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Dissertations / Theses on the topic 'Dithane'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Williams, Nadia. "An investigation into the parameters affecting the stability of Dithane." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/645.

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Plant diseases caused by fungi are the number one cause of crop loss worldwide. The application of a fungicide which is a toxic substance applied either to prevent the growth of, or to kill fungi is one of the methods by which plant diseases are controlled. Ethylenebisdithiocarbamate fungicides are a group of surface acting fungicides which control a broad spectrum of fungi and their associated plant diseases. Mancozeb, also commonly known as Dithane, falls under the polymeric Dithiocarbamate fungicides which have several sites of toxicity to the fungal cell. The use of Mancozeb as a fungicide

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2

Klair, Sukhbinder S. "Stereoselective enolate alkylation of acyl dithiane oxides." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314512.

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3

Allin, Steven M. "Applications of 1,3-dithiane 1-oxide asymmetric building block." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357285.

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4

Westwood, Donald. "An approach to asymmetric synthesis using 1,3-dithiane derivatives." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316685.

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5

Milsom, Greig. "Synthetic approaches to the asymmetric synthesis of #alpha#-keto and #beta#-hydroxy esters." Thesis, Kingston University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285949.

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6

Franklin, Richard. "Trans-1,3-dithiane-1,3-dioxide, a chiral carbonyl anion equivalent." Thesis, University of Bath, 1993. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357289.

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7

Prodger, Jeremy C. "Stereoselective reactions controlled by the 1,3-dithiane 1-oxide building block." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291877.

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8

Purdie, Mark. "Stereoselective control by the 1,3-dithiane 1-oxide asymmetric building block." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262490.

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9

Wilkes, Robin David. "The preparation and applications of optically enriched 1,3-dithiane 1-oxides." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240840.

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10

Millar, Andrea P. "Synthetic applications of, and biological approaches to 1,3-dithiane 1-oxides." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365907.

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11

Gold, J. B. "Development of a dithiane-Julia olefination reaction : towards the synthesis of callipeltoside A." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599468.

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This doctoral thesis is divided into three sections: Part A, Part B and Part C. Part A is subdivided further into three chapters. In the first of these, an overview of the Julia olefination reaction process as well as its variants is provided, followed by a short description of the application of dithiane methodology in natural product synthesis. The second chapter describes the development of a new methodology based on Julia olefination of substrates derived from dithiane and dithiolane sulfones. Summary and conclusions then follow in chapter three. Part B of this thesis is also subdivided in

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12

McKenzie, Michael J. "Applications of the 1,3-dithiane 1-oxide chiral auxiliary and asymmetric building block." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364159.

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13

Parente, Marcelo. "Estudo eletroquímico da adsorção de moléculas organosulfuradas sobre superfície de ouro." reponame:Repositório Institucional da UFC, 2006. http://www.repositorio.ufc.br/handle/riufc/2075.

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PARENTE, Marcelo Valente. Estudo eletroquímico da adsorção de moléculas organosulfuradas sobre superfície de ouro. 2006. 96 f. Tese (Doutorado em Química Inorgânica) – Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2006.<br>Submitted by irlana araujo (irlanaaraujo@gmail.com) on 2011-12-29T13:52:25Z No. of bitstreams: 1 2006_tes_Mar Araujo.pdf: 1449434 bytes, checksum: 32dcd49372c754f4a613c3064f4fa5e0 (MD5)<br>Approved for entry into archive by Aline Nascimento(vieiraaline@yahoo.com.br) on 2012-02-14T14:26:06Z (GMT) No. of bitstreams: 1 2006_tes_Mar Araujo.pdf: 1449434 bytes, che

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14

Rival, Nicolas. "Vers la synthèse totale de l'amphidinol 3 : contrôle de la stéréoséquence C20-C27." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00832516.

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Les amphidinols sont une nouvelle classe de molécules naturelles de type polycétide dont l'amphidinol-3 est la seule molécule possédant sa structure entièrement établie. L'amphidinol-3 exhibe les meilleures activités biologiques de cette famille, principalement antifongique ethémolytique. La synthèse du fragment C17-C30 a été le premier objectif de ces travaux de thèse. Cette synthèse est basée sur l'utilisation du para-tolylsulfoxyde comme auxiliaire de chiralité et d'un bromoallylsilane comme corps central. Tous les centres asymétriques sont contrôlés avec de très hauts rapports diastéréomér

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15

Sneddon, Helen Fiona. "The application of β-keto dithianes in natural product synthesis". Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614836.

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16

CABRAL, Wanessa Botelho Marques. "Análise da genotoxidade in vivo dos agrotóxicos ciromazina e mancozeb em baixas doses." Universidade Federal de Pernambuco, 2014. https://repositorio.ufpe.br/handle/123456789/13026.

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Submitted by Daniella Sodre (daniella.sodre@ufpe.br) on 2015-04-13T13:41:14Z No. of bitstreams: 2 DISSERTAÇÃO Wanessa Botelho Cabral.pdf: 1347764 bytes, checksum: e922b207be73f5f6dd67b374c36e0e16 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5)<br>Made available in DSpace on 2015-04-13T13:41:14Z (GMT). No. of bitstreams: 2 DISSERTAÇÃO Wanessa Botelho Cabral.pdf: 1347764 bytes, checksum: e922b207be73f5f6dd67b374c36e0e16 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2014-01-22<br>CAPES; CNPq<br>Os agrot

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17

Shuttleworth, Stephen Joseph. "Approaches to the asymmetric synthesis of substituted carbocycles using the 1,3-dithiane 1-oxide (DiTOX) building block." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241457.

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18

Spracklin, Douglas Kenneth. "Synthesis and conformational studies of 11-(1,3-Dithian-2-YL)-13-tetradecanolide." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27636.

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11-(1,3-Dithian-2-yl)-13-tetradecanolide (71) was synthesized in a ten step sequence in approximately 3% overall yield. Alkylation of this compound with methyl iodide yielded a 6:1 mixture of diastereomers 72 and 73, the major isomer being 72. The stereochemistry at C-2 of these compounds was determined by their conversion to 74 and 75. respectively, whose stereochemistry was known. Results of molecular mechanics calculations suggest that the alkylation reaction proceeds through either of the low energy [3335] or [3344] conformations, both of which give rise to the observed product ratio.[Se

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19

Lay, Alexander Kit. "New π-electron donor systems based on 1,4-dithin derivatives". Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4725/.

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A review of organic, π-electron donor molecules is given. The focus is on non- tetrathiafulvalene based systems. Polycyclic arenes, thioalkyl substituted arenes, chalcogenated fulvalenes, peri-dichalcogen bridged polycyclic arenes and heteroarenes are covered. Various π-electron donor molecules based on acenaphtho[ 1,2-b][ 1,4]-dithin have been synthesised via various methodologies. The redox properties of these molecules, as studied by cyclic voltammetry, provide evidence that these species are efficient π-electron donors. A selection of these compounds have also been studied by Electron Spin

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20

Parente, Marcelo Monteiro Valente. "Estudo eletroquÃmico da adsorÃÃo de molÃculas organosulfuradas sobre superfÃcie de ouro." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1397.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>SuperfÃcie de ouro modificada com as espÃcies 1,4-ditiano (1,4-dt) e 4- mercaptopiridina (pyS), foram estudadas neste trabalho. Para a realizaÃÃo desse estudo foram utilizadas as seguintes tÃcnicas eletroquÃmicas: polarizaÃÃo linear com eletrodo de disco rotatÃrio, voltametria cÃclica, voltametria de pulso diferencial, impedÃncia eletro-hidrodinÃmica e espectroscopia de impedÃncia eletroquÃmica. Outras tÃcnicas tambÃm deram suporte, tais como, microscopia de forÃa atÃmica (MFA), microscopia de superfÃcie por tunelamento (MST), espe

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21

Zamora, Blanca N. Esquivel. "Trans-1,3-dithiane-1,3-dioxide as a chiral acyl anion equivalent and application in the synthesis of (R)-(-)-salbutamol." Thesis, University of Bristol, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398773.

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22

Imqilqane, Noureddine. "Approche de synthèse du sesbanimide A." Paris 11, 1988. http://www.theses.fr/1988PA112186.

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Cette thèse porte sur l'étude de la synthèse des éléments C et B du Sesbanimide A. L'approche de synthèse que nous avons adoptée, consiste à prendre un sucre en C-4, représentant les carbones 4, 7, 8 et 9 du sesbanimide A à effectuer une condensation entre le carbone 9 et l'anion α des atomes de soufre du dithiannyl-3 méthylène-2 butanol-1 représentant les cycle C. Le produit de la condensation présente les carbones 4 et 7 à 13puis 15 et 16 du Sesbanimide A.

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23

Hammaecher, Catherine. "Acylsilanes et Bis(acyl)silanes : nouvelles méthodologies de synthèse et nouvelles réactivités." Reims, 2007. http://theses.univ-reims.fr/exl-doc/GED00000726.pdf.

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Les acylsilanes sont les composés «acyl-métal» présentant la chimie la plus diversifiée. Cette thèse porte d'une part sur de nouvelles synthèses (méthodes et produits) d'acylsilanes, d'autre part sur l'étude de leur réactivité. Plus particulièrement, des allyl- et vinyl(acyl)silanes et des bis(acylsilanes) à silicium internes étaient ciblés. Une synthèse basée sur l'hydrolyse d'éthers d'énol ou d'ènethiol C-silylés s'est révélée peu performante pour des bis(acylsilanes), mais apporte une contribution originale à la panoplie des méthodes de synthèse d'acylsilanes. Deux méthodes ont été étudiées

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24

Vakalopoulos, Alexandros. "Asymmetrische Fragmentsynthesen des Bryostatins (C1 - C16 und C19 - C27), Pederins (C10 - C17), Leucascandrolids (C1 - C9), Hennoxazols (C2 - C8) und Macrolactins (C11 - C17) neuartige Entschützungsmethoden von SEM-Ethern und Dithianen /." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=959606416.

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25

DAO, VI THUY. "Le Gossypol et ses nouveaux dérivés:Synthèse et étude d'Activités Biologiques." Phd thesis, Université Paris Sud - Paris XI, 2002. http://tel.archives-ouvertes.fr/tel-00004168.

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Plusieurs molécules nouvelles ont été obtenues à partir du Gossypol, extrait des graines de cotonnier. Dans la première partie, de nouvelles bases de Schiff du gossypol et de la gossypolone ont été synthétisées, les énantiomères du gossypol et leurs bases de Schiff sont optiquement stables, tandis que, les énantiomères de la gossypolone ne sont pas stables à température ambiante, mais il est possible de les observer vers 0°C. La cytotoxicité de ces bases de Schiff a été évaluée principalement sur des cellules KB, la méthylimine et l'éthylimine de la gossypolone sont les plus toxiques (IC50= 0.

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26

Soules, Régis. "Proprietes cooperatives de complexes polymetalliques des ligands squarate et thiosquarate." Toulouse 3, 1987. http://www.theses.fr/1987TOU30178.

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Etude de l'emploi d'un coordinat assembleur qui puisse par coordination avec le centre metallique utilise (metaux de transition du groupe viii) aboutir a un agencement a une dimension des motifs moleculaires par empilement d'entites monomeres ou par formation de chaines. Par utilisation du coordinat squarate sous ses formes oxygenees et soufrees, obtention d'un certain nombre de complexes de pt, pd, ni et cu repondant aux criteres fixes. Etude des structures de ces composes, de leurs proprietes physiques et de la relation structure-propriete. La nature du coordinat comme le caractere specifiqu

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27

Lespinasse, Anne-Dominique. "Voies d’accès à des dérives aminés du D-fructofuranose et du D-psicofuranose." Lyon, INSA, 1985. http://www.theses.fr/1985ISAL0057.

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Nos travaux s'inscrivent dans le domaine de la chimie des cétohexoses et en particulier de deux d'entre eux : le D-fructose et le D-psicose. En vue de l'évaluation des potentialités biologiques de ces oses, nous avons d'abord étudié les voies'd'accès à des nucléosides dérivés du D-fructofuranose puis la synthèse de composés aminés issus de cet ose et du D-psicofuranose. Cette approche nous a amené à mettre au point la préparation d'un dérivé du D-psicofuranose comportant une différenciation au niveau de ses deux hydroxyméthyles. Ce composé devrait permettre de résoudre certains problèmes synth

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28

Zápalková, Marcela. "Testování metod účinnosti ochranných prostředků u vybraných patogenů." Master's thesis, 2008. http://www.nusl.cz/ntk/nusl-95741.

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29

"Dithai tsa sesotho sa leboa." Thesis, 2015. http://hdl.handle.net/10210/14451.

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M.A.<br>Riddles, together with other genres such as idioms, proverbs and legends, form an important and integral component of what is commonly referred to as oral literature. Riddling is a traditional game, mainly engaged in by the youth, as a positive and constructive way of whiling away time. This game is not only confined to tribes and communities in Southern Africa, but is also played throughout the African continent and also in many parts of the world ...

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30

McFarlane, Michael Thomas. "Metal-catalyzed cross-coupling reactions with dithiolanes and dithianes." 2012. http://hdl.handle.net/1993/13706.

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Creating new carbon-carbon bonds is one of the most important and challenging reactions in organic synthesis. Metal-catalyzed cross-coupling reactions have emerged as one of the preferred methods of producing new carbon-carbon bonds, and this work led to the 2010 Nobel Prize in Chemistry. This thesis was aimed at expanding the current research in the area of metal-catalyzed cross-coupling reactions to include new applications with dithiolane and dithiane protecting groups. 1,3-Dithiolane and 1,3-dithiane derivatives are particularly interesting molecules in that they can be deprotonated b

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31

Yu, Jiann-Yuan, and 余建源. "Acid Catalyzed Reactions of 2-(1-Hydroxyaryl)-1,3-dithianes." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/57092676245360062560.

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32

Cludius-Brandt, Stephan [Verfasser]. "Untersuchung neuer Umlagerungs-, Spaltungs- und Homologisierungsreaktionen von 1,3-Dithianen und 1,3-Dithianmonosulfoxiden / von Stephan Cludius-Brandt." 2010. http://d-nb.info/1007945567/34.

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33

Tsegaye, Abebaw Adgo. "Electropolymerization and electrochromism of poly(4,7-dithien-2-yl-2,1,3-benzothiadiazole) and its copolymer with 3-methoxythiophene in ionic liquids." 2013. http://hdl.handle.net/11394/3836.

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Philosophiae Doctor - PhD<br>This thesis is based on the study of electropolymerization and electrochromism of poly(4,7- dithien-2-yl-2,1,3-benzothiadiazole) (P(DTBT) and its copolymer with 3-methoxythiophene (MOT) in imidazolium ionic liquids (ILs) 1-butyl-3-methylimidazolium tetrafluoroborate (bmimbf4) hydrophilic, 1-butyl-3-methylimidazolium hexafluorophosphate (bmimpf6) and 1- butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (bmimtnf2) hydrophobic ILs. Traditional organic solvents acetonitrile and dichloromethane in the presence of 0.1 M tetrabutylammonium perchlorate (n-Bu4NClO

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34

Chen, Bi-Ling, та 陳碧琳. "Nickel-Catalyzed Cross-Coupling Reactions of 1,3-Dithianes with Grignard Reagents : The Study of β-OR and β-SR Group Elimination". Thesis, 1993. http://ndltd.ncl.edu.tw/handle/70462465511396370072.

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碩士<br>國立臺灣大學<br>化學學系<br>81<br>The NiCl2(PPh3)2 catalyzed cross-coupling reactions of Grignard eagents with dithianes having β-OR or β-SR group at C2 positionead to the regioselective formation of the double bond via β-ORr β-SR elimination process. The rate of β- OR or β-SRlimination appears to be faster than the rates of cyclopropyling opening rearrangement and β-hydride elimination. Variousvidences suggest that the reaction may proceed via orangonickelntermediate from

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35

Dithipe, Ntshadi Juvenile. "The study of the psychosocial effects and coping mechanisms of Black widows in the Mafikeng area (North West Province) following the death of their spouses / Ntshadi Juvenile Dithipe." Thesis, 2005. http://hdl.handle.net/10394/11482.

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This study focused on the psychosocial effects and coping mechanisms of black widows in the Mafikeng area following the death of their spouses. A descriptive research design was used in collecting data. A sample of forty-eight black widows aged between twenty-five and seventy years was randomly selected for the purpose of this study. A questionnaire was administered to the sample. This questionnaire contained both open-ended and close-ended questions. Beck's Depression Inventory was also used in the collection of data to assess the level of depression if any. A descriptive statistical analysis

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36

Vakalopoulos, Alexandros [Verfasser]. "Asymmetrische Fragmentsynthesen des Bryostatins (C1 - C16 und C19 - C27), Pederins (C10 - C17), Leucascandrolids (C1 - C9), Hennoxazols (C2 - C8) und Macrolactins (C11 - C17) : neuartige Entschützungsmethoden von SEM-Ethern und Dithianen / von Alexandros Vakalopoulos." 2000. http://d-nb.info/959606416/34.

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Kloppers, Daniel Frederik. "Implementeringsraamwerk vir ŉ heelskoolbenadering teen skoolgeweld gegrond op geïntegreerde helende onderwys." Thesis, 2021. http://hdl.handle.net/10500/27887.

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Abstracts in Afrikaans, English and Southern Sotho<br>Geweld en skoolgeweld veroorsaak ernstige maatskaplike ontwrigting in Suid-Afrika. Die metodes waarmee skoolgeweld tans hanteer word, is oneffektief en meestal op mag en dissipline gegrond. Die doel van hierdie navorsing is om alternatiewe benaderings vir die hantering van skoolgeweld te ondersoek en om ŉ implementeringsraamwerk vir ŉ heelskoolbenadering teen skoolgeweld te ontwikkel. Ten einde hierdie doel te bereik, fokus die navorsing, wat binne ŉ aangepaste ekologiese model (AEM) onderneem is, op ŉ konseptuele analise van die aard

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