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Dissertations / Theses on the topic 'Organic groups'

Author: Grafiati

Published: 18 May 2024

Last updated: 16 June 2025

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1

Dunlop, J. E. "Coordinated leaving groups in organic synthesis." Thesis, Bucks New University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374820.

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2

Mouselmani, Rim. "Reduction of Organic Functional Groups Using Hypophosphites." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1241/document.

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Récemment, les exigences en chimie ont évolué rapidement, car le développement durable a retenu plus d'attention. Les principes de la chimie verte ont encouragé les chimistes à développer des produits chimiques et des procédés qui réduisent ou éliminent les substances dangereuses. Les travaux de recherche décrits dans cette thèse portent sur le développement de nouveaux systèmes réducteurs en utilisant des hypophosphites comme substituts aux agents réducteurs toxiques traditionnels.Pour atteindre cet objectif, les nitriles aromatiques ont été réduits en aldéhydes correspondants par la formatio

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3

Nomura, Glenn Sterling. "Derivatives of 4-ketoperhydroazulene with bridgehead methyl groups." Diss., Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/27064.

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4

Lee, Duckhee. "The design of organosilyl groups to control organic reactions." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624740.

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5

Ahmed, K. M. "Diels-Alder reaction of quinones carrying electron-withdrawing groups." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234154.

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6

Hussain, Firasat [Verfasser]. "Hybrid organic-inorganic polyoxometalates functionalized by diorganotin groups / Firasat Hussain." Bremen : IRC-Library, Information Resource Center der Jacobs University Bremen, 2008. http://d-nb.info/1034891162/34.

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7

Longstaff, Peter A. "Novel side chain protecting groups for solid phase peptide synthesis." Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/15232.

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8

Korzycka, Karolina Anna. "Two-photon sensitive protecting groups for biological application." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:7e895ed2-04a5-4c0b-9105-74461eae8796.

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Caged compounds are a class of photosensitive reagents used to stimulate cells with spatial control down to a sub-cellular level, and millisecond temporal control. They comprise of biologically important molecule which is modified with a photolabile protecting group. In the absence of light, caged compounds are physiologically silent but irradiation with light induces the release of biologically active species. Illumination under two-photon conditions is particularly advantageous as it enables restriction of the photolysis volume to ~1 fL and it provides deeper penetration into scattering samp

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9

He, Chaobin. "Synthesis and structure of rigid chain polyamides with bulky side groups." Thesis, University of Cambridge, 1994. https://www.repository.cam.ac.uk/handle/1810/273003.

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10

Deodhar, Bhushan S. "Towards the development of rotaxanes with two functional blocking groups." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1311690891.

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11

Wood, Martin William. "The Modules We Live By in Groups: Individual Differences in Orientations toward Coordinating Action in Groups." Thesis, Griffith University, 2019. http://hdl.handle.net/10072/386549.

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A growing body of literature is beginning to examine how individuals engage and interact with others within group contexts. However, no research has examined how individuals’ orientations toward coordinating action in groups, their relational orientations, alter their behaviour within group interactions. This thesis asserts that this gap has potentially been driven by the absence of a framework that captures all facets of the relational modules individuals use to coordinate action in groups. In turn, existing measures of relational orientations cannot necessarily be applied within the intragro

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12

Yeats, Keith. "An investigation into the synthesis and crosslinking of some polymers containing cyclopropyl groups." Thesis, Durham University, 1990. http://etheses.dur.ac.uk/6051/.

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The thesis describes an investigation into the use of polymers containing cyclopropyl groups as network forming materials. The initial route investigated involved the synthesis and homopolymerization of novel acrylate and methacrylate monomers containing cyclopropyl groups. Preliminary crosslinking experiments revealed the unsuitability of this approach. The second route examined involved the synthesis of a series of all hydrocarbon copolymers containing pendant cyclopropyl groups. Crosslinking experiments using a variety of initiators demonstrated the feasibility, in principle, of the propose

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13

Rudd, Martin D. "Macrocyclic complexation of cationic f-block (lanthanide) and p-block (groups 14 and 15) metal species." Thesis, University of Warwick, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282539.

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14

楊小雯 and Siu-man Yeung. "The synthesis and reactions of 3H-pyrroles bearing methyl and aryl groups." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1991. http://hub.hku.hk/bib/B31210119.

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15

Saito, Hayate. "Development of Silyl Groups Bearing Bulky Alkoxy Unit and Their Application to Organic Synthesis." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263488.

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16

Christian, Karen. "Content-Related Interactions and Methods of Reasoning within Self-Initiated Organic Chemistry Study Groups." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/145096.

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Students often use study groups to prepare for class or exams; yet to date, we know very little about how these groups actually function. This study looked at the ways in which undergraduate organic chemistry students prepared for exams through self-initiated study groups. We sought to characterize the methods of social regulation, levels of content processing, and types of reasoning processes used by students within their groups. Our analysis showed that groups engaged in predominantly three types of interactions when discussing chemistry content: co-construction, teaching, and tutoring.

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17

Ritchie, Jason Duane. "The distribution of charge and acidic functional groups in natural organic matter the dependence on molecular weight and pH /." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-08252005-125918/.

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Thesis (Ph. D.)--Earth and Atmospheric Sciences, Georgia Institute of Technology, 2006.<br>Michael Bergin, Committee Member ; E. Michael Perdue, Committee Chair ; Ching-Hua Huang, Committee Member ; Ellery Ingall, Committee Member ; Martial Taillefert, Committee Member. Vita. Includes bibliographical references.

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18

Grudzien, Rafal M. "Synthesis and characterization of ordered cage-like siliceous mesostructures with organic pendant and bridging groups." [Kent, Ohio] : Kent State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1226507948.

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Thesis (Ph.D.)--Kent State University, 2008.<br>Title from PDF t.p. (viewed Dec. 17, 2009). Advisor: Mietek Jaroniec. Keywords: mesoporous, FDU-1, SBA-16, organosilicas, pendant groups, bridging groups, adsorption, isocyanurate, template removal, cage-like structures. Includes bibliographical references (p. 219-238).

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19

Malmstrom, Rex R. "Contributions of abundant bacterial groups to the flux of dissolved organic matter in the ocean." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 1.42 Mb.,170 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3200540.

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20

Mizori, Farhad G. "Transmetallation from zirconium to boron : the synthesis and conjugate addition of mixed unsymmetrical tricoordinate organoboranes containing phenyl and methyl groups /." Diss., Connect to a 24 p. preview or request complete full text in PDF formate. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3138868.

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21

Dell'angela, Martina. "Organic molecules at metal surfaces: the role of functional groups in self-assembly and charge transfer." Doctoral thesis, Università degli studi di Trieste, 2009. http://hdl.handle.net/10077/3071.

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2007/2008<br>The understanding of the interaction of organic molecules with metal surfaces is crucial for tailoring the desired properties of future devices that can be employed for molecular electronics or biomedical applications. Self-assembly of complex supramolecular structures and charge transfer through molecular films or even through single molecules are some of the properties that have recently attracted much interest both for possible applications and for more fundamental studies. The molecule-surface interaction takes place thanks to the functional groups that constitute the

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22

Wild, Peter Gareth. "The use of immobilised crown ethers as in-situ protecting groups for organic synthesis within flow reactors." Thesis, University of Hull, 2008. http://hydra.hull.ac.uk/resources/hull:1180.

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Organic synthesis often requires one functional group of a bifunctionalised compound to be rendered temporarily inert to allow the selective reaction of another moiety. While protecting groups are used to remove the problem of the functional group incompatibility, they also raise other issues such as increasing the length of the synthetic pathway (by at least two steps – protection and deprotection), generally leading to an increase in cost and a decrease in yield. The protecting group is often selected based upon the deprotection conditions, leading to the requirement for orthogonal protectin

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23

Thenna, Hewa Kosala R. S. "Applications Focused Synthetic Modification on Photoremovable Protecting Groups (PRPG) & Photochemical Analysis on Organic Azides and Isoxazoles." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511858669354976.

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24

Macklin, Todd Kristopher. "The development of sulfamates as latent directed metalation groups. Total synthesis of schumanniophytine. Divergent synthesis of substituted chromone 3- and 8-carboxamides." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/925.

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25

Webb, Lauren J. Gray Harry B. "Chemical characterization and charge carrier dynamics of crystalline silicon(111) surfaces modified with surface-bound organic functional groups /." Diss., Pasadena, Calif. : California Institute of Technology, 2005. http://resolver.caltech.edu/CaltechETD:etd-05262005-123044.

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26

Mogemark, Mickael. "Solid-phase glycoconjugate synthesis : on-resin analysis with gel-phase ¹9F NMR spectroscopy." Doctoral thesis, Umeå University, Chemistry, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-438.

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<p>An efficient and versatile non-destructive method to analyze the progress of solid-phase glycoconjugate synthesis with gel-phase <sup>19</sup>F NMR spectroscopy is described. The method relies on use of fluorinated linkers and building blocks carrying fluorinated protective groups. Commercially available fluorinated reagents have been utilized to attach the protective groups. </p><p>The influence of resin structures for seven commercial resins upon resolution of gel-phase <sup>19</sup>F NMR spectra was investigated. Two different linkers for oligosaccharide synthesis were also developed and

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27

Bonner, Grady Gregg 1965. "Synthesis, pharmacology, and structural analysis of opioid peptides: Cyclic somatostatin analogs which include unusual amino acids with conformationally restricted side-chain groups." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282318.

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This work relates the activities of Somatostatin-derived opioid peptides to their 3-dimensional structures. Due to the flexability of peptides, they adopt multiple conformations. This flexibility leads to ambiguity in the development of structure-activity profiles. Here flexibility is reduced by incorporation of amino acids with conformationally restricted side-chain groups. These groups are restricted to certain topographies by cyclization or biased through substitution at the beta carbon. The opioid activities of these peptides are determined by brain binding radioligand competition assay, i

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28

Sigstad, Emma Elizabeth. "Extraction of 1:1 electrolytes and some organic molecules by resins containing dibenzo-18-crown-6 as anchor groups." Thesis, University of Surrey, 1985. http://epubs.surrey.ac.uk/843414/.

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Resins containing dibenzo-18-crown-6 (phiDB18C6) as anchor groups have been prepared according to the procedure suggested by Blasius and the total capacity, CT, determined by micro analysis. The effective capacity, CE, of phiDB18C6 towards the alkali-metal salts using water as reaction media was obtained from saturation experiments. The electrolyte concentration dependence of the distribution ratio of 1:1 electrolytes between phiDB18C6 and water at 298K was studied and the results used to determine the concentration range at which a maximum separation factor between two ions could be achieved.

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29

Kulikov, Anton V. "DEVELOPMENT OF PHOTOCLEAVABLE LINKER GROUPS FOR APPLICATION TO PHOTOCLEAVAGE OF LIPOSOMES AND OF CAGING ALCOHOLS AND CARBOXYLIC ACIDS." Bowling Green State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1150729530.

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30

Zhao, Qun. "Palladium-catalyzed directed introduction of α-CF3-vinyl and SCF3 groups by C-H bond functionalization". Thesis, Normandie, 2017. http://www.theses.fr/2017NORMIR15.

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Ces dernières années ont été témoin de l'énorme développement de la chimie organique du fluor. Notamment, l'introduction de groupements fluorés émergents sur des « briques » moléculaires variées a attiré l'attention de la communauté scientifique en raison de leurs propriétés particulières. De plus, la stratégie de fonctionnalisation dirigée de la liaison C-H par catalyse par les métaux de transition, a conduit à une révolution dans le développement de méthodologies synthétiques originales. Par conséquent, la conception de nouvelles approches synthétiques pour l'introduction de groupements fluo

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31

Elacqua, Elizabeth. "Supramolecular chemistry of molecular concepts: tautomers, chirality, protecting groups, trisubstituted olefins, cyclophanes, and their impact on the organic solid state." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/3447.

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The research presented in this thesis is founded upon the ability to mimic Nature by using highly directional forces to influence self-assembly, while achieving the formation of desired supramolecular structures. The successful engineering of such solids relies upon a full comprehension of supramolecular synthons, so as to apply them to design complex architectures. We have studied synthon formation in multifunctional pharmaceutical solids. Through the formation of salts and co-crystals, we uncovered a role of tautomers in the salt – co-crystal continuum. From a solid-state perspective, one ca

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32

Selaya, Susan D. "Investigations into the fluorescent covalent labeling of biomolecules utilizing rhodamine dyes, electrophilic leaving groups and mRNA display." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/3623.

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The discovery of a method by which proteins of interest can selectively be labeled with a probe of choice intracellularly is a longstanding goal in chemical biology research. Conventional labeling techniques have utilized large domain tags but despite the development of small labeling molecules there have been no short peptide sequences known to covalently label a small molecule without the aid of an enzymatic process or metal chelation. We aimed to find a sequence of nucleophilic peptides that reacted covalently and specifically with electrophilic small labeling molecules using mRNA display.

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33

Sobieski, Julian Witold. "Assessing steric bulk of protecting groups via a computational determination of exact cone angle and exact solid cone angle." Kent State University Honors College / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1528385706530151.

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34

Hartdegen, Vera [Verfasser], and Thomas M. [Akademischer Betreuer] Klapötke. "Energetic polymers and plasticizers based on organic azides, nitro groups and tetrazoles : synthesis and characterization / Vera Hartdegen. Betreuer: Thomas M. Klapötke." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2016. http://d-nb.info/1105374033/34.

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35

Grabicka, Bogna E. "Microwave-Assisted Synthesis of Ordered Mesoporous Organosilicas with Surface and Bridging Groups." Kent State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=kent1290459085.

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36

Konosonoks, Armands. "Release of Alcohols Through Photoenolization." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1132334815.

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37

Schwartz, Rachel E. "Oxidized organic functional groups in aerosol particles from forest emissions measured at mid-mountain and high-elevation mountain sites in Whistler, BC." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p1474776.

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Thesis (M.S.)--University of California, San Diego, 2010.<br>Title from first page of PDF file (viewed April 14, 2010). Available via ProQuest Digital Dissertations. Includes bibliographical references.

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38

Karlsson, Torbjörn. "Complexation of cadmium, copper and methyl mercury to functional groups in natural organic matter : studied by X-ray absorption spectroscopy and binding affinity experiments /." Umeå : Dept. of Forest Ecology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/2005117.pdf.

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39

Sattar, A. K. "Catalytic transfer hydrogenation of organic functional groups using Ni, Ru complexes and asymmetric induction using racemic chiral and achiral ligands and synthetic applications." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2005. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2462.

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40

Yang, Florent. "Electrochemical modification of Si surfaces by methyl groups (CH 3, CD 3), ethynyl derivatives, pyrrole and thiophene." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2009. http://dx.doi.org/10.18452/16034.

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Silizium (Si) wird für eine breite Palette von Anwendungen wie z.B. in Solarzellen, Mikroelektronik, Biochips und so weiter eingesetzt. In dieser Arbeit wurden neue Hybridsysteme aus Si und organischen Molekülen, bezüglich der Oberflächenpassivierung des Halbleiters und der resultierenden elektronischen Eigenschaften untersucht. Insbesondere wurden Methyl-Gruppen (CH3 und CD3), Ethynyl-Derivate (H−C≡C-, CH3−C≡C-, und C6H5−C≡C-), sowie Pyrrol und Thiophen aus Grignardlösungen untersucht. Bezüglich Stabilität und Defektkonzentration konnte gezeigt werden, dass organisch modifizierte Si-Oberfläch

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41

Ilic, Ivan [Verfasser], Markus [Akademischer Betreuer] Antonietti, Andreas [Gutachter] Taubert, and Christina [Gutachter] Roth. "Design of sustainable cathodes for Li-ion batteries : understanding the redox behaviour of guaiacyl and catecholic groups in lithium organic system / Ivan Ilic ; Gutachter: Andreas Taubert, Christina Roth ; Betreuer: Markus Antonietti." Potsdam : Universität Potsdam, 2020. http://d-nb.info/1222587696/34.

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42

Anzicek, Nika. "Studies towards a second-generation synthesis of the aplyronines." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/267831.

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The aplyronines are a family of 24-membered macrolides of polyketide origin, isolated from the Japanese sea hare Aplysia kurodai. They exhibit an exceptional biological activity profile, acting through an actin and tubulin dual-targeting mechanism, with subnanomolar growth inhibitory potency against a diverse range of cancer cell lines. These characteristics render the aplyronines ideal payloads for antibody-drug conjugates but their prohibitively low natural abundance calls for an efficient total synthesis to overcome the supply issue. This dissertation describes the efforts towards developin

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43

Naulet, Guillaume. "Techniques de protection pour la synthèse de larges arènes polycycliques par réaction de Perkin." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0188/document.

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La variante « glyoxylique » de la réaction de Perkin permet de lier entre eux deux fragments aromatiques par un pont maléique. La rigidification de cet intermédiaire flexible mène à des systèmes aromatiques polycycliques étendus par création des liaisons carbone-carbone manquantes. Cette stratégie requiert l'utilisation d'acides arylacétiques et arylglyoxyliques, et l’utilisation d'unités bifonctionnelles a auparavant permis la synthèse de cibles variées allant des phénacènes plans aux (poly)hélicènes très distordus, mais aussi des macrocycles conjugués. Afin d'étendre la taille et la variété

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44

Ericsson, Cecilia. "Synthesis of Tetrahydrofuran and Pyrrolidine Derivatives Utilising Radical Reactions : Organochalcogenides in Reductive, Carbonylative and Group-Transfer Cyclisation." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4018.

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45

Liu, Jianping. "Part I. Self-assembled, low-dimensional materials composed of both lanthanides and transition metals bridged by cyanate or cyanide groups. Part II. Syntheses and reactivity studies of cyclic organohydroborate anions in organic and organometallic.. /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487943341528842.

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46

El, Haddad Imad. "Fraction primaire et secondaire de l'aérosol organique : méthodologies et application à un environnement urbain méditerranéen, Marseille." Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10029.

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La mise en place de politiques efficaces visant à la réduction des niveaux de concentrations en PM exige la connaissance préalable des sources primaires et secondaires de l’aérosol organique, une fraction majoritaire des PM demeurant encore mal appréhendée. Les travaux réalisés au cours de cette thèse s’inscrivent dans le cadre du projet FORMES qui avait pour principal objectif d’évaluer et de contraindre les principales méthodes de quantification de l’influence des différentes sources de la fraction organique de l’aérosol en milieu récepteur et d’en optimiser les procédures. La caractérisatio

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47

Nokami, Toshiki. "Aqueous Organic Syntheses Using Pyridylsilyl Group as a Removable Hydrophilic Group." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/147630.

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48

Parker, D. C. "The dimethyl(phenyl)silyl group : A masked hydroxyl group for organic synthesis." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372282.

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49

Naim, A. A. "Polymer end-group studies." Thesis, Lancaster University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376702.

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50

Chrystiuk, E. "Acyl group transfer mechanisms." Thesis, University of Kent, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374300.

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