Dissertations / Theses on the topic 'Éther vinylique'
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Guigné, Claire de. "Réactions d'éthers de diénol pour l'accès à des structures terpéniques : condensation carbocationique et métallation vinylique." Rouen, 1997. http://www.theses.fr/1997ROUES034.
Full textTayouo, Russell. "Synthèse et Caratérisations de nouvelles membranes fluorées porteuses de groupements acide phosphonique pour une application en pile à combustible." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2009. http://tel.archives-ouvertes.fr/tel-00447698.
Full textLecouve, Jean-Pierre. "Organométalliques vinyliques à fonction carbonylée masquée : application à la synthèse du rétinal." Rouen, 1986. http://www.theses.fr/1986ROUES016.
Full textIftene, Fadela. "Nouveaux monomères et (co)polymères éthers vinyliques phosphonés." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2012. http://www.theses.fr/2012ENCM0006/document.
Full textThe aim of this work is the synthesis of new vinyl ethers monomers bearing phosphonate groups, in order to study their efficiency as flame retardants. Phosphorus products are known to be a good alternative to halogenated flame retardants, which are involved in environmental problems. Initially, the synthesis of phosphonated vinyl ethers was performed by trans-etherification of ethylvinyl ether in the presence of phosphonated alcohols. Then, the radical copolymerization (A/D) was used to prepare copolymers based on phosphonated vinyl ether and various electron-accepting monomers. Kinetic studies by real-time Infrared and several methods of analyzes were used to characterize these copolymers. In a second step, the radical photocopolymerization of 2-dimethylvinyloxyethylphosphonate was led with a series of electron-accepting monomers, for instance maleimides which form strong complexes with vinyl ethers. The cationic photopolymerization of these phosphonated vinyl ethers is also possible and affords better results than radical photopolymerization. An assessment of all phosphonated polymers was performed in order to test their performances as flame retardants. Thermogravimetric and microcalorimetric characterizations showed good amount of released residues showing that these copolymers are good candidates as flame retardants
Beaune, Olivia. "Préparation de copolymères maléides-éthers vinyliques en série fluorée." Montpellier 2, 1991. http://www.theses.fr/1991MON20187.
Full textMorel, Florence. "Etude cinétique de la polymérisation photoamorcée d'éthers vinyliques." Mulhouse, 1998. http://www.theses.fr/1998MULH0546.
Full textCabianca, Elena. "Ethylenes 1,2-bis-thiofonctionnels : étude de réactivité comme accepteurs de Michael." Orléans, 2004. http://www.theses.fr/2004ORLE2058.
Full textDayoub, Wissam. "Réactivité de rhodiocarbénoi͏̈des issus d'[alpha]-diazo-[beta]-cétophosphonates et d'[alpha] -diazo-[beta]-cétosulfones : synthèse d'éthers d'allyle et de vinyle et de [delta]-lactones, cyclopentén-2-ones ou 3-oxofuranones fonctionnalisées." Lyon 1, 2003. http://www.theses.fr/2003LYO10018.
Full textArboré, Amélie. "Hétérocycloadditions [4+2] asymétriques de N-sulfinylimines et de sulfinylméthyloxadiènes en solution et sur support solide." Le Mans, 2004. http://cyberdoc.univ-lemans.fr/theses/2004/2004LEMA1027.pdf.
Full textThis work is divided in two main parts which both deal with the use of sulfoxides as chiral auxiliaries in [4+2] heterocycloaddition reactions. The first part is devoted to the synthesis of N-sulfinylimines and their reactivity in normal electron demand heterocycloaddition. One of these compounds, the ethyl (Ss)-(+)-(ptoluenesulfinyl)iminoacetate, proved to be an excellent dienophile towards cyclopentadiene. The cycloaddition occured without a catalyst at room temperature, with a high exo selectivity and a significant facial induction. More over, this reaction led to a nitrogen bicyclic adduct of valuable structure. The work described in the second part has contributed to the development of the synthetic potential of 2-sulfinylmethyloxadienes in organic synthesis, in studying their reactivity as new chiral heterodienes in inverse electron demand [4+2] heterocycloadditions. Indeed, these compounds displayed a good reactivity towards various vinyl ethers and sulfides under Zn12 catalysis, leading to original dihydropyranic adducts in proper yields, with high endo selectivity and satisfactory facial diastereoselectivity. Then, functional modifications of the adducts, via a [2,3]-sigmatropic rearrangement key-step, provided efficient access to diastereopure 2,3-dideoxy-3 -alkyl-glycosides. Furthermore, this methodology was successfully adapted to solid phase conditions by the use of an original supported vinyl ether. Other heterodienes, such as 3,y-ethylenic aketoesters, were also used with good results and, finally, this study clearly showed the posibility to generate structural and functional diversity
Héroguez, Valérie. "Polymérisation cationique vivante des éthers vinyliques chloro alkyles : applications à la synthèse de précurseurs de réseaux à propriétés spécifiques." Bordeaux 1, 1989. http://www.theses.fr/1989BOR10554.
Full textLucchesi, Céline. "Elaboration de supports polystyrène insolubles à fonctionnalité azlactone et applications en synthèse organique supportée." Le Mans, 2007. http://cyberdoc.univ-lemans.fr/theses/2007/2007LEMA1019.pdf.
Full textThis work deals with the elaboration of azlactone-functionalized insoluble supports by suspension polymerization. The methodology of designs of experiments (DoE) enables to control each parameter of this system. The azlactone functionality was also included into polyHIPE (High Internal Phase Emulsion). These supports were then used is solid-phase organic synthesis. [4+2] and [3+2] heterocycloadditions were performed with a supported vinyl ether, which was used as a dienophile and dipolarophile. The recycling of the support was achieved by palladium-catalysed direct O-vinylation of the residual alcohol functionality. Organocatalysed Mannich reaction was also studied through the immobilization of the aniline component onto the support. This strategy was first studied in solution with the p-(3-aminopropyloxy)aniline. However, its transposition on solid-phase was hampered by an additional cross-linking of the support
Thiault, Guénaël. "Étude de la dégradation d'aldéhydes aromatiques et d'éthers vinyliques dans des conditions atmosphériques simulées." Paris 7, 2002. http://www.theses.fr/2002PA077184.
Full textYaacoub, Saly. "Etude de couches hybrides photopolymérisables de type vinyl éther silane : Application à la fabrication de composants optiques intégrés." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20175/document.
Full textIn the last few years, organic-inorganic hybrid materials were particularly attractive for integrated optical circuits. Hybrid network could be prepared by the formation of inorganic and organic network simultaneously through sol-gel technique and photopolymerization process.A composition based on [2-(3, 4 epoxycyclohexylethyltrimethoxysilane)] has already allowed the fabrication of optical integrated devices. The organic polymerization is on a cationic way. Results show the contributions of OH and aliphatic CH groups to the attenuation in the third telecommunication window located at 1,55 µm.The main objective of this work is to remove this difficulty by developing a new generation of hybrid materials with a very high reactivity and low amount of groups involved in the attenuation. We have chosen vinyl ether function as an organic part because of their well known high polymerization rates via cationic way which are faster than the epoxide function and which lead to no OH groups generation and a very low aliphatic CH groups introduction.In this work, we study the dual functional structure of a new vinyl ether alkoxysilane hybrid precursor. Firstly, hydrolysis and polycondensation of vinyl ether based solution are followed by liquid and solid Si-NMR spectroscopy. The kinetic reaction is followed as a function of time, temperature and pH of the water involved in the hydrolysis, in order to obtain the highest reactive multifunctional oligomer and the lowest OH groups. Secondly, results of the cationic photopolymerization of vinyl ether- based monomers are also reported, using middle infrared spectroscopy. In the presence of diaryliodonium photoinitator, the photopolymerization is studied by monitoring the absorption band of vinyl ether double bond before and after irradiation. The cationic photopolymerization occurs rapidly upon UV-exposure and vinyl ether monomers proved to be very effective monomers. Using near infrared spectroscopy, results show promising attenuation for the use of this material in integrated optic at 1,31 µmand 1,55 µm
Ben, Ayed Achich Kawther. "Synthèse énantiosélective d'aminoacides disubstitués polyfonctionnels via cycloaddition dipolaire d'α-carboxy cétonitrones." Thesis, Le Mans, 2016. http://www.theses.fr/2016LEMA1013/document.
Full textDuring this thesis, we were interested to develop two different ways of 1,3 dipolar cycloaddition to reach enantiopure disubstituted polyfunctionnal amino acids.We have described in a first part the diastereoselective 1,3-dipolar cycloaddition between an aspartic nitrone and chiral vinyl ethers. The aspartic ketonitrone and vinyl ether of (R) or (S) stericol led to high diastreocontrols. This control is due to the stability of the nitrone under (E) geometry which favors the exo approach, facially controlled by the dipolarophile. The chemoselective N-deprotection of this adduct leads to a diastereo- and enantiomerically pure isoxazolidine which affords the target DAA after N-acylation and N-O ring opening by a dismutative pathway. In a second part, we describe the synthesis of isoxazolidines obtained by organocatalytic enantioselective 1,3-dipolar cycloaddition between an alanine-derived nitrone and an enal or an ynal as the dipolarophile. With enals β-substituted by alkyl groups, good diastereoselectivities and ees were obtained in the presence of the MacMillan catalyst. These organocatalyzed conditions can be applied to a range of carboxy ketonitrones, and to different enals, provided an appropriate choice of the co-acid. Ynals show no reactivity under these organocatalytic conditions, although they lead regioselectively to polyfunctional quaternary isoxazolines under thermal conditions.Our study was achieved by the access of polyhydroxylated amino acids derived from opening adducts obtained by the enantioselective route using enals as dipolarophiles. This study allows to envisage the enantioselective synthesis of analogs of myriocin
Abe, Masahiro. "Etude de la réactivité d'ynolethers et ynamines arylogues pour des réactions d'hydroamination. Etude visant la synthèse énantiosélective de la molécule koumine." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMR062.
Full textPiperidine ring is one of the most common heterocycles in natural products and the motif is especially well represented in pharmaceuticals. Consequently, enantioselective synthesis of multi-substituted piperidines is an important topic of investigation. For the synthesis of nitrogen-containing compounds, asymmetric Mannich coupling is a useful strategy while intramolecular hydroamination of alkynes is a practical route to construct N-heterocyclic products. In this thesis, the two strategies were combined. anti-Selective enantioselective Mannich reactions were thus employed to prepare chiral arylalkynyl amines. Connected to various aromatics, the reactivity of the triple bond was then studied in the framework of the intramolecular hydroamination reaction promoted with Brønsted acid. It was shown that depending on the electronic density of the alkyne, these adducts were converted into 5- or 6-membered rings, highlighting the balance between H-bonding and protonation. Tetrahydropyridines and piperidines were thus obtained with high regio-, diastereo-, and enantioselectivity and further functionalizations were also investigated in view of the first enantioselective total synthesis of Gelsemium alkaloid koumine
Bleton, Jean. "Synthèse d'alcynes disubstitués : étude de la transposition de Fritsch-Buttenberg-Wiechell." Paris 11, 1988. http://www.theses.fr/1988PA112203.
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