Literatura académica sobre el tema "Alcools – Synthèse (chimie)"
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Artículos de revistas sobre el tema "Alcools – Synthèse (chimie)":
"Enzyme-Catalyzed Preparation and Synthetic Applications of Optically Active Cyanohydrins". CHIMIA 53, n.º 1-2 (24 de febrero de 1999): 3. http://dx.doi.org/10.2533/chimia.1999.3.
Tesis sobre el tema "Alcools – Synthèse (chimie)":
Pop, Laura Ancuta. "Synthèse stéréosélective d'hétéroaryl alcools et alanines". Phd thesis, INSA de Rouen, 2011. http://tel.archives-ouvertes.fr/tel-00940020.
Bouilleau, Laurent. "Utilisation en synthèse d'organolithiens allyliques alpha et gamma fonctionnels". Poitiers, 1999. http://www.theses.fr/1999POIT2343.
Violleau, Frédéric. "Étude d'un procédé de synthèse et de décomposition en dérivés chlorés de chloroformiates, optiquement actifs ou non, en présence de chlorure d'hexaalkylguanidinium". Toulouse, INPT, 2000. http://www.theses.fr/2000INPT018C.
Huguenot, Florent. "Réactivité d'imines et d'oxazolidines fluorées chirales : application à la synthèse d'aminoacides et d'aminoalcools fluorés énantiopurs : thèse pour le doctorat en sciences spécialité Chimie Organique". Reims, 2004. http://theses.univ-reims.fr/exl-doc/GED00000050.pdf.
This thesis falls under the field of organofluorinated chemistry and the asymmetrical synthesis. We studied various original methodologies of synthesis of di- and trifluoromethyl enantiopur compounds starting from chiral fluorinated oxazolidines and ketimines. The trifluoromethyl ketimines and oxazolidines are prepared by reaction of the fluoral or trifluorométhyl ketones with chiral amines or aminoalcohols. The difluoromethyl analogues are obtained by exploiting the electrophilic properties of difluoroenoxysilanes. The reduction of fluorinated oxazolidines by the hydrides is completely stereoselective, which gives access to enantiopur di- and trifluoromethyl amines. Oxazolidines with Lewis acid form in situ iminium species, which give access to the a-aminonitriles, precursors of enantiopur a-amino acids and 1,2-diamines, and acces to b-aminoesters and the b-aminoketones, precursors of enantiopur b-amino acids and 1,3-aminoalcohols
Fernandes, Beiramar Jorge Miguel. "Etude de la promotion des catalyseurs CuZnAl pour la production d’alcools supérieurs à partir du biosyngaz". Electronic Thesis or Diss., Lille 1, 2013. http://www.theses.fr/2013LIL10170.
This PhD thesis addresses design of novel catalysts for conversion of syngas obtained from biomass into alcohols. It is shown that the catalytic performance of copper-zinc catalysts in carbon monoxide hydrogenation is principally affected by dispersion of copper metallic phase. The performance of these catalysts is strongly affected by promotion with different elements. The activity of the promoted catalysts was correlated with the reducibility of copper phase; the ease of copper reduction leads to more active catalysts. In addition, promotion with iron, chromium and manganese significantly modifies the reaction selectivity. A spectacular increase in carbon monoxide hydrogenation rate was observed on iron-containing catalysts and was attributed to the formation of iron carbide species. Increasing iron content in the catalysts led to higher alcohols productivity and was also accompanied by significant activity in water gas-shift reaction. The catalysts exhibited relative stability in the presence of sulphur containing syngas
Pasco, Morgane. "Synthèse asymétrique de diamines cyclopentaniques polyfonctionnelles : des outils pour l'étude d'interactions avec l'ARN". Paris 5, 2010. http://www.theses.fr/2010PA05P626.
In the laboratory, functionalized 1,3-cyclopentanic diamines have been developped to design new RNA ligands by mimicking the central framework of aminoglycosides. These diamines are easily obtained after functionalization of bicyclic hydrazines and cleavage of the N-N bond. Different synthetic routes has been explored to allow a regio-, diastereo- and in some cases enantioselective introduction of a fluorine atom on these polynitrogenated compounds. Binding experiments using 19F NMR highlighted a supramolecular chiral recognition phenomenon between the fluorinated diamines and RNA. This led to a split of the signal correlated with the location of the fluorine nucleus and the structure of the RNA. Fluorinated diaminocyclopentanes could then serve as useful probes for the study of ligand-RNA interactions. The desymmetrisation of meso 1,3- cyclopentanic diamines using allylic substitution reactions has been studied as well. With the use of iridium catalysis, the efficiency of the resolution of the two amines proved to be very low, and only stereochemistry of the allylic position has been fully controlled. However, the linear monoallylated product could been obtained with an enantiomeric exces up to 61 % using palladium catalysis
Harfouche, Joyce. "Nouvelles méthodologies de synthèse de ligands NN, NNO, et nos chiraux : utilisation en catalyse asymétrique homogène pour la réduction de cétones". Lyon 1, 2005. http://www.theses.fr/2005LYO10147.
Gravil, Sébastien. "Utilisation d'enzymes en synthèse organique : accès à des alcools allyliques et époxydes d'esters d'énols chiraux, acétates de pyranose de configuration anomérique fixée". Clermont-Ferrand 2, 2004. http://www.theses.fr/2004CLF21521.
Wang, Jingjuan. "Design of efficient catalysts for hydrogenation of carbon oxides to alcohols and olefins". Electronic Thesis or Diss., Lille 1, 2012. http://www.theses.fr/2012LIL10052.
Catalytic hydrogenation of carbon monoxide and carbon dioxide leads to valorisation of syngas which can be produced from fossil and renewable resources. This thesis addresses design of new catalysts for synthesis of alcohols and olefins from syngas containing carbon monoxide and carbon dioxide. Catalyst characterization has demonstrated formation of bimetallic particles in copper-cobalt mixed supported catalysts and enrichment of metallic particles with copper on the outer surface in the reduced catalysts. Comparison with catalytic data suggests that these bimetallic particles probably contain the active sites for the synthesis of alcohols from syngas. The supports (SiO2, Al2O3 and carbon nanotubes), and some promoters, especially iron, also have a very strong influence on the catalyst performance. Promotion with iron also increases productivity of Rh catalysts in the synthesis of ethanol from syngas. The formation of interfaces between the iron and rhodium seems to improve the selectivity of this reaction to ethanol, while carbon monoxide conversion principally depends on rhodium dispersion. The Fe/ZrO2 catalysts promoted with potassium showed a very important selectivity for the synthesis of olefins from carbon dioxide. This increase in selectivity was attributed to the synergy between iron and oxidized species Fe0/χ-Fe5C2 which are involved in this reaction
Nguyen, Tien Thao. "Development of perovskite catalysts for the synthesis of higher alcohols from syngas". Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24583/24583.pdf.