Thèses sur le sujet « Carboxy Pyridine »
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Leyva-Ramos, Roberto, Raul Ocampo-Perez, Oliva L. Torres-Rivera, Maria S. Berber-Mendoza et Nahum A. Medellin-Castillo. « Kinetics of pyridine adsorption onto granular activated carbon ». Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-191056.
Texte intégralLeyva-Ramos, Roberto, Raul Ocampo-Perez, Oliva L. Torres-Rivera, Maria S. Berber-Mendoza et Nahum A. Medellin-Castillo. « Kinetics of pyridine adsorption onto granular activated carbon ». Diffusion fundamentals 11 (2009) 83, S. 1-2, 2009. https://ul.qucosa.de/id/qucosa%3A14054.
Texte intégralRobveille, Jacques. « Synthèse de pyridine et d'isoquinoléine marquées au 14C sur l'hétérocycle azoté ». Lyon 1, 1985. http://www.theses.fr/1985LYO10513.
Texte intégralBonnet, Véronique. « Synthèse et réactivité d'organomagnésiens en série pyridinique ». Rouen, 2002. http://www.theses.fr/2002ROUES013.
Texte intégralSeveral synthetic methods via magnesiated pyridines were developed to reach many compounds. The halogen-magnesium exchange was developed from many easily available bromopyridines. This reaction when proceeded at room temperature with isopropylmagnesium chloride gave the corresponding pyridylmagnesium chlorides, which could be trapped with various electrophiles. The metallation using isopropylmagnesium chloride or dibutylmagnesium as bases, directed by a secondary carboxamide or a pivaloylamino group at C2 led to 3-pyridylmagnesium halides, which were quenched by different electrophiles. At last, magnesiated benzenes and pyridines were involved in transition metals catalyzed couplings with many nitrogen p-deficient aromatic substrates. The reaction could proceed at low temperatures, allowing the use of substrates prone to nucleophilic attack or carrying reactive functions
鄭嘉慧 et Kar-wai Anita Cheng. « Preparation, reactivities and oxidative catalytic activities of ruthenium(II) polypyridines, rhenium(I) carbonyl complexes andruthenium-encapsulated meso- and micro-porous molecular sieves ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31236662.
Texte intégralCheng, Kar-wai Anita. « Preparation, reactivities and oxidative catalytic activities of ruthenium(II) polypyridines, rhenium(I) carbonyl complexes and ruthenium-encapsulated meso- and micro-porous molecular sieves / ». Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1973816X.
Texte intégralBoucida, Seddik. « Synthèse et étude de cyclotriphosphazènes à liaisons phosphore-carbone porteurs de substituants pyridyle ». Montpellier 2, 1998. http://www.theses.fr/1998MON20209.
Texte intégralCouve-Bonnaire, Samuel Castanet Yves Carpentier Jean-François. « Synthèse de dérivés pyridiniques fonctionnalisés-cétones, cétoamides et cétoesters-par réaction de carbonylation de précurseurs halogènes ». [S.l.] : [s.n.], 2001. http://www.univ-lille1.fr/bustl-grisemine/pdf/extheses/50376-2001-163-164.pdf.
Texte intégralCouve-Bonnaire, Samuel. « Synthèse de dérivés pyridiniques fonctionnalisés-cétones, cétoamides et cétoesters-par réaction de carbonylation de précurseurs halogènes ». Lille 1, 2001. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2001/50376-2001-163-164.pdf.
Texte intégralUne fois encore, les résultats dépendent des paramètres expérimentaux et plus particulièrement de la nature du précurseur catalytique et de la position du motif halogéné sur le cycle hétéroaromatique. Les meilleurs résultats sont obtenus en synthèse d'alpha-cétoamides, néanmoins les séléctivités en composé dicarbonylé, cétoamides ou coesters, sont les plus élevées rapportées pour ce type de composés. La dernière partie de nos travaux est consacrée à la réduction asymétrique des dérivés d'acides pyridyglyoxyliques synthétisés précédemment par deux méthodes différentes : l'hydrogénation asymétrique et la réduction par agent stoechiométrique. L'influence néfaste du noyau pyridinique sur la réaction a été évaluée
Roudesly, Fares. « Fonctionnalisation C-H dirigée d'hétérocycles azotés ». Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS354.
Texte intégralThis thesis work has brought its contribution the field of C-H activation / functionalization of nitrogenous containing rings as pyridine and pyrrole. First, we developed a strategy for a Pd- catalyzed regioselective allylation and alkenylation of azine N-oxides. The scope of this reactivity has been studied. Experimental studies and DFT calculations allowed us to propose a mechanism for the allylation and isomerization steps. We propose that the C-H activation step is the rate determining step of the catalytic cycle, and that it takes place through an outer sphere deprotonation / palladation mechanism. Next, we applied the Murai reaction to 2-pyrrole- carboxaldehyde derivatives using a Ru(0) complex. Under an atmospheric pressure of carbon monoxide, we could obtain the acylated products in the presence of various vinylsilanes and styrenes. The application of this reactivity to other 2-pyrrole carboxaldehyde derivatives is under study in the laboratory
Guetta, Brigitte. « Vieillissement hygrothermique de composites a matrice psp : etude cinetique, mecanique et spectroscopique ». Paris, ENMP, 1987. http://www.theses.fr/1987ENMP0057.
Texte intégralPittaya, Kanchanapakonchai Amnuay Thithapandha. « Effects of vitamin B6 on CC14 toxicities in rats / ». abstract, 1986. http://mulinet3.li.mahidol.ac.th/thesis/2529/29E-Pittaya-K.pdf.
Texte intégralLeclerc, Hervé. « Caractérisation par spectroscopie infrarouge de solides organiques inorganiques de type MOF (Metal Organic Framework) : Thèse soutenue sur un ensemble de travaux ». Caen, 2011. http://www.theses.fr/2011CAEN2017.
Texte intégralThis study reports the characterization by in situ infrared spectroscopy of an isostructural family of four porous MOFs (MOF: Metal Organic Framework) denoted MIL-100(X) (MIL: Material from the Institute Lavoisier) with X: Al3+, Fe3+, Al3+ and V3+. The characterizations of the metallic centers and acido-basic properties have been performed at different temperature of activation by adsorption or not of probe molecules such as CO, CO2, CD3CN, pyridine and propyne. The first part devoted to the MIL-100(Cr), reveals the lack of any significant basic sites but the occurrence of Cr3+ Lewis acid sites located on the trimers. Adsorption of water or alcohols transforms the Lewis sites into Bronsted acid sites whose strength depends on the nature of the adsorbate and of the complex formed. The second part is dedicated to the study of the MIL-100(Fe) material. It reveals first the presence of Fe3+ sites able to be reduced into Fe2+ sites by thermal treatment under vacuum and secondly demonstrates the occurrence of a pi-back donation effect which increases the interactions between Fe2+ unsaturated sites and molecules such as CO, propene and propyne. The spectroscopic study of MIL-100(Al) presented in the third part reports for the first time a precise characterization of unsaturated pentahedral Al3+ sites present in a large amount and in a well defined crystallographic environment. The last chapter presents the characterization of MIL-100(V) activated at different temperatures: nature of the extra framework species and of unsaturated metallic sites
Perez, Natália Marcomini. « Investigação da influência do solvente nas transições eletrônicas e na liberação de CO de carboxilatos trinucleares de rutênio ». Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-03122018-150548/.
Texte intégralThis work investigated the influence of different solvents on the photoinduced release of carbon monoxide from the complex [Ru3O(CH3COO)6(CO)(dmpz)2] (dmpz= 2,6 dimethylpyrazine), and the solvatocromic behavior of this same complex and the analogs [Ru3O(CH3COO)6(ampy)2(CO)] (ampy = 4-aminopyridine) and [Ru3O(CH3COO)6((CO)(py)2] (py = pyridine). The complex [Ru3O(CH3COO)6(CO)(dmpz)2] was irradiated by a laser at 377 nm in hexane, dichloromethane, acetonitrile, methanol, ethanol, 1-butanol, acetone, dimethylsulfoxide, water and tris buffer (pH = 7,4).These irradiations were accompanied by spectroscopy in the UV-Vis region and the quantum yield of the photoinduced release of carbon monoxide was calculated by chemical actinometry of potassium ferroxalate. By this study, it was observed that the photoproduct depends on the solvent used, but the quantum yield of CO release did not vary significantly in the different media used, indicating a dissociative mechanism in the process. TD-DFT calculations for the aforementioned complex have shown that although the complex is neutral, its ground state is more polar than its excited state of charge transfer, however the polarity difference between the states was not considered extensive. Analysis of the solvatocromic behavior of the complexes [Ru3O(CH3COO)6(ampy)2(CO)], [Ru3O(CH3COO)6(CO)(dmpz)2] and [Ru3O(CH3COO)6(CO)(py)2] were also performed. It was observed that each compound had a different behavior, indicating the influence of the substituent groups on the terminal ligands on the properties of these compounds. The [Ru3O(CH3COO)6(ampy)2(CO)] complex exhibited bathochromic shift of the charge transfer transition (CT) with increasing solvent polarity due to the basic characteristic of the terminal ligand. It also showed dependence with the protic solvents used, due to the hydrogen bonds formed between the amine group of the ligand and the solvents, as well as preferential salvation by methanol in mixtures containing this protic solvent.The compound [Ru3O(CH3COO)6(CO)(dmpz)2], on the other hand, presented a hypochromic shift of the charge transfer band with the increase of the polarity of the solvents due to the acidic properties of the terminal ligand and no dependence on protic solvents due to the steric hindrance of the uncoordinated nitrogen of the ligand. As expected, the [Ru3O(CH3COO)(CO)(py)2] complex exhibited intermediate behavior because the ligand has an intermediate nature within the series used an does not contain any substituent groups
Jouaiti, Abdelaziz. « Activation electrochimique de petites molecules par des composes bi-metalliques et elaboration de films polymeres conducteurs ». Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13036.
Texte intégralZsoldos, Daniela. « Complexes mono et bis bipyridine carbonyle de ruthénium(II), précurseurs de polymères organométalliques : propriétés électrochimiques et applications à l'électrocatalyse de la réduction du CO2 en milieu aqueux ». Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10027.
Texte intégralBitsi, Gustave Adolphe. « Catalyse et cocatalyse de quelques reactions organiques par les composes de ruthenium ». Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13037.
Texte intégralRahmouni, Noureddine. « Synthese et reactivite de complexes dinucleaires des metaux de transition ». Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13080.
Texte intégralFRANCHI, DANIELE. « Optimization of components for Dye-Sensitized Solar Cells : a combined approach for performance improvement ». Doctoral thesis, 2017. http://hdl.handle.net/2158/1079132.
Texte intégralSun, Bian-Jian, et 孫秉建. « Reaction dynamics of the systems of carbon chain species, and pyridine formation ». Thesis, 2010. http://ndltd.ncl.edu.tw/handle/39233498896002503683.
Texte intégral國立東華大學
化學系
98
The interstellar reaction of ground-state carbon atom with the simplest polyyne, diacetylene (HCCCCH), is investigated theoretically to explore probable routes to form hydrogen-deficient carbon clusters at ultra-low temperature in cold molecular clouds. The isomerization and dissociation channels for each of the three collision complexes are characterized by utilizing the unrestricted B3LYP/6-311G(d,p) level of theory and the CCSD(T)/cc-pVTZ calculations. With facilitation of RRKM and variational RRKM rate constants at collision energies of 0-10 kcal/mol, the most probable paths, thus reaction mechanism, are determined. Subsequently the corresponding rate equations are solved that the evolutions of concentrations of collision complexes, intermediates, and products versus time are obtained. As a result, the final products and yields are identified. This study predicts that three collision complexes, c1, c2, and c3, would produce a single final product, 2,4-pentadiynylidyne, HCCCCC(X2Π), C5H (p1) + H, via the most stable intermediate, carbon chain HC5H (i4). Our investigation indicates the title reaction is efficient to form astronomically observed 2,4-pentadiynylidyne in cold molecular clouds, where a typical translational temperature is 10 K, via a single, bimolecular gas phase reaction.
Hong, Xiu-Xuan, et 洪秀萱. « Thermal and Photochemical Reactions of Pyridine-3-Carbonyl Azide on a Cu(100) Surface ». Thesis, 2019. http://ndltd.ncl.edu.tw/handle/9f2y77.
Texte intégral國立中山大學
化學系研究所
107
The thermochemical and photochemical reactions of pyridine-3-carbonyl azide (Py-C(=O)N3) on Cu(100) have been studied in ultrahigh vacuum by reflection-absorption infrared spectroscopy and temperature-programmed desorption. Unexpectedly, the classical thermal-Curtius rearrangement of acyl azide was not observed in this work. Instead, after rupturing the N-N2 bond upon heating, an oxazirene-like structure, the resonance form of acylnitrene, led to coadsorbed pyridine-3-cyanate (Py-OCN) and pyridine-3-nitrile N-oxide (Py-CNO) intermediates which are substantiated by DFT calculations. The endproduct was 3-pyridinecarbonitrile (Py-CN) confirmed by TPD and IR spectrum. However, only by UV photoirradiation can the Curtius rearrangement product, pyridine-3-isocyanate (Py-NCO), be generated. The photolysis reaction was incomplete; therefore, the remaining unreacted azido species proceeded via the thermochemical pathway to produce Py-CN. Furthermore, RAIRS data showed no evidence for the presence of an acylnitrene (Py-C(=O)N) intermediate, suggesting that the surface photo-Curtius reaction is concerted.
« (Pyrazolylpyridine)- iron, cobalt and nickel complexes as carbon-carbon bond formation catalysts ». Thesis, 2011. http://hdl.handle.net/10210/3642.
Texte intégral2-(Pyrazol-1-ylmethyl)pyridine ligands were synthesised by phase transfer alkylation of 2-picolyl hydrochloride with the appropriate pyrazole. These ligands were subsequently reacted with NiCl2, NiBr2, FeCl2 or CoCl2 to form the respective complexes. The substituents on the pyrazole included phenyl and tert-butyl groups as well as electron withdrawing CF3 groups. The substituents played an important role in the steric and electrophilic nature of the metals. A second ligand design is 2,6-bis(pyrazol-1-ylmethyl)pyridine and were prepared by phase transfer alkylation of 2,6-bis(chloromethyl)pyridine with two mole equivalents of the appropriate pyrazole. These ligands were reacted with NiCl2, NiBr2, FeCl2 or CoCl2 to form the respective complexes. A third ligand design is 2-(chloromethyl)- or 2-(bromomethyl)-6-(pyrazol-1-ylmethyl)pyridine and were prepared by the selective alkylation of 2,6-bis(chloromethyl)pyridine with one mole equivalent of the appropriate pyrazole. These ligands were also reacted with NiCl2, NiBr2, FeCl2 or CoCl2 to form the respective complexes. Characterisation of all compounds was done by a range of spectroscopic techniques as well as X-ray crystallography and elemental analysis. The data showed good fit to the proposed structures and in a few cases were confirmed by X-Ray crystallography. All complexes were tested as catalysts for ethylene and higher olefin oligomerisation and showed good activity. The production of alkenes were confirmed in toluene and hexane, however, due to the use of EtAlCl2 and toluene the oligomers were alkylated to form the Friedel-Crafts alkylation products. Similar alkylation was observed for the higher olefin reactions. In comparison, the same reactions in hexane resulted in only C4, C6 and C8 oligomers. When higher olefin reactions were also conducted in hexane, polymeric solids were observed.
Zhuang, Xin-Yi, et 莊新毅. « Synthesis of Benzo[4,5]imidazo[1,2-a]pyridine and its derivatives by intermolecular carbon-nitrogen bond coupling reaction between aniline and pyridine induced by different aromatic substituted hypervalent iodine reagents ». Thesis, 2019. http://ndltd.ncl.edu.tw/handle/ncwgwy.
Texte intégral國立中山大學
化學系研究所
107
In this thesis, we have successfully found two types of highpervalent iodine reagents with different substituent groups: (4-methoxyphenyl)- λ3-iodanediyl diacetate and (4-methoxyphenyl)- λ3-iodanediyl diacetate, increasing the yield of the production of benzo[4,5]imidazo[1,2-a]pyridines with aniline derivatives and pyridine derivatives as starting materials. In this thesis, we have successfully found two types of highpervalent iodine reagents with different substituent groups: (4-methoxyphenyl)- λ3-iodanediyl diacetate and (4-methoxyphenyl)- λ3-iodanediyl diacetate, increasing the yield of the production of benzo[4,5]imidazo[1,2-a]pyridines with aniline derivatives and pyridine derivatives as starting materials. Compounds with benzo[4,5]imidazo[1,2-a]pyridine skeletons are compound is obtained, and the yields are between 50% and 80%. Furthermore, the structures of two products and highpervalent iodine reagents are provided. The structures are confirmed by the x-ray single crystal diffraction technique, and are also promising in the pharmaceutical industry. Therefore, we also hope we are able to rapidly produce the compounds possessing this structure with the facile synthetic strategy herein.
He, Haoze. « Synthesis, Characterization and Application of Poly (Styrene-4- Vinyl Pyridine) Membranes Assembled With Single-Wall Carbon Nanotubes ». Thesis, 2011. http://hdl.handle.net/10754/209398.
Texte intégralLin, Pi-shan, et 林碧珊. « Palladium(II)-Catalyzed Synthesis of 2-(Biphenyl-2-yloxy)pyridines and N-Pyridylcarbazoles via Carbon-Hydrogen Bond Activation ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/60529171183590090694.
Texte intégral國立中山大學
化學系研究所
99
This thesis is composed of two parts. The palladium-catalysted synthesis of 2-arylphenols and carbazoles via carbon-hydrogen (C-H) bond activation is described. Treatment of 2-phenoxypyridines with two and a half equivalents of potassium aryltrifluoroborate and 10 mol % of Pd(OAc)2 in the presence of two equivalents of Ag2CO3, one equivalent of p-benzoquinone (BQ), and four equivalents of DMSO with (or without) H2O at 130-140 oC for 48 h in dried CH2Cl2 gave the ortho-arylated 2-phenoxypyridines in modest to excellent yields. The investigation of kinetic isotope effect (kH/kD) is determined to be 5.25, which indicates that C-H bond cleavage occurs in the rate-determining step. 2-(Biphenyl-2-yloxy)pyridines was treated with methyl trifluoromethanesulfonate and subsequently sodium methoxide to give the 2-arylphenols to demonstrate the pyridine is a removable directing group. On the other hand, a novel one-pot synthesis for N-pyridylcarbazoles by the reaction of N-phenylpyridin-2-amines with potassium aryltrifluoroborates using Pd(OAc)2 as the catalyst is presented. For instance, reaction of N-phenylpyridin-2-amines with four equivalents of potassium aryltrifluoroborate under the optimal reaction condition gave N-pyridylcarbazoles in 67% yield along with N-(biphenyl-2-yl)pyridin-2-amine in 13% yield. The investigation of kinetic isotope effect (kH/kD) for first C-H bond activation/C-C bond formation step is determined to be 2.14, and that of the second C-H bond activation/C-N bond formation steps is 1.18. On the basis of KIE analysis, it might indicate that first C-H activation undergo direct C-H bond cleacage, and second step should be via electrophilic aromatic substitution.
林榮安. « The study of synthesis and formulation of ([[[4-amino carbonyl)pyridino]methoxy]-methyl]-2-[[hydroxy imino]methyl]-pyridinium dichloride,HI-6 ». Thesis, 1991. http://ndltd.ncl.edu.tw/handle/33948208987695209959.
Texte intégralFang, Yung-Cheng, et 方勇程. « (a)Structures and Calculations of New Fluoro-ponytailed Pyridines and Their Trans Palladium Halide Complexes (b)Calculations of Fluoro-containing Compounds and Research of Carbon-deuterium Stretching ». Thesis, 2017. http://ndltd.ncl.edu.tw/handle/bdwzq3.
Texte intégral國立臺北科技大學
有機高分子研究所
105
B. Calculations of Fluoro-containing Compounds and Research of Carbon-deuterium Stretching. Since the structure obtained by X-ray diffraction has a bigger deviation on the bond length, the optimized structure of the compound is calculated by the method of density functional theory (DFT) using the theoretical calculation method. With the vibration spectrum, and with the IR spectrum of the experimental data, assigned each signal represents the vibration mode. We also tried to replace some of the hydrogen atom the fluorine-containing pyridine with a deuterium atom to help us assign the vibrational mode by considering the displacement of the signals.