Tesis sobre el tema "Hydrazene"
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Guevrekian, Soghomoniantz Marina. "Synthèse de nouvelles hydrazones dérivées d'hydrazines disubstituées en position 1 : étude de leurs propriétés antibactériennes, de leur cytotoxicité sur deux espèces d'algues et de leur toxicité sur les alevins de truites". Paris 7, 1985. http://www.theses.fr/1985PA07F059.
Texto completoBelkheiri, Nadji. "Dérivés phénoliques à activités antiathérogènes". Toulouse 3, 2010. http://thesesups.ups-tlse.fr/961/.
Texto completoCardiovascular disease (CVD) are the leading cause of mortality and morbidity in industrialized countries. It has been clearly shown that peroxidation of lipoproteins, mainly low density lipoprotein (LDL), is a critical stage of a very complex process leading to atherosclerosis. Indeed, the relative increase of reactive oxygen species (ROS) due to oxidative stress, induced by means of oxidized low density lipoprotein (oxLDL), a vascular dysfunction. The phenolics are known for their antioxidant properties, especially their free radical scavengers. On the other hand, the hydrazones are effective scavengers carbonyls. In this context, the work described in this manuscript are focused on the research of new molecules with dual cytoprotective and antioxidant properties vis-à-vis the deleterious action of carbonyls from lipid peroxidation of LDL. Based on previous results of the laboratory, we designed and synthesized a new set of phenolics from the same brick molecular the bisvanilline. Bishydrazones of symmetrical and / or with dissymmetry in this case is a function of vinyl-phosphonate and function hydrazone were prepared and studied. At the same time, from the corresponding monohydrazones syringaldehyde have been synthesized and tested. Initially, the antioxidant and cytoprotective were determined for all the molecules synthesized. The most effective compounds were then tested further to assess the effects of carbonyl scavengers, radical O2°- and NO° cell systems (in vitro). The results show unambiguously that, for the first time, we have synthesized molecules with both antioxidant and carbonyl scavenger effect. Finally, the in vivo activity of the most active compound, was evaluated. In a second step, Physicochemical studies have been conducted to understand the mode of action of these compounds through three potential activities in conjunction with their antiatherogenic properties. These tests were on: -The ability of the compounds synthesized radical scavenging stable DPPH• and ABTS•+. -The complexing properties of these compounds with respect to the Cu metal. -The inhibitory action of the compound most active with respect to the in vitro production of superoxide anion O2- degrees
Zerkout, Saïd. "Synthèse d'hydrazino peptides". Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL052N.
Texto completoHsu, Ivann Hong, Joanna Emerson, Andrew Wong y Phillip Zinsli. "2-HYDROXYETHYL HYDRAZINE AND HYDRAZINE HYDRATE PLANT DESIGN". Thesis, The University of Arizona, 2009. http://hdl.handle.net/10150/192492.
Texto completoHuttenhower, Hillary Anne. "Development of new chemistry for a dual use hydrazine thruster, switchable room temperature ionic liquids, a study of silane grafting to polyethylene and its model compounds, synthesis of the novel hydrazine replacement fuel molecules 1,1-dimethyl-2-[2-azidoethyl]hydrazine and 1,1-dimethyl-2-[2-azidoethyl]hydrazone". Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/41055.
Texto completoSaalmann, Thomas. "Umwandlung cyclischer Hydrazine". [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=97226888X.
Texto completoLe, Duc Minh. "Nouvelle stratégie d’élaboration de la monométhylhydrazine via le procédé Raschig en utilisant la technologie des microréacteurs : synthèse de la chloramine dans des conditions quasi-stoechiométriques et isolement en une seule étape multifonctionnelle". Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10335.
Texto completoThis work, conducted as part of a collaboration with the Safran-Heraklès group, aims at developing a new synthesis concept for the monomethylhydrazine (MMH), by process intensification using microreactor technology. The work was funded by the Rhône-Alpes region in the form of a doctoral fellowship TARGET 2008-2011. The first part of this research aims to study the stability of monochloramine solutions prepared in stoichiometric conditions. This synthesis was carried out continuously, for the first time ever, using microreactor technology. Optimal synthesis conditions as well as a set of security parameters have been established for a fast and secured transfer to industrial scale. The second part, also one of the main objectives of this work, is the extraction, under pressure, of all organic products (mostly MMH and monomethylamine) in the form of one condensed phase by demixing the crude reaction liquors. This phenomenon is related to the existence of a miscibility gap in the liquid ternary system H2O-MMA-NaOH. The optimization of the demixing step requires then the study of different solid-liquid-liquid phase diagrams involved. The last part deals with the chemical engineering aspect of the research. A kinetic modeling of the synthesis of MMH by the Raschig way was used in order to estimate the composition of the synthesis solution. These results and the application of phase diagrams allow the determination of optimal conditions for the isolation step and the establishment of process flow-sheets for the synthesis of MMH
Clavette, Christian. "Synthesis of Beta-Aminocarbonyl Compounds and Hydrazine Derivatives Using Amino- and Imino-Isocyanates". Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32004.
Texto completoVogt, Kirkland W. "Nitridation reactions with hydrazine". Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/10032.
Texto completoCriton, Thomas. "Systèmes polyazotés énergétiques : stratégie de synthèse, caractérisation et réactivité". Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1222.
Texto completoHydrazines for propulsion have been identified by REACH regulation as Substances of Very High Concern (SVHC) and their use is therefore threatened. High Energy Density Materials (HEDM) represent a class of polynitrogen compounds with computed energetic performances breaking away from existing technologies. Besides solving toxicity issues thanks to their decomposition in molecular nitrogen, their use would highly simplify launcher’s technologies and decreases their cost. Two candidates have been proposed by the CNES and ArianeGroup to replace hydrazines: triaziridine (N3H3) and tetrazetidine (N4H4). The main goal of this thesis is to develop new methodologies for the synthesis of polynitrogen compounds and to investigate their reactivity to access to original structures such as triaziridine and tetrazetidine. Homologation of simple nitrogen-based compounds with azodicarboxylates enabled us to access new original superior polynitrogen molecules (N3, N4, N5, N6…). Structural evidences of these new polynitrogen backbones have been obtained by X-ray diffraction. Their reactivity by regioselective activation and by oxidation has been studied to access cyclic polynitrogen structures
Cheaib, Khaled. "Synthesis, characterization and photochemical properties of 3d transition metal supported by aroyl-hydrazone ligands". Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAF062/document.
Texto completoThis PhD thesis explored some aspects of the coordination chemistry of molecular complexes based on 3d transition metal ions (Fe, Cu, Mn and Ni) coordinated by multidentate aroyl-hydrazone ligands. The work of this thesis was particularly focused on the development of new ligands, their coordination chemistry and the photochemistry of ferric complexes. The central objective of this work was to elucidate the mechanism of the photo reduction process, in order to valorize an already accepted laboratory patent on the production and storage of solar energy. The complexes involved in the process have been fully characterized in solution and in the solid state. This phenomenon takes place in solution as in frozen solution. The kinetics of the photochemical process was followed by UV-Visible as by RPE. This photo reduction passes through a radical intermediate and the solvent plays the role of the electron donor. This process has been fully studied: the effect of the solvent, the effect of the modification in the coordination sphere of the complex, the effect of the modification of the periphery of the ligands and finally the effect of the light and different wavelengths. Other fields are also explored, such as molecular magnetism for different mono and dinuclear iron and manganese complexes or even homogeneous catalysis (oligomerization of ethylene) with complexes based on Ni(II)
Ronsseray, Caroline. "Des isonitriles aux hydrazones : Réactions multicomposants et Synthèses d'hétérocycle". Phd thesis, Palaiseau, Ecole polytechnique, 2011. https://pastel.hal.science/docs/00/66/49/85/PDF/Final2M.pdf.
Texto completoMulticomponent reactions (MCR), as one-pot reactions, are effictient to synthesis target compounds with at least 3-starting materials. This methodology is very useful, in particular for heterocycle synthesis. Isocyanides, due to their specific reactivity, are favorite starting materials for these reactions. In first hand, a new oxazole-synthesis was discovered. Two reactions are in competition, that is why this study further stress the influence of the base on the chemoselectivity of the process. In second hand, research have been made on hydrazones. A new 3-components synthesis was discovered. This reaction coupled with a Fischer synthesis is an efficient way to obtain indole compounds. Moreover, these hydrazones allow us to discover a new reaction of cyclisation/oxidation to form pyrazolidinones. This new reaction applied to product prepared thanks to the Ugi coupling, become a new post-condensation reaction for these compounds
REIS, RONALD DA SILVA. "TREATEMENT WASTEWATER EFFLUENTS CONTAINING HYDRAZINE". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5112@1.
Texto completoIn Brazil, the use of energy produced by power plant generators is in expansion. Power plants use large quantities of water and chemical products that after use end up in effluents. Hydrazine is used in water systems for corrosion control, because of its excelents oxygen scavenging capacity. The present work was conducted to study the treatment of effluents containing hydrazine, under a technological approach, with the purpose of contributing to a systematic of effluents control in power stations. The process studied in this work was the decomposition of hydrazine with hydrogen peroxid in presence catalyst cooper íon. The experiments were made in laboratory scale, using synthetic effluents with initial concentration of hydrazine at the levels 10 and 100 mg/L, with initial pH values 7 and 9,5, temperature fixed at 220C, with addition of st oichiometric amounts of hydrogen peroxide, with and without addition of cooper ion catalyst. It was conclued that the process its viable for reduction of hydrazine concentration in effluents with pH 9,5, below to levels under legislation (1mg/L), using stoichiometric amounts of hydrogen peroxide together with 1 mg/L of cooper ion, in times less that 30 minutes and ambient temperature. Therefore this work showed that the process is adequate in satisfying the Brazilian legislation for discharge of effluents into water bodies according to regulation CONAMA 20, letter P-031/01 clause 2 article V, 09 February 2001.
Marques, de Oliveira Paulo Filho. "Investigation of mechanochemical synthesis of condensed 1,4-diazines and pharmaceutically attractive hydrazones". Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2015. http://www.theses.fr/2015EMAC0007/document.
Texto completoOne of the goals of pharmaceutical and chemical industries is the development of green processes that eliminates or reduces the use of solvents. However, avoiding solvents often requires the use of metal catalysts or others, that accelerates chemical reactions, but make the purifications difficult, especially in the case of fine chemical products, such as active pharmaceutical ingredients. The mechanochemistry has emerged as a sustainable way that enables chemical synthesis, including organic molecular transformations, using the mechanical energy. In spite of the recent advances of the methodology, some aspects of the mechanical action still remain to be fully elucidated, mainly concerning the mechanisms. In this thesis, three main axes of mechanochemistry were explored. First, the molecular mechanism of 1,4-diazine mechanosynthesis, mentioning dibenzo[a,c]phenazine (DBPZ) and 2,3-diphenylquinoxaline (DPQ), is investigated by using 13C CP-MAS NMR that reveals intermediate species for DBPZ, and by calorimetric measurements that show continuation of the reaction after grinding for both reactions. The possibility of a concerted mechanism is considered for dibenzo[a,c]phenazine case. The second focus is on 2,3-diphenylquinoxaline product formation. The process parameters for a vibratory ball mill were studied. Grinding material, size and mass of the balls, granulometry of the starting material were assessed, as well as the temperature of the milling media, providing apparent activation energy (Ea). Arrhenius and Eyring-Polanyi plots presented changes in Ea indicating changes in mechanism, which was attributed to a possible mechanically induced eutectic melting after 30°C. Finally, after understanding some fundamentals and processes for those model reactions, the mechanochemical route was successfully applied to solid-state synthesis of pharmaceutically attractive phenolic hydrazones and catalyzed isoniazid derivatives synthesis, by reacting solid aldehydes and hydrazines. In general, the products were obtained in shorter times and in higher yields compared to classical thermal route. The roles of electronic and solid-state reactivity of the hydrazines were discussed. Biological assays demonstrated the great activity of isoniazid derivatives in inhibiting Mycobacterium tuberculosis. The results presented here cover the mechanochemistry at different levels. The fundamental comprehension is still difficult to access due to the complexity of the system, but some advances could be made such as the detection of intermediate species with significant lifetime. The process parameters are equally important to deduce some mechanism, but also for scale up purposes. At last, the mechanosynthesis of hydrazones showed to be a greener route to produce pharmaceuticals, for high screening of new ones, as well as for the synthesis of others, with great purity and waste reduction
Thompsett, David. "Hydrazine and carbazate complexes of chromium and manganese : their role in the catalytic decomposition of hydrazine". Thesis, University of Bath, 1987. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376340.
Texto completoGellermann, Eike. "Silylhydrazine und -hydrazone Insertionsreaktionen und Isomerisierung /". [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=963676393.
Texto completoMoody, K. N. "The vapour phase oxidation of hydrazine". Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354436.
Texto completoLindgren, Kristjon y Dana Seng. "The Effects of Cyp2e1 on Hepatic Gene Expression in 129/Sv-Cyp2e1^tm1Gonz/J and 129S1/SvImJ Mice Exposed to Hydrazine". The University of Arizona, 2007. http://hdl.handle.net/10150/624424.
Texto completoObjectives: To characterize the difference in hepatic gene expression between Cyp2e1 +/+ and Cyp2e1 -/- mice after exposure to hydrazine in order to elucidate the functional pathway(s) for hydrazine-induced steatosis. Methods: The project was designed by Dr. Charlene McQueen and consisted of the following aims: (1) to characterize the hepatic pathology induced by hydrazine in CYP2E1 +/+ and -/- mice, (2) to evaluate hepatic gene expression profiles following exposure to hydrazine, and (3) to determine the expression of CYP2E1 and CYP4A14. The animal exposure and data collection have been completed and aim #2 is awaiting data analysis. Aim #2 consisted of treating CYP2E1 +/+ and CYP2E1 -/- mice to saline and hydrazine at doses of 100 mg/kg. Livers were collected at six and 24 hours and the mRNA was isolated with an Absolutely RNA RT-PCR Miniprep Kit. The transcriptome was determined using the Affymetrix GeneChip Expression Analysis System using total mouse genome GeneChips. The GeneChips were scanned using an Agilent GeneArray Scanner and the image was quantitated and archived awaiting data analysis. The data was collected by the SWEHSC Microarray Facility on June 20, 2005 was analyzed. The data analysis was completed by both Kristjon Lindgren and Dana Seng with the help and training from Dr. George Watts. The six sets of data from aim #2 was analyzed using Agilent's GeneSpring 7.3.1 software to characterize the two-fold differences in mice (n = 2 per group) hepatic gene expression. Genes of interest were identified as containing the keywords cyp, fatty, glutathione, hepat, lipid, liver, oxid, perox, steroid, and phosphatidylinositol in the Gene Ontology Biological Process, Cellular Component, or Molecular Function descriptions. Lastly, pathway mining of/for genes of interest was performed using Bioresource for array of genes (BioRag) available at www.biorag.org and maintained by the AzCC/SWEHSC Bioinformatics Facility. Results: The amount of information extracted from this research project is too immense to be described or summarized on this form. For more information, please obtain a copy of this research project from the University of Arizona College of Pharmacy or from the project co-authors Kristjon Lindgren (kristjon.lindgren@gmail.com) or Dana Seng (dana.seng@gmail.com). Conclusions: The effects of Cyp2e1 on hepatic gene expression in 129/Sv-Cyp2e1tm1Gonz/J and 129S1/SvImJ mice exposed to hydrazine was analyzed. Data showing that Cyp2e1 was protective against HD-induced hepatotoxicity was consistent with the proposed hypothesis. Hepatic gene expression results show that Cyp2e1 -/- mice have decreased expression of microsomal ω-oxidation genes (Cyp4a10 and Cyp4a14) compared to Cyp2e1 +/+ at 6h (both increased at 24h) and peroxisomal β–oxidation genes (Ehhadh) at 6h like Cyp2e1 +/+ (but increased at 24h only in Cyp2e1 -/-). Conversely, an increased expression of mitochondrial β-oxidation genes (Cpt1a) in both genotypes at 6 and 24h and cholesterol synthesis genes (Fdft1, Hmgcr, Hmgcs1, Idi, Lss, Mvk, Nsdhl, Sc4mol, and Sqle) in Cyp2e1 -/- at 24h was observed. These results support mechanisms by which ω-oxidation or PPARγ is protective or peroxisomal β- oxidation is damaging. Additional studies are needed to further eludidate the mechanisms of HD-induced steatosis.
Samanta, Susnata. "Reversible carbon dioxide gels, synthesis and characterization of energetic ionic liquids, synthesis and characterization of tetrazole monomers and polymers, encapsulation of sodium azide for controlled release". Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22602.
Texto completoCommittee Chair: Prof. Charles L. Liotta; Committee Member: Prof. Arthur J. Ragauskas; Committee Member: Prof. Charles A. Eckert; Committee Member: Prof. John D. Muzzy; Committee Member: Prof. Rigiberto Hernandez.
Roussi, Fanny. "Synthèse asymétrique d'hydrazines mono et bicycliques polyfonctionnalisées via de nouvelles méthodes d'alkylations et de cycloadditions 1,3-dipolaires". Paris 5, 1999. http://www.theses.fr/1999PA05P620.
Texto completoGravelle, Kristian G. "Radical cyclizations of hydrazones". Thesis, University of Ottawa (Canada), 1997. http://hdl.handle.net/10393/9806.
Texto completoGravelle, Kristian. "Radical cyclizations of hydrazones". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20975.pdf.
Texto completoPerry, Matthew William Dampier. "Synthetic applications of hydrazones". Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:5009520c-850a-4030-a8b2-2245b4abe264.
Texto completoZadick, Anicet. "Pile à combustible alcaline directe à hydrazine-borane". Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAM021/document.
Texto completoThe present PhD work focusses on the development of an original and innovative technology of direct liquid alkaline fuel cell (DLAFC) using hydrazine borane as a fuel for the anode. Thermodynamically, a direct hydrazine borane fuel cell (DHBFC) system can have an operating voltage value around 1.6 V when the most commercialized and mature proton membrane exchange fuel cell (PEMFC) technology can only reach 1.23 V (and in practice this value is even lower than 1 V). In principle, a direct alkaline fuel cell technology such as the DHBFC addresses most of the issues encountered in acidic PEMFC systems (such as the cost of the platinum-containing electrodes and their poor durability) and hydrazine borane is a relevant alternative to store chemically the hydrogen in the form of a white powder that is stable in alkaline solutions; this chemical hydrogen storage is easier, safer and more user-friendly than compressed H2 gas.This PhD work demonstrates that the HB electrooxidation reaction (HBOR) in alkaline medium is possible and efficient on noble metals such as palladium (cheaper than platinum) and more importantly on noble-free nickel-based materials. For those materials, the HBOR onset potential is measured below 0 vs. RHE, which enables to expect promising operating voltage if they are used as anode electrocatalysts in DHBFC systems. This solution allows to diminish the technology’s cost (both in terms of fuel storage and electrocatalyst materials) and could enable to rival industrially PEMFC systems, if the anode durability is demonstrated.On this prospect, whereas non-noble metals (such as nickel) can generally not be used as anode electrocatalysts in acidic PEMFC systems because of their instability, this work demonstrates that they are stable in alkaline environment. Surprisingly, “state-of-the-art” platinum (and palladium) electrocatalysts, generally used in PEMFC, are unstable in alkaline medium: indeed, platinum (and palladium) carbon-supported nanoparticles are highly degraded (and in lesser extent for palladium) in alkaline solution, after 150 potential cycles in a usual potential window; so, these “state-of-the-art” noble electrocatalysts are not suitable for real DHBFC system applications. Therefore, the nickel-based electrocatalysts (both active and stable) are found to be the most suitable electrocatalyst materials for the DHBFC anode.Finally, it is also demonstrated that the nature of the borane fuel is critical for a utilization in DALFC system; hydrazine borane is found to be the most promising fuel against ammonia borane (AB) or dimethyl amine borane (DMAB). The borane electrooxidation reaction (BH3OR), carried out on palladium electrocatalysts (despite its relative instability for real systems, palladium is a suitable noble and model electrocatalyst to get a better understanding of BH3OR mechanism), using these various fuels sheds light on the detrimental (poisoning) role of the counter-borane fragments of AB and DMAB (ammonia and dimethyl amine, respectively); on the contrary, the counter-borane fragment of HB (hydrazine) is found to have no detrimental effect on the BH3OR. Interestingly, the hydrazine moiety is completely electrooxidized on palladium, leading to 4 exchanged electrons in addition to the 6 exchanged electrons generated by the BH3OR.To conclude, this PhD work underlines the interest of hydrazine borane for the DHBFC systems, in particular for nomad applications, where the hydrogen storage can be a problem. HB is a relevant fuel to store chemically the hydrogen and to be valorized on noble-free materials, diminishing the overall system cost while ensuring a sufficient durability for the DHBFC anode
Elmamouni, Elhachemia. "Nouvelles applications de la réaction de Passerini dans des réactions de type Friedel-Crafts et Tsuji-Trost". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX011/document.
Texto completoThe development of rapid and efficient syntheses of complex molecules from simple starting substrates using a minimum of steps is a real challenge of contemporary organic chemistry. In this context, multicomponent reactions, thanks to their ability to create several one-step bonds, offer a high efficiency in synthesizing structures of great molecular complexity. Moreover, organometallic catalysis has developed considerably in recent years, becoming a tool of choice for the formation of carbon-carbon bonds. The Tsuji-Trost reaction is specially well known in this field.In this thesis, the discovery of the original post-condensations from the adducts obtained by multicomponent reactions involving isonitrile is the major axis of our research. These reactions allow efficient access to a wide range of heterocyclic compounds.First, we have developed a new efficient pathway for the synthesis of indolylacetamides via the Passerini/Friedel-Crafts cascade from the Passerini adducts and indole in the presence of a Lewis acid. A one-pot version of this cascade has been also developed.Furthermore, we have exploited the reactivity of N-monosubstituted hydrazones as 1,3-bis-nucleophile in order to prepare various 2-pyrazoline derivatives via a pallado-catalyzed Tsuji-Trost/Cyclisation cascade from the Passerini adducts or Phosphonates. In order to prepare enantioselectively enriched 2-pyrazolines, the enantioselective version of this cascade was also realized from the Passerini adduct.Finally, the development of a new Tsuji-Trost/Cyclization cascade from the Passerini adducts and the allyl methyl carbonate provide straight fast and efficient access to oxazolidine-2,4-diones heterocyclic units by exploiting the carbon dioxide generated in situ
Buff, Heiko. "Hydrazone als Aza-Enamine in der Nenitzescu-Reaktion". [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963417282.
Texto completoKlein, Jörg Martin. "Dynamic combinatorial chemistry of hydrazone and disulfide macrocycles". Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/252248.
Texto completoGhassemi, Hossein. "Synthesis and properties of novel polyimides utilizing hydrazine". Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28451.
Texto completoAll of the polymers show remarkably high glass transition temperatures, as high as 455$ sp circ$C. Their 5% weight loss by thermogravimetric analysis in an atmosphere of air or nitrogen are all above 440$ sp circ$C. Most of these polymers are highly fluorescent. Their emission spectra are in the visible region and show some evidence for an excited energy transfer and molecular aggregation.
Li, Qing Hua. "Second generation camphor sulfonyl hydrazine (CaSH II) organocatalysis". HKBU Institutional Repository, 2013. http://repository.hkbu.edu.hk/etd_ra/1525.
Texto completoPrieto, Alexis. "Fluoroalkylation métallo-catalysée des hydrazones". Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1172/document.
Texto completoFluorine chemistry is attracting the growing interest of organic chemists due to its industrial exploitation in the pharmaceutical and agrochemical fields. Thus, new methods for the effective and selective introduction of fluorinated groups – and particularly fluoroalkyls - on target molecules have been sought in recent years. Hydrazones are widely used reagents in organic synthesis, notably as precursors of many compounds pursued by the pharmaceutical or agrochemical industries, including primary amines and nitrogen heterocycles such as pyrazoles and indoles. This thesis work focused on the fluoroalkylation of hydrazones. The first studies have been directed toward the copper-catalyzed trifluoromethylation of aldehyde- and ketone-derived hydrazones, which led to the formation of trifluoromethylated hydrazones and alpha-trifluoromethylated azenes, respectively. Subsequently, this transformation was extended to the regioselective beta-trifluoromethylation of alpha,beta-unsaturated hydrazones. Finally, our interest focused on the development of difluoroalkylation reactions of aldehyde-derived hydrazones under palladium or copper catalysis. The various compounds obtained in these investigations have proven to be valuable precursors of trifluoromethylated ketones and indoles, alpha, alpha-difluoro-beta-ketoesters, as well as alpha,alpha-difluoroketones
Shu, Huihua Chin Bryan Allen. "Applications of poly (3-hexylthiophene) thin film as a hydrazine-sensitive chemiresistor". Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/SHU_HUIHUA_8.pdf.
Texto completoPeyrot, Laurent. "Nouvelle avancée dans le procédé Raschig : élaboration de chloramine haute teneur, extension à la synthèse d'une hydrazine à structure indolique : la N-amino-2-méthylindoline". Lyon 1, 1998. http://www.theses.fr/1998LYO10006.
Texto completoLahlaouti, Mohammed l'Hassane. "Contribution à l'étude des propriétés physiques de l'hydrazine et des mélanges hydrazine-eau". Lille 1, 1990. http://www.theses.fr/1990LIL10185.
Texto completoKöhler, Brigitte. "Von der Koordinationschemie der Azaphosphole zur Koordinationschemie funktionalisierter Hydrazone". Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-104523.
Texto completoWalton, Kim. "The metabolism and mutagenicity of the mushroom hydrazine, agaritine". Thesis, University of Surrey, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267410.
Texto completoChen, Lingyan. "CaSH (camphor sulfonyl hydrazine) and CSI (chiral sulfonimide) organocatalysis". HKBU Institutional Repository, 2010. http://repository.hkbu.edu.hk/etd_ra/1186.
Texto completoRichards, Victoria Elizabeth. "The role of acetylation in the hepatotoxicity of hydrazine". Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280532.
Texto completoTirza, Cornelia. "Nouvelles réactions des hydrazones et trialkylalanes". Palaiseau, Ecole polytechnique, 2003. http://www.theses.fr/2003EPXX0017.
Texto completoTšubrik, Olga. "New methods in the synthesis of multisubstituted hydrazines /". Online version, 2006. http://dspace.utlib.ee/dspace/bitstream/10062/481/5/tsubrik.pdf.
Texto completoGarland, Keira. "A Practical Approach to Semicarbazone and Hydrazone Derivatives via Imino-isocyanates". Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30725.
Texto completoPhillips, C. H. "The adsorption and autoxidation of hydrazine vapour on polymeric and metallic surfaces". Thesis, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278352.
Texto completoWhite, Christopher George. "Structural determinants of substrate oxidation by horseradish peroxidase isoenzyme C". Thesis, University of Sussex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390522.
Texto completoPinto, Maria-Fatima. "Nouvelles voies de synthèse d'hydrazines fonctionnalisées : application à la préparation d'isoniazide monomarqué à l'azote 15 et d'alpha-hydrazinoesters chiraux". Nancy 1, 2002. http://www.theses.fr/2002NAN10189.
Texto completoThis work aims at developing a new efficient synthetic route to N-functionalised hydrazine derivatives using N-aminophtalimide, N-acyl and N-alkyloxycarbonylaminophtalimides. The first part describes the synthesis of regioselective singly-labeled nitrogen 15 hydrazide, starting from N-aminophtalimide (15N). The direct application of this first study is the synthesis of two isotopic isomers of isoniazid (a front-line antituberculosis drug), which elucidate the activation of isoniazid by catalase-peroxydase from Mycobacterium tuberculosis. Moreover the reactivity of N-acyl and N-alkyloxycarbonylaminophtalimides which can be considered as hydrazines bearing three electron-withdrawing groups including two incorporated into the phtaloyl moiety, is developed in a second part. These compounds were used in phase transfert catalysis conditions and as acidic partners in the Mitsunobu reaction for the preparation of monoalkylhydrazines, monoalkylhydrazides and alkylcarbazates. In the third part , this current method was extented to include the preparation of protected chiral hydrazinoacid derivatives via the Mistunobu protocol. Finally the conformationel study and reactivity of N-aminophtalimide and its derivatives is reported
Dabb, Serin Lloyd Chemistry Faculty of Science UNSW. "Hydrazine in late transition metal-mediated N-C bond formation". Publisher:University of New South Wales. Chemistry, 2008. http://handle.unsw.edu.au/1959.4/41428.
Texto completoNorooz, Oliaee Shirin. "Catalyst Development and the Structure-Dependent Properties for Hydrazine Decomposition". University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1468618168.
Texto completoHe, Hao. "Organocatalysis : hydrazine and sulfonimide as new functionalities in asymmetric organocatalysis". HKBU Institutional Repository, 2009. http://repository.hkbu.edu.hk/etd_ra/1104.
Texto completoFischmann, Svenja [Verfasser]. "Makrocyclen durch dynamisch-kombinatorische Kondensationsreaktionen Imine - Hydrazone - Oxime / Svenja Fischmann". Kiel : Universitätsbibliothek Kiel, 2015. http://d-nb.info/1080170979/34.
Texto completoVongsutilers, Vorasit. "The effect of C8-arylguanine adducts on B/Z-DNA equilibrium implications in aryl hydrazine carcinogenesis /". Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10058.
Texto completoTitle from document title page. Document formatted into pages; contains xiv, 301 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 193-213).
Oropeza, Cristina M. "An evaluation study of the effectiveness of using a reaction-based process for hydrazine waste remediation". Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4816.
Texto completoID: 030646205; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Thesis (Ph.D.)--University of Central Florida, 2011.; Includes bibliographical references (p. 144-146).
Ph.D.
Doctorate
Chemistry
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Chemistry
ATLAN, VALERIE. "Nouvelles avancees dans la chimie des hydrazones". Paris 11, 2000. http://www.theses.fr/2000PA112280.
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