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Tesi sul tema "Azo compounds"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Iannarelli, Paul M. "Routes to novel azo compounds." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/3492.

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Routes to novel heterocyclic azo compounds and components of use as potential inkjet dyes were investigated. A new route to fluorenones from biphenyl acid chlorides using FVP (Flash Vacuum Pyrolysis) has been discovered. Fluorenone and 4-methylfluoren-9-one were prepared by FVP of 2-phenylbenzoyl chloride and 2-methylbiphenyl-2-carbonyl chloride respectively. Xanthen-9-one and thioxanthen-9-one were also prepared by FVP from the corresponding acid chlorides. 9-Phenanthrol could also be prepared via the FVP of biphenylacetyl choride and the application of this method to a heterocylic thiophene

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2

Newington, Ian M. "Azo-anions in organic synthesis." Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:690ab891-be13-4582-a029-47974d20adac.

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Novel synthetic applications of ambident azo-anions derived from hindered hydrazones have been investigated. Reaction with electrophiles occurred predominantly at carbon as the N-addition pathway was sterically retarded. Trityl, diphenyl-4-pyridylmethyl (DPP) benzhydryl, and t-butyldiphenylmethyl (BDP) hydrazones of various aldehydes and ketones were prepared in good yields from the corresponding hydrazines and carbonyls in aqueous methanol. The lithium salts derived from trityl and DPP hydrazones, by treatment with methyl lithium at -55°C, reacted with aldehydes and ketones to generate azo-al

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3

MacDonald, Ranald John. "Novel routes to heterocyclic Azo compounds." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/5787.

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The potential use of electron-deficient heterocyclic azo compounds as inkjet dyes was explored. 2-Nitrosopyridine could be used to form a series of azo compounds via the Mills’ reaction with electron-rich aromatic amines. Conditions for this process were optimised by varying solvent and pH. In the presence of ethers, 2-nitrosopyridine is quickly reduced to azoxypyridine. This reaction follows first order kinetics; diethyl and diisopropyl ether react at similar rates, whereas cyclic ethers such as THF are far slower. Organic bases such as Hunigs base were also found to promote formation of azox

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4

江鳳思 and Fung-sze Kong. "The chemistry of Osmium carbonyl clusters containing organomercurials and azo-compounds." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31238695.

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5

Kong, Fung-sze. "The chemistry of Osmium carbonyl clusters containing organomercurials and azo-compounds /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21021545.

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6

Clarke, Ronald James. "Kinetic and equilibrium studies of cyclodextrin-azo dye inclusion complexes /." Title page, contents and abstract only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phc5992.pdf.

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Thesis (Ph. D.)--University of Adelaide, Dept. of Physical and Inorganic Chemistry, 1985.<br>Offprints of two author's journal articles inserted at end of the v. Includes bibliographical references (leaves 10-12).

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7

McNair, Craig. "Synthetic approaches to substituted Ca4B-type azo compounds." Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366902.

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8

Shahkar, G. R. "Thermal decomposition of azo compounds in the gas phase." Thesis, Swansea University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638804.

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9

West, Lee Charles. "A study of bibracchial lariat ether complexes and linked cyclodextrin dimer complexes." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phw5182.pdf.

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Includes errata attached to first leaf. Includes bibliographical references. The complexation of a range of monovalent and divalent metal ions by the bibracchial lariat ethers has been investigated. Also investigates the complexation of metal ions and the anionic azo dye Brilliant Yellow by the diazacrown linked cyclodextrin dimers.

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10

Hywel, Meilir. "Laser control of the photoisomerisation of azo-compounds : a theoretical study." Thesis, Bangor University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520068.

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11

Haria, Mehul. "Design, synthesis, and optical characterization of a novel, biocompatible azo-polymer." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101850.

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The goal of this thesis was to create a novel stable water-soluble azo polymer with photoswitchable properties, which was to be used as a scaffold in directing neuron growth. The new polymer, PDR2, was synthesized and extensively characterized to understand its physical and chemical properties, as well as to ascertain the structure. Characterization techniques included nuclear magnetic resonance, thermogravimetric analysis, differential scanning calorimetry, absorption spectroscopy, and ellipsometry. The photoresponsive properties of the polymer were then studied by examining quantum yields an

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12

Ye, Jianchang. "Roles of graphite in the reduction of azo-aromatic compounds with elemental iron." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 137 p, 2006. http://proquest.umi.com/pqdweb?did=1172118261&sid=5&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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13

Akwi, Faith Mary. "Scalable chemistry involving diazonium salts." Thesis, Nelson Mandela Metropolitan University, 2016. http://hdl.handle.net/10948/6909.

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Herein an alternative approach aimed at reducing the cost of numbering up technique as a scale up strategy for chemical processes from the laboratory bench top to the industry is explored. The effect of increasing channel size on the reaction conversion of the synthesis of azo compounds is investigated. This was achieved via a systematic investigative understanding of the synthesis in microreactors where a proof of concept study was performed to determine the optimum reaction parameters in azo coupling reactions involving couplers with aminated or hydroxylated groups in Little Things Factory-M

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14

Kneller, Mark Byron. "Controlling peptide conformations : stabilizing helices /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/8531.

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15

Choi, Ming Fai. "Design and synthesis of coordination polymer gels and high dichroic ratio azo dyes /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202002%20CHOI.

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16

Simmonds, Michelle. "The reactions of some simple ester-substituted radicals in solution." Thesis, University of York, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387620.

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17

Wallace, Trevor Haig. "Biological Treatment of a Synthetic Dye Water and an Industrial Textile Wastewater Containing Azo Dye Compounds." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34115.

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In this research, the ability of anaerobic and aerobic biological sludges to reduce and stabilize azo dye compounds was studied. Synthetic dye solutions and an industrial textile wastewater were both treated using anaerobic and aerobic biomass, separately and in sequential step-treatment processes. The primary objective was to reduce the wastewater color to an intensity that complies with the Virginia Pollutant Discharge Elimination System (VPDES) permit level. This level is set at 300 American Dye Manufactures Institute (ADMI) units. Further objectives were to achieve reductions in the to

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18

Czerniewski, Alexandre Adam. "Development and characterization of novel nitric oxide-releasing probes for magnetic resonance imaging." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112393.

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While providing non-invasive tissue detection, magnetic resonance imaging (MRI) presently possesses limited sensitivity for protein target recognition. This limitation was addressed for the target beta-galactosidase (beta-gal) by constructing three beta-gal-specific MRI probes. The probes are based on a bipartite design in which a vasoactive moiety known as a diazeniumdiolate (NONOate) is bound to a specifier, specifically galactose. Upon galactose' interaction with beta-gal, the NONOate is cleaved from galactose, and actively generates nitric oxide (NO). The released NO leads to microvascular

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19

Ozkan, Yucel Umay G. "Co-treatment Of Hazardous Compounds In Anaerobic Sewage Sludge Digesters." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609952/index.pdf.

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Xenobiotic compounds, which are exclusively man made, are produced in large quantities every year and released to the environment. Besides, anaerobic sludge digestion offers advantage in co-treatment of hazardous substances produced by the industry. The performance of the digesters can be monitored by modeling efforts. In this study, Anaerobic Digestion Model No.1 (ADM1) was calibrated, and validated for full-scale digester, lab-scale digester, and lab-scale digester seeded with totally different anaerobic biomass than that of full-scale digester. The model xenobiotic compound, a mono azo dye

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20

Palacios, Sara. "Decolourization of azo and anthraquinone dyes by mean of microorganisms growing on wood chips." Thesis, Växjö University, School of Technology and Design, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5168.

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<p>Reactive Black 5 and Procion Red MX 5B, an azo and anthraquinone dye repectively were decoulorized by mean of microorganisms growing on wood chips. The process consisted of three reactors, two anaerobic reactors and one aerobic reactor. The anaerobic process was used in order to make it possible to break the nitrogen bond of the azo group, (-N=N-) and the aerobic one to increase the possibility for the degradation of possible intermediates. After pumping wastewater through the system it was shown that mixtures or Reactive Black 5 and Procion Red MX 5B were efficiently decolourised at 50 mg/

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21

Neves, Ubaldo Martins das. "Estudo e aplicações do fenômeno de absorção de dois fótons em moléculas azo-aromáticas." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-18022011-083247/.

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Neste trabalho estudamos o processo de absorção de dois fótons em compostos azoaromáticos, abordando tanto aspectos fundamentais quanto aplicados. Moléculas azo-aromáticos têm recebido especial atenção nos últimos anos devido as suas potencias aplicações em dispositivos para armazenamento óptico de informação, modulação da luz e geração de relevos em superfície, processes estes associados ao mecanismo de foto isomerização. Os trabalhos apresentados nessa tese tiveram como principal foco explorar o fenômeno de absorção de dois fótons, utilizando a propriedade de foto-isomerização das moléculas

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22

Lai, Joshua. "Synthesis and characterization of Prussian red derived microparticles for the heterogeneous photo-fenton oxidation of azo-type textile dyes as pollutants." HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/886.

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Inorganic colloidal synthesis, without a doubt, lies at the foundation of many contemporary areas of nanoscience and nanotechnology. At the advent of the 21st century, much progress has been made in the size, shape / morphological control and surface engineering of metal oxides resulting in a diverse library of macroscopic crystal architectures with well-defined surface properties. In this thesis, we start by introducing the self-assembly of the iron(oxy-, hydro-)xide while briefly reviewing some fundamental concepts of solid-state chemistry. Specific information on the family of iron oxide an

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23

Pereira, Fernanda Stuani [UNESP]. "Estudos de biopolímeros a base de quitina e quitosana quimicamente transformados para quelação de metais e para a captura e fixação de dióxido de carbono." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/139534.

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Submitted by Fernanda Stuani Pereira null (ferstuani@hotmail.com) on 2016-06-22T22:22:49Z No. of bitstreams: 1 Tese-FERNANDA STUANI PEREIRA.pdf: 6105856 bytes, checksum: 653cf59956934017da496664aa74e886 (MD5)<br>Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-06-24T17:11:14Z (GMT) No. of bitstreams: 1 pereira_fs_dr_prud.pdf: 6105856 bytes, checksum: 653cf59956934017da496664aa74e886 (MD5)<br>Made available in DSpace on 2016-06-24T17:11:14Z (GMT). No. of bitstreams: 1 pereira_fs_dr_prud.pdf: 6105856 bytes, checksum: 653cf59956934017da496664aa74e88

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24

Bagul, T. D. "Stereoselective synthesis of epibatidine and related compounds employing [3+2] cycloaddition of non-stabilized azo-methine ylide as a key step." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1998. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3401.

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25

Brown, Erin. "Modulation of intracellular GSH in THP-1 cells during oxidative stress induced by AAPH." Thesis, University of Canterbury. School of Biological Sciences, 2006. http://hdl.handle.net/10092/2629.

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The human monocyte-derived THP-1 cell line was incubated with 10mM AAPH in Earle’s Balanced Salt Solution at 37°C for up to 24 hours. Protein hydroperoxide formation occurred after an 8 hour lag phase which corresponded to glutathione loss observed in the cells. SDS-Page analysis confirmed protein degradation occurred after 6 hours. Cell viability measured by the MTT reduction assay also dropped after 8 hours. Reduction of intracellular glutathione levels using BSO caused reduction of the lag phase seen in protein hydroperoxide formation. Cell viability of BSO-treated cells was lower than cont

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26

Mohamed, Elham Farouk. "Removal of organic compounds from water by adsorption and photocatalytic oxidation." Thesis, Toulouse, INPT, 2011. http://www.theses.fr/2011INPT0036/document.

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Les effluents industriels sont constitués de molécules de natures très diverses, plus ou moins réfractaires aux classiques traitements biologiques. Les normes de rejets évoluant régulièrement vers des contraintes de plus en plus sévères, il semble aujourd'hui nécessaire de proposer des solutions complémentaires pour atteindre de hauts rendements d'épuration. Le premier procédé mis en oeuvre dans ce travail est l'adsorption sur charbon actif. Le caractère novateur de cette technique se situe dans l'utilisation de charbons actifs fabriqués à partir de boues de stations d'épuration d'eaux usées.

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27

ALCANTARA, RAQUEL R. "Síntese, caracterização, de nanomaterial zeolítico de cinzas de carvão organomodificado e aplicação como adsorvente na remediação de água contaminada por Rodamina B e Azul Direto 71." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/27960.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-10-27T12:15:25Z No. of bitstreams: 0<br>Made available in DSpace on 2017-10-27T12:15:25Z (GMT). No. of bitstreams: 0<br>A síntese de zeólitas a partir de cinzas leves e pesadas de carvão mineral foi realizada por tratamento hidrotérmico alcalino, as quais foram nomeadas ZCL e ZCP, respectivamente. As zeólitas organomodificadas ZML e ZMP foram obtidas a partir da modificação superficial de ZCL e ZCP, respectivamente, utilizando o surfactante catiônico brometo de hexadeciltrimetilamônio. A partir das soluções remanescentes

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28

Carmazen, Paula Carpes Victorio. "Investigação de lesões em DNA induzidas por produtos de redução do corante C. I. Disperse Blue 291." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/9/9141/tde-25102007-151610/.

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CI Disperse Blue 291 (CI DB 291) é um corante dinitrobromoaminoazobenzeno com atividade mutagênica para S. typhimurium, aumentada na presença de nitrorredutase, o-acetiltransferase e enzimas microssomais (S9). Neste estudo foram isolados e caracterizados quatro produtos da redução de DB 291 com ditionito de sódio (in vitro), sendo denominados 2- fenilbenzotriazóis não clorados (não-ClPBTAs). Os espectros de absorbância não apresentam o pico correspondente à ligação azo (?λ=613 nm), indicando a redução dessa ligação. Espectros de massas e 1H RMN mostram que os produtos são dois pares de t

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29

Gómez, Vallejo Vanessa. "Development of new strategies for the synthesis of radiotracers labeled with short-lived isotopes: application to 11C and 13N." Doctoral thesis, Universitat Ramon Llull, 2010. http://hdl.handle.net/10803/9301.

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S'ha desenvolupat una nova estratègia per la síntesi ràpida i eficient de L-[metil-11C]metionina basada en el captive solvent method. La reacció de L-homocisteína (dissolució bàsica en aigua/etanol 1:1) amb [11C]CH3I en un loop de HPLC va permetre la formació del radiotraçador desitjat amb elevat rendiment radioquímic (38.4 ± 4.1%) en un temps curt (< 12 min). Tots el paràmetres analítics compleixen les especificacions requerides per la versió actual de la Farmacopea Espanyola, tot i que els valors d'activitat específica obtinguts van ser relativament baixos. Degut a això, es van estudiar i qu

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30

Moreira, Juliana. "Eletrogeração de peróxido de hidrogênio (H2O2) em eletrodos de difusão gasosa (EDG) modificados com quinonas (metil-p-benzoquinona, antraquinona-2-ácido carboxílico e ácido antraflávico) e azocomposto (Sudan Red 7B)." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-14032019-100953/.

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Os processos oxidativos avançados (POA) são uma alternativa para complementar os processos clássicos de tratamento de efluentes que podem não ser eficientes para remoção de alguns tipos de poluentes como, por exemplo, os poluentes emergentes. Os POA se baseiam na geração de espécies altamente reativas (radicais hidroxila), a partir de peróxido de hidrogênio (H2O2), que oxidam os poluentes. O H2O2 pode ser eletrogerado in situ pela reação de redução de oxigênio (RRO) no meio reacional. O uso de eletrodos de difusão gasosa (EDG) altamente porosos proporciona o suprimento de oxigênio na interface

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31

Bandini, Elisa <1966&gt. "Biologically Active Compounds Via 2-Aza-1,3-Dienes." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/476/1/PhD_Thesis_BANDINI_ELISA.pdf.

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32

Bandini, Elisa <1966&gt. "Biologically Active Compounds Via 2-Aza-1,3-Dienes." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/476/.

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33

Lo, Kai-yip, and 羅啟業. "Synthesis of aza-bicyclic compounds via palladium-catalyzed cascade cyclization reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47849691.

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A palladium-catalyzed oxidative cascade cyclization reaction has been developed to prepare pyrrolizidine and indolizidine derivatives from simple aliphatic alkenyl amides 2.1ak in one step in moderate to good yields, using Pd(TFA)2 as the catalyst and molecular oxygen (1 atm) as a green oxidant. This cascade cyclization can also proceed for ring-containing unsaturated amides 2.1ln to afford azatricyclic systems. Palladium(II)-catalyzed dehydrohalogenation cascade cyclization reactions have been developed to synthesize polycyclic pyrrolizidine derivatives from iodoalkenylanilides 4.1ai

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34

Domingo, Olwen Charlotte. "Triquinylamines & aza-cage compounds as neuronal calcium flux modulators / Olwen Domingo." Thesis, North-West University, 2008. http://hdl.handle.net/10394/4001.

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The group of disorders that are generally characterised by changes in the normal function of neurons, also referred to as neurodegenerative conditions, are known to follow various underlying molecular pathways. With the pathogenesis of these molecular pathways gradually being elucidated, targets are being identified for the prevention of several diseases that involve the death of neurons. One of these molecular pathways involves the overload of neuronal cells with intracellular calcium ions. Since this may eventually lead to excitotoxicity, the block of calcium flux through the ion channels wi

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35

Olexová, Barbora. "Rozklady organických barviv metodami AOP." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216782.

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This diploma thesis is focused on the study of the influence of advanced oxidation processes on degradation of organic dyes. The field of AOP – very effective physically-chemical methods of wastewater treatment – includes application of strong oxidation agents, UV and ionizing radiation and electrical discharges. For this thesis, two of these methods were chosen – the application of oxidation agent (ozone) and UV radiation. Along with electrolysis, which is mentioned rather marginally in this thesis (it is the subject of the previous thesis), these phenomena are products of electrical discharg

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36

Matzner, Robert Allan. "Characterization of aza-arene transport in saturated porous media." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/191179.

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Several factors which affect the transport of pyridine, quinoline and acridine (aza-arenes) in saturated porous media were investigated in laboratory experiments in order to provide data for input into coupled models that may be applied to predicting the fate of these compounds in groundwater. The effect of pH and ligand type and concentration on acridine solubility was studied in a series of batch and pH-stat experiments. There was a decrease in acridine solubility below the compound's pKₐ due to acridine/ligand precipitate formation. The reaction stoichiometry and solute/sorbent interactions

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37

Gheura, Iuliana L. "Design, synthesis and evaluation of AZA-peptide epoxides as inhibitors of cysteine proteases." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/30571.

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38

Daddario, Cassie M. "Synthesis and Optoelectronic Properties of Electron Accepting Azadipyrromethene-based Compounds." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1444768936.

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39

Roberts, Craig A. "The application of tin compounds to biaryl bond formation and the AZA-[2,3]-Wittig rearrangement." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267070.

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40

Wu, Shu-Pao. "Iron-sulfur cluster biosynthesis. Iron-sulfur cluster transfer from holo ISU and ISA to apo ferredoxin." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1078866123.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xx, 161 p.; also includes graphics Includes bibliographical references (p. 153-161). Available online via OhioLINK's ETD Center

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41

Delatour, Thierry. "Mise en évidence par spectrométries optiques de formes tautomères caractéristiques d'un pyridylazo diethylaminophénol." Nancy 1, 1987. http://www.theses.fr/1987NAN10159.

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Étude des structures tautomériques du (bromo-5 pyridyl-2-azo)-2 diethylamino-5 phénol par spectrométrie ir, visible, d'émission visible et de diffusion raman de résonance. Attribution des transitions électroniques et vibrationnelles principales. Seules les structures quinoniques sont observées, la forme azo n'apparaissant pas en quantité détectable

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42

Criton, Thomas. "Systèmes polyazotés énergétiques : stratégie de synthèse, caractérisation et réactivité." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1222.

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Les hydrazines utilisées en propulsion sont aujourd’hui identifiées par la réglementation REACH comme des substances extrêmement préoccupantes (SVHC) et leur utilisation est par conséquent menacée. Les HEDM (High Energy Density Material) représentent une classe de composés à l’architecture polyazotée voire strictement azotée dont les performances énergétiques théoriques sont en rupture avec les technologies actuelles et dont la décomposition en N2 offrirait une réponse à cette règlementation. De plus, leur utilisation simplifierait la technologie des lanceurs et permettrait d’abaisser leur coû

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43

Fadelalla, Ali Mohamad Mohamad. "Manganese(iii)acetate-based Free-radical Additions Of -dicarbonyl Compounds To Bicyclic Systems." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608402/index.pdf.

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Additions of carbon-centered radicals to alkenes are useful method for cyclic compounds formation. Manganese(III)-based oxidative free-radical cyclizations, where the radicals are generated and terminated oxidatively, are established as efficient methods for the construction of cyclic molecule. Treatment of a mixture of dimedone, Mn(OAc)3, and Cu(OAc)2 in glacial acetic acid with homobenzonorbornadiene (80) (4h at 50 &amp<br>#61616<br>C) gave furan derivative (107), dihydrofuran adduct (108), in addition to rearranged product (109) as a major product. The reaction run under the same reaction

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44

Huez, Philippe. "Synthèses et analyses conformationnelles de macrocycles aza-β³-peptidiques contenant des atomes d'azote chirogéniques". Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S072/document.

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Le travail présenté dans ce mémoire est consacré à la synthèse de cycles pseudopeptidiques construits à partir d'aza-β³-aminoacides, et à la détermination des conformations adoptées par ces cycles. Le travail réalisé a permis de montrer que les cycles obtenus à 8, 16 et 24 liaisons adoptent des conformations privilégiées dans lesquelles la configuration relative des atomes d'azote chiraux est fixée en dépit du phénomène d'inversion pyramidale associé à la structure électronique de cet élément chimique, en réponse à des contraintes structurelles qui varient selon la taille du macrocycle. Ces cy

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45

Cui, Chunming. "Aluminum (I, II, III) Compounds with Multidentate Ligands: Syntheses, Reactivity, and Structures." Doctoral thesis, [S.l. : s.n.], 2001. http://webdoc.sub.gwdg.de/diss/2001/cui/cui.pdf.

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46

Mojica, Mike. "Investigation of new synthetic reactions: the synthesis of hydrazines via the Aza-Lossen rearrangement, the synthesis of carbamoyl azides from amines, and deprotection reactions using water at elevated temperatures." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51791.

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This thesis explores three rare synthetic routes: the synthesis of hydrazines via the aza-Lossen rearrangement, the synthesis of carbamoyl azides from amines, and deprotection reactions using water at elevated temperatures. The aza-Lossen reaction was found to be ideal at “infinite dilution” conditions and could be performed with both aryl and alkyl example. Carbamoyl azides could be synthesized in high yields from both aryl and alkyl amines. The carbamoyl azide reaction was found to be much more efficient with Cs (+1) present. Lastly, water at elevated temperatures conditions was efficient at

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47

Grosser, Fabiana Nogueira. "inibidores orgânicos de corrosão : estudos com compostos naturais obtidos de diversas espécies de mentas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/129769.

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O comportamento eletroquímico do aço carbono em soluções aquosas contendo KNO3 0,10 mol L-1 e soluções etanólicas contendo cloreto de tetraetilamônio 0,10 mol L-1 foi estudado na ausência e na presença de diferentes concentrações (0,50 mM a 50,0 mM) de acetato de linalila, mentol, limoneno e pulegona. Técnicas eletroquímicas como a potenciometria, varredura potenciodinâmica, cronoamperometria, curvas de Tafel e espectroscopia de impedância eletroquímica foram utilizadas a fim de compreender a interação entre os compostos orgânicos e a superfície do eletrodo. Medidas de perda de massa também fo

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48

Lorini, Alexandre. "Perfil metabolômico de folhas de cultivares de oliveiras nas diferentes estações do ano." Universidade Federal de Pelotas, 2018. http://guaiaca.ufpel.edu.br:8080/handle/prefix/4123.

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Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2018-08-13T20:01:48Z No. of bitstreams: 1 Dissertação - Alexandre Lorini - 2018.pdf: 1136141 bytes, checksum: 0d50b075e75dc60fbcb1b924ffca00c9 (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2018-08-16T20:04:18Z (GMT) No. of bitstreams: 1 Dissertação - Alexandre Lorini - 2018.pdf: 1136141 bytes, checksum: 0d50b075e75dc60fbcb1b924ffca00c9 (MD5)<br>Made available in DSpace on 2018-08-16T20:04:18Z (GMT). No. of bitstreams: 1 Dissertação - Alexandre Lorini - 2018.pdf: 1136141 bytes, checksum: 0

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Dhakal, Ram Chandra. "New Approaches To Heterocycle Synthesis: A Greener Route To Structurally Complex Protonated Azomethine Imines, And Their Use In 1,3-Dipolar Cycloadditions." ScholarWorks @ UVM, 2017. http://scholarworks.uvm.edu/graddis/777.

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1-Aza-2-azoniaallene salts are reactive intermediates that undergo [3+2] cycloaddition with many different types of multiple bonds. For the past several years, the Brewer group has studied the reactivity of these intermediates in intramolecular reactions, and have discovered that these cationic heteroallenes can react through a variety of other, mechanistically distinct, pathways to give different classes of nitrogen heterocycles. For example, prior work in the Brewer group revealed that 1-aza-2-azoniaallene salts could react in an intramolecular [4+2] cycloaddition reaction to give protonated

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50

Dias, Rafael Mafra de Paula. "Adições de aza-Michael em diazocetonas α,β-insaturadas e reações de inserção em ilídeos β-cetosulfoxônios." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/75/75133/tde-23032016-092522/.

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O trabalho de tese é dividido em dois capítulos e visou explorar a química das diazocetonas α,β-insaturadas bem como dos ilídeos β-cetosulfoxônios. No primeiro capítulo é apresentado o emprego das diazocetonas α,β-insaturadas como novos aceptores em reações de aza-Michael. A adição conjugada de aminas primárias e secundárias foi explorada, assim como o uso de aminas quirais para avaliar a versão assimétrica da reação. Além da formação desses adutos, também foram investigadas estratégias para a construção de heterocíclicos nitrogenados a partir destes ou via protocolos

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