en vue de leur application en pharmacie, en agro-industrie et en phytochimie." Rouen, 1998. http://www.theses.fr/1998ROUES024.
Повний текст джерелаRolin, Pierre. "Synthèse de vues pour l’initialisation de pose." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0025/document.
Повний текст джерелаLocalisation is a central problem of computer vision which has numerous applications such as robotics or augmented reality. In this thesis we consider the problem of pose initialisation, which is pose computation without prior knowledge on the camera position. We are interested in pose computation from a single image and a point cloud that has been reconstructed from a set of images. As we do not have prior knowledge on the camera position, pose estimation entirely rely on finding correspondences between the image and the model. The search for these correspondences is a difficult problem because of its high combinatorial complexity. It can fail if the image is very different from the ones we used to construct the model, in particular when there is a large viewpoint change between them. This thesis proposes an approach to make matching possible in such difficult scenarios. It consists in synthesising locally the appearance of the scene from virtual viewpoints and add descriptors extracted from these synthetic views to the model. Because the scene model is a point cloud, the synthesis is not a 3D rendering but a local 2D transform of existing observations of the scene. The following contributions have been proposed. We study different transform models and show that homographic transformations are the best suited for this application. We define a method to position the virtual viewpoints with respect to a planar segmentation of the scene model. We ensure time efficiency by only synthesising useful views, i.e. views that are far from the existing one and don't overlap. Furthermore we verify that the synthesized surface is visible from the virtual viewpoint to avoid producing aberrant views due to occlusions. Finally, we propose a robust and time efficient method to research image-model correspondences. It uses geometric cues in a guided matching framework to efficiently identify sets of correct correspondences. Experimental results show that the proposed approach makes possible pose computation in situation where standard methods fail. In general the precision and repeatability of computed poses is significantly improved by the use of view synthesis. We also show that it also reduce the pose computation times by making image-model matching easier
Tardif, Dominic. "Conception d'un système de synthèse orienté-objet multiplateforme en vue d'une nouvelle méthode de synthèse." Mémoire, Université de Sherbrooke, 2011. http://savoirs.usherbrooke.ca/handle/11143/1594.
Повний текст джерелаSicard, Pascal. "Nouvelles méthodes de synthèse logique." Phd thesis, Grenoble INPG, 1988. http://tel.archives-ouvertes.fr/tel-00327269.
Повний текст джерелаPicq, Dominique. "Nouvelles méthodes de synthèse d'aminoglycopyranosides." Lyon 1, 1985. http://www.theses.fr/1985LYO10005.
Повний текст джерелаKhaldi, Mustapha. "Nouvelles stratégies de synthèse d'alcaloïdes antitumoraux." Nancy 1, 1994. http://docnum.univ-lorraine.fr/public/SCD_T_1994_0226_KHALDI.pdf.
Повний текст джерелаBardon, Geneviève. "Synthèse et caractérisation de nouvelles polyphénylquinoxalines." Lyon 1, 1989. http://www.theses.fr/1989LYO10083.
Повний текст джерелаSenni, Djennane. "Synthèse et réactivité de bromoglycosylimines nouvelles." Lyon 1, 1995. http://www.theses.fr/1995LYO10181.
Повний текст джерелаBert, Julien. "Synthèse de vues à partir d'images de microscopes photoniques pour la micromanipulation." Phd thesis, Besançon, 2007. http://tel.archives-ouvertes.fr/tel-00195867.
Повний текст джерелаZhang, Wei. "Nouvelles stratégies de synthèse des nanocarbones fluorés." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2009. http://tel.archives-ouvertes.fr/tel-00725236.
Повний текст джерелаLandelle, Grégory. "Nouvelles voies de synthèse stéréosélectives de monofluoroalcènes." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28412/28412.pdf.
Повний текст джерелаNedonchelle, Agnès. "Synthèse énantiospécifique et activité de nouvelles anthracyclines." Paris 5, 1988. http://www.theses.fr/1988PA05P603.
Повний текст джерелаWeber, Jean-Victor. "Nouvelles réactions d'oxydoréduction polyphasiques en synthèse organique." Metz, 1986. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1986/Weber.Jean_Victor.SMZ8626.pdf.
Повний текст джерелаSupported reactifs present some advantages in organic synthesis : simplification of experimental procedures, use of common solvents, regeneration and reuse of support. The first goal of this work was the exploration of some new reactions using exchange resins. For classical functionel transformations or for sulfides and selenides preparations. Thus, we have realized : the hydrogenolysis of primary halides by a borohydrure resin. In the second part of this work, we extend the study of oxydatite properties of chlorite and hypochlorite salts. Thus we have found chemoselective conditions for the oxydation sulfide, sulfoxide using factorial design. We propose an previsionnal method for chemical shift determination in NMR 13C of sulfide, sulfone, sulfoxyde and selenide
Bruyère, Hélène. "Nouvelles approches dans la synthèse totale d'éleuthésides." Paris 5, 2005. http://www.theses.fr/2005PA05P603.
Повний текст джерелаEleutherobin and sarcodictyins A and B, from eleuthesides family, are marine diterpenic compounds and very interesting since they are cytotoxic and have an activity similar to that of Taxol® and Taxotere®. They promote the polymerization of tubuline. Our retrosynthetic approach involves two key steps: the diastereoselective substitution of the 5-methyl-4-(pyrrolidin-1-yl)-furan-2(5H)-one and an intramolecular Diels-Alder cycloaddition. The difficulty of this synthesis is mainly the respect of the stereochemistry. We first studied the substitution on carbonyl compounds in order to develop the diastereoselective and enantioselective synthesis of 5-(1’-hydroxyalkyl)-5-methylfuran-2(5H)-ones. Acylation followed by reduction gave only the syn product, which is the desired product, with very good yields. Then we studied the introduction of the diene moiety, protected as a sulfolene. We prepared the convenient acyl chloride and performed the acylation/reduction sequence with good yields and diastereoselectivity. Deprotection of the diene and introduction of the dienophile on the hydroxyl group allowed us to do the intramolecular Diels-Alder cycloaddition
Meynier, Franck. "Nouvelles applications des oxazolidines en synthèse asymétrique." Paris 6, 1987. http://www.theses.fr/1987PA066078.
Повний текст джерелаRabiller, Christine. "Nouvelles voies de synthèse de lactones bioactives." Nancy 1, 1994. http://www.theses.fr/1994NAN10339.
Повний текст джерелаBillard, Luc. "Nouvelles méthodes de synthèse d'analogues de nucléosides." Limoges, 2001. http://www.theses.fr/2001LIMO0045.
Повний текст джерелаThe aim of this work is to report new methods of synthesis of nucleoside analogs. .
Rochin, Christophe. "Nouvelles utilisations du méthyltrichlorosilane en synthèse organique." Bordeaux 1, 1985. http://www.theses.fr/1985BOR10634.
Повний текст джерелаHammaecher, Catherine. "Acylsilanes et Bis(acyl)silanes : nouvelles méthodologies de synthèse et nouvelles réactivités." Reims, 2007. http://theses.univ-reims.fr/exl-doc/GED00000726.pdf.
Повний текст джерелаAcylsilanes are «acyl-metal» compounds having the most varied chemistry. This PhD concerns, on the one hand, new synthesis (methods and products) of acylsilanes, on the other hand the study of their reactivity. A method of synthesis based on the hydrolysis of C-silyl enol or enethiol ethers proved to be inappropriate for the preparation of bis(acylsilanes), but provided an original contribution to the array of the acylsilanes synthetic methods. The synthesis of allyl- and vinyl(acyl)silanes and allyl- and vinyl(aroyl)silanes was performed from two types of precusors. Allyl- and vinyl(benzoyl)silanes were prepared by a sequence of silylation/dithioketalisation of 2-phenyl-[1,3]-dithiane and the methodology was extended to aliphatic allyl(acyl)silanes. A sequence silylation/alkylation applied to 1-phenoxyméthyl-1Hbenzotriazole led to allyl- and vinyl(acyl)silanes bearing a long alkyl chain in satisfactory yields. Allyl- and vinyl(acyl)silanes proved to have a poor reactivity in metathesis whatever the Grubbs catalyst used. However ring closing metathesis applied to bis(unsaturated) benzotriazole derivatives led to cyclic intermediates in very good yields. Cross-metathesis applied to an allysilane derived from benzotriazole led, after deprotection, to the expected bis(acylsilane). Allyl(dimethyl)(acyl)silanes exhibited an unexpected reactivity compared with the usual reactivity of acyl(trialkyl)silanes. UV irradiation of allyl(acyl)silanes gave 1-alkyl-2,2-diméthyl-6-oxa-2-sila-bicyclo[2. 2. 0]hexanes, a new type of bicyclic structure, by a totally regioselective intramolecular Paternò-Büchi reaction
Akhloufi, Moulay Abdellatif. "Synthèse de vues à partir d'images prises par des caméras stéréoscopiques non calibrées." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0007/MQ42893.pdf.
Повний текст джерелаGouet-Brunet, Valérie. "Mise en correspondance d'images en couleur : Application à la synthèse de vues intermédiaires." Montpellier 2, 2000. http://www.theses.fr/2000MON20120.
Повний текст джерелаMOLINA, ADELINE. "Recherche de nouvelles methodes d'obtention de c-glycosides en vue de la synthese des ezomycines." Paris 6, 1997. http://www.theses.fr/1997PA066139.
Повний текст джерелаTomakinian, Terry. "Nouvelles méthodes de synthèse de benzofuroindolines. Vers la synthèse de la phalarine." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS031.
Повний текст джерелаBenzofuroindolines are a family of compounds which can be found in two regioisomeric forms: benzofuro[2,3-b]indolines or benzofuro[3,2-b]indolines. This core is present in several natural products such as bipleiophylline, voacalgine A, diazonamide A or phalarine which have been the subject of intensive efforts towards their syntheses. The postulated biogenesis is the oxidative coupling of an indole and a phenol. We developed four pathways to access these structures using the indole nucleus.The first part consisted in a direct oxidative coupling between a N-acetylindole and a phenol in presence of FeCl₃ and DDQ. This strategy showed its generality on N-acetylindoles derivatives to form in only one step the benzofuro[3,2-b]indoline core. In some cases, the benzofuro[2,3-b]indoline is obtained if the substitution in the C-2 and C-3 position is the same. In order to synthesize the phalarine, the unique natural product to possess a benzofuro[3,2-b]indoline core, we designed a C-2 arylation of an indole with a phenol using a palladium-catalyzed coupling. The cyclization steps using NIS led to the benzofuro[3,2-b]indoline core. The insertion of the missing carbon of one of the rings is under study by adding a nucleophile which contains only one carbon and a leaving group. The last strategy to access to benzofuro[3,2-b]indolines has been focused on an interrupted Fischer indolization. The reaction between benzofuran-3-ones and arylhydrazines in acidic conditions led to the desired benzofuro[3,2-b]indolines. This methodology is general and robust. Another part of the project was to achieve the Umpolung of the indole to add nucleophiles in C-3 position of the indole nucleus. N-hydroxyindoles were synthesized and the use of biaryliodonium triflate salts allowed an O-arylation reaction. The product being unstable, a [3,3] sigmatropic rearrangement can take place to afford the desired benzofuro[2,3-b]indolines
Robert, Nicolas. "Etude de nouvelles voies d'accès aux squelettes cycloalkyl[b] et [c]pyridines par valorisation de nouvelles méthodes de fonctionnalisation en série halogénonicotinique." INSA de Rouen, 2006. http://www.theses.fr/2006ISAM0017.
Повний текст джерелаMiel, Hugues. "Synthèse de nouvelles guanidines et imidazolines à visée thérapeutique." Caen, 1998. http://www.theses.fr/1998CAEN4074.
Повний текст джерелаBertail, Caroline. "Nouvelles voies de synthèse de nanoparticules d'oxydes luminescents." Phd thesis, Ecole Polytechnique X, 2008. http://pastel.archives-ouvertes.fr/pastel-00003730.
Повний текст джерелаCargoët, Marine. "Nouvelles méthodologies pour la synthèse totale de protéines." Thesis, Lille 2, 2017. http://www.theses.fr/2017LIL2S025/document.
Повний текст джерелаProteins play a crucial role in living organisms and in almost all biological mechanisms. The total chemical synthesis of proteins allows an atom by atom control of their structure and thus constitutes a powerful tool of investigation of biological processes involving these molecules. The solid phase peptide synthesis (SPPS) introduced by B. Merrifield in 1963 has revolutionized the field. Few years later, the discovery of chemical ligation methods and the development of peptide segment assembling strategies has been applied to the synthesis of many proteins. However, the difficulty in accessing large proteins reflects the absence of robust methods for the routine synthesis of such macromolecules.Novel synthetic methods based on Native Chemical Ligation and SEA/SeEA ligations have been developed in the frame of this thesis. In particular, I explored the interest of latent or in situ formed selenesters for facilitating the access to large proteins.The first part of this thesis describes the chemical properties of the bis(2-selenylethyl)amido (SeEA) group, i.e. the selenium analog of the bis(2-sulfanylethyl)amido (SEA) group, and its usefulness for accelerating peptide bond formation. This method was used for the synthesis of the NK1 protein (natural variant of the hepatocyte growth factor, HGF) constituted of 180 amino acids.The second part describes the in situ formation of selenesters through the design of novel selenium catalysts. These catalysts were used to accelerate the SEA ligation as well as the synthesis of thioester peptides from SEA peptides. Both reactions are central in the total synthesis processes developed in this thesis. Their usefulness is illustrated by the total synthesis of granulysin.The last part describes a method for the sequential ligation of peptide segments on a water compatible solid support which is complementary to the solution methods discussed above. This process has been automated and has a great potential for the automated chemical synthesis of proteins
Honraedt, Aurélien. "Nouvelles approches de synthèse du tert-butane sulfinamide." Toulouse 3, 2011. http://www.theses.fr/2011TOU30304.
Повний текст джерелаCreation of chiral sp3 carbon centre is a fundamental issue in modern organic chemistry, especially to synthesize biologically active molecules. Among the different known methods, the use of tert-butyl sulfinamide as a chiral auxilliary had shown excellent results, in particular for the synthesis of chiral amines such as amino acids. Despite of the large description of examples using this auxilliary, few methods of synthesis of this compound are described. Moreover, these pathways use expensive starting materials and produce undesirable secondary compounds. We developed with our industrial partner a new pathway for the synthesis of tert-butyl sulfinamide. First we concentrate our efforts to optimize known methods from the literature. The intermediate chloro-sulfinyl compounds are generally unstable and the conditions of reaction are rather difficult to implement. So we developed in a second time a new methodology using phthalimide skeleton as a stabilizing group in tert-butyl sulfur compounds. The synthesized products are very stable, obtained with good yields, and easily purified. This methodology permits us to obtain the tert-butyl sulfinamide in this racemic and enantiopur forms
Fourgeaud, Pierre. "Synthèse et réactivité de nouvelles familles d'hétérocycles phosphorés." Montpellier 2, 2007. http://www.theses.fr/2007MON20250.
Повний текст джерелаPhosphorus molecules, due to their key roles in biochemistry and wide chemical diversity, are intensively studied because of their potential biological activities. Those research led to the commercial use of phosphorus molecules in the field of medicine and agrochemistry. We synthesized five and six membered rings using ring closing metathesis and to avoid some drawbacks of such a method, we used allenic compounds with nucleophilic or electrophilic compounds. We managed to synthesize new heterocycles and we set up a new chain of reactions. Finally, we introduced molecular diversity on the previously synthesized heterocyles using pallado-catalysed arylation, hydroxyl- and aminoalkylation reactions using parallel synthesis. Five families of heterocycles were obtained and more than eigthty compounds were submitted to biological evaluatin in the agrochemistry field
Benoit, Roland. "Nanoparticules de bismuth : synthèse, caractérisation et nouvelles propriétés." Orléans, 2005. http://www.theses.fr/2005ORLE2082.
Повний текст джерелаBraga, Rémi. "Nouvelles aldolases : mécanismes d'action, synthèse d'effecteurs et applications." Toulouse 3, 2003. http://www.theses.fr/2003TOU30206.
Повний текст джерелаFolch, Benjamin. "Nouvelles voies de synthèse de nano-objets magnétiques." Montpellier 2, 2006. http://www.theses.fr/2006MON20166.
Повний текст джерелаThe aims of this work were the synthesis of magnetic nano-object, the control of their size and their shape and their organization in space. The control of the shape and the organization will be followed by magnetic studies. We choose to use original precursors from coordination chemistry. In the first part of the manuscript, we’ll see the synthesis of coordination-polymers Prussian Blue-like nanoparticles, Mx[M’(CN)n]y, stabilized by two porous matrixes, one inorganic, mesoporous silica, and one organic, chitosan. In the second part, we’ll present a new approach toward the synthesis of bimetallic and metallic oxides nanoparticles from precursors prepared by coordination chemistry. We’ll describe the synthesis of bimetallic, NiFe, and manganese oxide, Mn3O4, nanoparticles
Liéby-Muller, Frédéric. "Nouvelles réactions domino multicomposés : synthèse de polyhétérocycles azotés." Aix-Marseille 3, 2006. http://www.theses.fr/2006AIX30049.
Повний текст джерелаThe purpose of this work was to study new multicomponent reactions initiated by a Michael addition, from 1,3-dicarbonyl compounds, Michael acceptors and primary functionalised amines. Molecular sieves were used as heterogeneous catalyst of Michael addition and dehydrating agent. Our aim was to prepare selectively new polyfunctionalised heterocycles as molecular useful scaffolds in pharmaceutical industry. Thus, by using of different primary amines, we developed new access to hydronaphthyridine, azabicyclo[3. 3. 1]nonanone and benzimidazole skeletons. The general scheme of this synthesis has been extended to the creation of a C-C bond by trapping intermediate iminiums, through a Pictet-Spengler reaction. We also described the first multicomponent reaction from β-ketoamides, leading to original scaffolds having a highly functionalised 2,6-diazabicyclo[2. 2. 2]octane core. Polyfunctionalised mono- and polycyclic pyridines were obtained by introducing ammonium acetate instead of primary amines. Finally, in order to value synthesised molecules, we studied their reactivity and made biological tests in collaboration with Pierre-Fabre Urology
Terrasson, Vincent. "Nouvelles diamines vicinales : synthèse, complexation et activité catalytique." Versailles-St Quentin en Yvelines, 2008. http://www.theses.fr/2008VERS0020.
Повний текст джерелаThe manuscript is dealing with the preparation of new vicinal diamines and the study of their catalytic activity. The preparation of methylamines substituted by various heterocycles is described in the first part. Several complementary pathways have been explored. The major point, in the second part, is the introduction of boron clusters, namely carboranes, as substituents of the methylamine moiety. The preparation of such novel molecules required the development of new reactions in this series. Complexation reactions were next studied. Several stable palladium(II) complexes have been prepared, isolated and fully characterized by X-ray analysis. The last part of this document is devoted to the catalytic activity of the aforementioned complexes. First results in Suzuki-Miyaura type reactions, show that methylamin- based catalytic systems represent a good compromise between overall catalytic activity (yields, loadings), ease of preparation and stability of both ligands and complexes
Pieters, Grégory. "Synthèse et propriétés de nouvelles architectures moléculaires hélicoïdales." Versailles-St Quentin en Yvelines, 2010. http://www.theses.fr/2010VERS0059.
Повний текст джерелаThis work is dealing with the synthesis and properties of new helical molecular architectures. The first part is dedicated to the synthesis of a new molecular platform based on diarylnaphthalene compounds and their use as key starting material new polysubstituted molecules such as 6,11-diamino-[6]-helicenes and cyclooctahelicenes have been elaborated using a short and facile reaction sequence;. In the second part the study aims to control the aromatic electrohpilic subtitution key step. In this context, starting from binaphthyl or terphenyl patterns, we were able to selectively control the outcome of the reaction and obtain planar or helical architectures. Finally, novel architectures have been obtain by mixing some of these molecules with valuable boron cluster derivatives. In addition to the synthesis, physical properties of these new architectures have been studied (crystal packing, conformation in solution…) and theorical calculations investigated in order to explain some of the observed selectivities and to determine racemization barriers
Nyffenegger, Coralie. "Synthèse de tricycles énergétiques : nouvelles structures azahétérocycliques condensées." Orléans, 2008. http://www.theses.fr/2008ORLE2033.
Повний текст джерелаChatel, Florence. "Synthèse et étude conformationnelle de nouvelles phénothiazines tetracycliques." Aix-Marseille 3, 1998. http://www.theses.fr/1998AIX30044.
Повний текст джерелаCassayre, Jérôme. "Nouvelles réactions radicalaires appliquées a la synthèse d'alcaloïdes." Palaiseau, Ecole polytechnique, 1999. http://www.theses.fr/1999EPXX0025.
Повний текст джерелаDe, Nicola Antoinette. "Préparation et nouvelles utilisations en synthèse d'amidures encombrés." Grenoble 1, 1993. http://www.theses.fr/1993GRE10118.
Повний текст джерелаPándy-Szekeres, István Dávid. "Nouvelles synthèses par voie organosilicique." Bordeaux 1, 1985. http://www.theses.fr/1985BOR10596.
Повний текст джерела