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Dissertations / Theses on the topic 'General chemistry'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Sherman, Kristin Mary Daniels. "Affordances of Instrumentation in General Chemistry Laboratories." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc30510/.

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The purpose of this study is to find out what students in the first chemistry course at the undergraduate level (general chemistry for science majors) know about the affordances of instrumentation used in the general chemistry laboratory and how their knowledge develops over time. Overall, students see the PASCO system as a useful and accurate measuring tool for general chemistry labs. They see the probeware as easy to use, portable, and able to interact with computers. Students find that the PASCO probeware system is useful in their general chemistry labs, more advanced chemistry labs, and

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2

Srinivasan, Gita. "Some factors affecting performance in general chemistry." Master's thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-04272010-020151/.

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3

Rodriguez, Christian. "Investigating the Impact of College-Level General Chemistry Curricula on General Chemistry Students' Conceptions of Organic Acidity and Oxidation-Reduction." Thesis, State University of New York at Stony Brook, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10932210.

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<p>Chemistry students have historically struggled with conceptually understanding organic acidity and oxidation-reduction. Previously dominant approaches towards remediating students? misconceptions has been challenged by Explanatory Coexistence, which eludes to a competition between conceptions held within individuals. Conceptual reprioritization may be associated with the restructuring of conceptual dominance hierarchies, which may occur once a conceptual competition concludes. Investigation of conceptual reprioritizations of general chemistry students? conceptions of organic acidity and oxi

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4

Stewart, Barbara. "Grading the General Chemistry Laboratory: A Constructivist Approach." Fogler Library, University of Maine, 2001. http://www.library.umaine.edu/theses/pdf/StewartB2001.pdf.

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5

Sorey, Timothy Lowell. "General chemistry laboratory for engineers a research-based approach /." Diss., Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/sorey/SoreyT1205.pdf.

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6

Clayton, Hayley J. "Synthesis and coordination chemistry of ligands for supramolecular chemistry and sensing applications." Thesis, University of Huddersfield, 2008. http://eprints.hud.ac.uk/id/eprint/6954/.

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A series of multidentate N-donor ligands have been synthesised all containing pyridyl and pyridyl/thiazole units and their coordination behaviour is described. The ligands are classified into four types; i) terpyridine containing pyridyl/thiazole ligands (L1-3); ii) pyridyl/thiazole ligands containing a 3,3′-disubstituted bipyridine core. (L4-8); iii) 2,2′-bipyridine containing a crown ether moiety (L9-11); and iv) a 2,2′- bipyridine derived ligand containing a urea functional group in the 3,3′-positions (L12). Chapter II describes terpyridyl/pyridyl/thiazole ligands: - the synthesis of (L1-3)

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7

Jenkins, Dave A. "Teaching First-Semester General Chemistry Using 3D Video Games following an Atoms First Approach to Chemistry." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1248376/.

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The unified learning model (ULM) focuses on students' engagement, motivation, prior knowledge, and working memory. This study employs the use of video games to assess students' learning through a 3D chemistry gaming environment. In this human-subjects research, students carried out missions and applied reasoning to solve problems appropriate for general chemistry content. For learning to occur, students must be engaged and motivated as stated in the ULM. Learning cannot necessarily be accomplished by experience alone, and critical thinking is required to turn the experience into learning. The

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8

Fenton, Owen S. (Owen Shea). "A general entry to C7-borono indole derivatives." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/79499.

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Thesis (S.M. in Organic Chemistry)--Massachusetts Institute of Technology, Dept. of Chemistry, 2012.<br>Vita. Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 36).<br>The development of a methodology to access C7 pinacolatoboron substituted indole derivatives is described. It has been applied to indole, tryptophan, and tryptamine derivatives. Further functionalization to a C7 phenolic tryptamine derivative is also described.<br>by Owen S. Fenton.<br>S.M.in Organic Chemistry

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9

Cicchillo, Robert Michael. "Formation of C-Glyosides via Dithioacetal Chemistry." Youngstown State University / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1004539703.

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10

Brown, Scott William. "Some general aspects of the Khand reaction." Thesis, University of Strathclyde, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278413.

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11

Channon, J. A. "A general aldol approach to polypropionate synthesis." Thesis, University of Cambridge, 1992. https://www.repository.cam.ac.uk/handle/1810/272244.

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12

Abrams, Micah Lowell. "General-Order Single-Reference and Mulit-Reference Methods in Quantum Chemistry." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6852.

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Many-body perturbation theory and coupled-cluster theory, combined with carefully constructed basis sets, can be used to accurately compute the properties of small molecules. We applied a series of methods and basis sets aimed at reaching the ab initio limit to determine the barrier to planarity for ethylene cation. For potential energy surfaces corresponding to bond dissociation, a single Slater determinant is no longer an appropriate reference, and the single-reference hierarchy breaks down. We computed full configuration interaction benchmark data for calibrating new and existing quantum

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13

Goodlet, Kellie Joy. "Improving Preceptor-Student Interrelationships in the General Chemistry (Chem XXI) Classroom." Thesis, The University of Arizona, 2011. http://hdl.handle.net/10150/144322.

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14

Walrond, Lisa. "Stability and chemistry of boron containing cations, anions, and neutrals." Thesis, University of Ottawa (Canada), 2007. http://hdl.handle.net/10393/27493.

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The structure, thermochemistry, isomerization and dissociation of the CH2BH2 and CH3BH radicals, cations and anions have been explored with a wide range of ab initio levels of computational theory and their formation has been probed by tandem mass spectrometry and RRKM kinetic theory. Calculations predict that CH2B H2&ceilr0;+ is not an equilibrium structure on the potential energy surface. The CH3B H&ceilr0;+ was characterized by its collision-induced dissociation mass spectrum and neutralization-reionization (NR) mass spectrometry was used to generate the CH3B H&ceilr0;• radical.

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15

Abell, Timothy Noah. "Investigating General Chemistry and Physical Chemistry Students' Understanding of Solutions Chemistry: The Development of the Enthalpy and Entropy in Dissolution and Precipitation Inventory." Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1555083886097745.

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16

Wishart, Neil. "General approaches to side functionalised #alpha#-amino acids." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357082.

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17

Phillips, Katherine Reece. "Sol-Gel Chemistry of Inverse Opals." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493452.

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Controlling nano to microscale structuration enables one to alter a material’s optical, wetting, mechanical, and chemical properties. Structuration on this scale can be formed from spherical building blocks; in particular, monodisperse, spherical colloids assemble into crystals that can be used to template an ordered, porous structure known as an inverse opal. The structure’s porosity and periodicity provide control over both light (photonic effects) and fluid flow (wetting effects). Controlling the composition allows chemical functionality to be added to the ordered, porous structure. Inverse

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18

Gorman, Stephen Anthony. "The chemistry of some di- and tri-phenylmethane dyes." Thesis, University of Central Lancashire, 1998. http://clok.uclan.ac.uk/7918/.

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Two series of dyes have been prepared: a comprehensive series of novel, unsymmetrical Malachite Green type dyes containing different amino substituents in the 4-positions of the phenyl rings and a series of symmetrical Michier's Hydrol Blue type dyes. Both series of dyes have been synthesised from the relevant carbinols or hydrols. The amino substituents used were dimethylamino, diethylamino, pyrrolidino, piperidino, morpholino, thiomorpholino and N-methylpiperazino. The rates of ailcalirie hydrolysis of the dyes at various hydroxide ion concentrations and temperatures have been investigated w

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19

Aborways, Marwa M. "Oxidative bromination and ring expansion in organic chemistry." Thesis, University of Huddersfield, 2016. http://eprints.hud.ac.uk/id/eprint/30280/.

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This thesis is composed of two independent research projects. The first major project discussed is electrophilic halogenation using inorganic halides in the presence of oxidant. This includes the conversion of tertiary propargyl alcohols in to α,α-dihaloketones. In addition, the oxidative bromination of a range of alkylbenzene derivatives using the inexpensive oxidant Oxone and sodium bromide is described with up to 4 C-H bonds being functionalised in this process. The second part of this thesis focuses on using silacyclobutanes in our aim to access new siliconcontaining chemical space. Silacy

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20

Machan, Jana. "Detection of collagen mutations by protein chemistry means in fibroblast cultures : feasibility study." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66234.

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21

El-Masri, M. "Synthetic studies towards pentalenolactone E and some general synthetic methods." Thesis, University of Southampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373974.

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22

Montey, Nicole R. "Investigation of pygmy sperm whale (Kogia breviceps ) populations in the southeastern United States using stable isotopes of carbon, nitrogen, and oxygen in teeth." Thesis, College of Charleston, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1587301.

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<p> The pygmy sperm whale (<i>Kogia breviceps</i>) is currently the second-most commonly stranded cetacean in the Southeastern United States (SEUS), but information concerning their population structure is severely limited. This study utilized stable isotope analysis to investigate the possible migratory patterns and population structure of <i>K. breviceps </i> among six different regions in the SEUS. Combined growth layers from different regions of the teeth were subsampled via dental drill and analyzed representing four different age classes: calf, juvenile, sub-adult, and adult, as well as

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23

Chen, Kok Hao. "Spatially Resolved, Highly Multiplexed RNA Profiling in Single Cells." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:17467198.

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The transcriptome of a cell contains a wealth of information about the cell’s current state and its recent history. System-wide analyses of the copy number and localization of RNAs in single cells promise to transform our understanding of many areas of biology, such as the origin and consequences of cellular heterogeneity, functions and mechanisms underlying sub-cellular localization of transcripts, and organization of cell types in tissues. Fluorescent in situ hybridization (FISH) based approaches for measuring single-cell gene expression offer high spatial resolution and single molecule sens

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24

Kuzmission, Andrew G. "General base and divalent metal ion catalyzed dissociation of pyruvate hydrate and hemiacetals /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487849377293583.

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25

Bowser, Lindsey Paige. "The effects of direct mathematics instruction on attitudes and success in general chemistry." Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/bowser/BowserL0811.pdf.

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In this investigation direct instruction on mathematical topics critical to the general chemistry curriculum was delivered by the chemistry teacher and members of the math department as part of a Proportions Project. Changes in student attitude and performance were measured using pre and post treatment surveys and assessments. After the Proportions Project, student performance improved by up to 28% at tasks incorporating multiple variables and unit conversions. The majority of students also reported better study skills, better understanding of the role of mathematics in the study of chemistry,

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26

Scott, Kerri Dalita. "Evaluation of ACT/SAT scores as predictors of student success in general chemistry /." Full text available from ProQuest UM Digital Dissertations, 2007. http://0-proquest.umi.com.umiss.lib.olemiss.edu/pqdweb?index=0&did=1414122651&SrchMode=1&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1221225256&clientId=22256.

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27

Egenti, Henrietta N. "Relationships of Approaches to Studying, Metacognition, and Intellectual Development of General Chemistry Students." Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc115074/.

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This study investigated approaches to studying, intellectual developments, and metacognitive skills of general chemistry students enrolled for the spring 2011 semester at a single campus of a multi-campus community college. the three instruments used were the Approaches and Study Skills Inventory for Students (ASSIST), the Learning Environment Preferences (LEP), and the Executive Process Questionnaire (EPQ). the subjects were 138 students enrolled in either general chemistry 1 or 2. the results revealed that the preferred approach to study was the strategic approach. the intellectual devel

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28

Belland, Joshua. "Comparison of Homework Systems (Four Web-Based) used in First-Semester General Chemistry." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc9858/.

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Web-based homework systems are becoming more common in general chemistry as instructors face ever-increasing enrollment. Yet providing meaningful feedback on assignments remains of the utmost importance. Chemistry instructors consider completion of homework integral to students' success in chemistry, yet only a few studies have compared the use of Web-based systems to the traditional paper-and-pencil homework within general chemistry. This study compares the traditional homework system to four different Web-based systems. Data from eight, semester classes consisting of a diagnostic pre-test, f

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29

Belland, Joshua Mason Diana Sue. "Comparison of homework systems (four web-based) used in first-semester general chemistry." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/permalink/meta-dc-9858.

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30

Bross, April Joyce. "An Evaluation of Meaningful Learning in a High School Chemistry Course." Diss., Temple University Libraries, 2008. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/12397.

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CITE/Language Arts<br>Ed.D.<br>This study utilized an action research methodology to examine students' understandings of science knowledge, and meaningful learning using the SLD (Science Lecture Demonstration) and laboratory instructional method in a high school chemistry classroom. This method was a modification of the Science Lecture Demonstration Method as developed by Majerich and Schmuckler (2004, in press), the modification due to the addition of a laboratory component. The participants in this study represented a convenience sample which included one class of twenty-two, middle to high

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31

Villalva, Nidia. "Development of regiocontrolled pentadienyl indium condensations and a carbometallation-intramolecular cycloaddition synthesis of taxoids." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/29068.

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The synthesis of the taxanes derivatives has been the major focus of this research. The efforts made towards the synthesis of these complex and successful drugs for the treatment of cancer have resulted in the development of efficient synthetic strategies. These approaches have arisen mainly from our studies in the carbometallation of propargyl alcohols and the development of stereoselective Lewis acid catalyzed IMDA. The application of these potential synthetic strategies has yielded very significant results. The synthesis of the tricyclic core of the taxanes (2.149) by a novel carbometallati

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32

Brown-McDonald, Jessie Lynn. "Understanding Multiple Bonding Interactions with Uranium and the Group 16 Elements (E = O, S, Se, Te)." Thesis, University of California, Santa Barbara, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3559820.

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<p>Uranium oxides are the most common form of uranium in both nuclear waste and in the environment. As such, the uranyl <i>di</i>oxo framework (UO<sub>2</sub>)<sup>2+</sup>, and its strong U&equiv;O triple bond interactions, dominate the research. It is well-established the oxo ligands are thermodynamically robust and kinetically inert, thus making the uranyl fragment very unreactive. Interestingly, microbial activation of uranyl is a vital component in the sequestration of uranium in uranium-contaminated environments, likely requiring functionalization of the normally unreactive oxo ligands.

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33

Jackson, Emily R. "Design, Synthesis and Biological Evaluation of Small Molecules to Target Mycobacterium tuberculosis Dxr| Exploration of Modified Carbon Chain Lengths and Extended Acyl Substituents." Thesis, The George Washington University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3592919.

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<p> Tuberculosis (TB), caused by <i>Mycobacterium tuberculosis</i> (<i>Mtb</i>), is one of the deadliest infectious diseases. Emergence of drug resistant strains of <i>Mtb</i> and co-infection with HIV has made TB both difficult and expensive to treat. New TB therapies are needed to shorten treatment and be effective against all strains and metabolic states of the organism. Development of inhibitors of 1-deoxy-D-xylulose-5-phosphate reducto-isomerase (Dxr), an essential enzyme for <i>Mtb,</i> is a novel approach toward the development of a new TB chemotherapy. Natural product fosmidomycin

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34

Kim, Jung-Hee. "Developing artificial proteases and nucleases : catalytic hydrolysis of unactivated amides, nitriles and phosphates." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39317.

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Cis-diaqua cobalt complex ((L)Co(III)(OH$ sb2) sb2 rbrack sp{3+}$ promoted hydrolyses of phosphate esters, nitriles and carboxy amides are examined (L represents 1,4,7,10-tetraazacyclododecane (cyclen) and its N-methylated derivatives). ((Cyclen)Co(OH$ sb2) sb2 rbrack sp{3+}$ is more active than any other catalysts reported to date for hydrolyzing dimethyl phosphate, acetonitrile and formyl morpholine.<br>((Cyclen)Co(OH$ sb2) sb2 rbrack sp{3+}$ efficiently hydrolyzes dimethyl phosphate under mild conditions (k = 3.7 $ times$ 10$ sp{-5}$ M$ sp{-1}$ sec$ sp{-1}$ at pD 6.3, 60$ sp circ$C). This r

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35

Zhu, Jiayi. "Interfacial behaviour of ionic block copolymers." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41039.

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The surface properties of quaternized poly(styrene-block-4-vinylpyridinium) AB block copolymers in monolayers spread at the air/water interface were thoroughly studied using the Langmuir film balance technique and microscopy techniques (i.e. transmission electron microscopy and atomic force microscopy). The effects of both molecular structure (i.e. chain lengths of the two blocks, alkyl chain length, and the counterion of the quaternizing agent) and the experimental parameters (i.e. measurement temperatures, salt species and salt concentrations in the aqueous subphase, compression rates, and h

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36

Gouin, Jean-Pierre. "Morphology of block ionomers : a study by SAXS and SANS." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41023.

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The solid state morphology of block copolymers containing short ionic terminal sequence(s) was investigated using small-angle X-ray and neutron scattering (SAXS and SANS) as a function of architecture (AB, ABA), chemical composition of the ionic block(s) (vinylpyridinium, cesium methacrylate), length of the ionic and nonionic (polystyrene) blocks, extent of neutralization, and method of preparation (compression molding, solvent casting). The ionic phase-separated microdomains were found to be spherical. The radius of those spheres depends only on the length of the ionic block and not on any ot

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37

Kegel, Laurel L. "Characterization of surface plasmon resonance (SPR) active nanohole array sensing platforms| Development and application of novel instrumentation and methodology." Thesis, University of Delaware, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3701123.

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<p> Surface plasmon resonance (SPR) active nanohole array substrates offer a diverse biosensing platform with high sensitivity and unique characteristics. This dissertation investigates the sensitivity and fundamental SP features of various nanohole array substrates and demonstrates higher sensitivity than conventional continuous gold platforms, tunability to specific analytes, and great enhancement of the local field intensity. Novel instrumentation and analytical techniques are developed and utilized to assess the nanohole array SPR sensing substrates in the near infrared as well as with int

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38

Holloway, Lauren Renee. "Synthesis and investigation of novel dinitrosyl-Iron complexes of chelated Bis-phosphine ligands| Potential nitric oxide delivery compounds." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527325.

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39

Jiang, Zhe. "Novel nanowire structures and devices for nanoelectronic bioprobes." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:17467307.

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Semiconductor nanowire materials and devices provide unique opportunities in the frontier between nanoelectronics and biology. The bottom-up paradigm enables flexible synthesis and patterning of nanoscale building blocks with novel structures and properties, and nano-to-micro fabrication methods allow the advantages of functional nanowire elements to interface with biological systems in new ways. In this thesis, I will focus on the development of bottom-up nanoscience platforms, which includes rational synthesis and assembly of semiconductor nanowires with new capabilities, as well as design a

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40

Boursalian, Gregory Bagrad. "Reactivity and Selectivity in Aryl C–H Functionalization by Electrophilic Radicals." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493437.

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Two main challenges hinder the development of new, broadly useful C–H functionalization reactions: (1) most C–H bonds constitute part of the relatively inert backbone of an organic molecule, so it is difficult to elicit sufficient reactivity from these bonds, and (2) C–H bonds are ubiquitous in organic molecules, so it is difficult to control the selectivity of which C–H bond is functionalized. The subject of this thesis is the functionalization of C–H bonds in aromatic molecules. In addition to the relevant background, herein are described two new reactions which address the challenges of rea

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41

Edwards, Michelle L. "STOP CHEATING!: AN EVALUATION OF A SCIENTIFIC INTEGRITY WRITING STRATEGY IN GENERAL CHEMISTRY I." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1409579223.

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42

Xu, Haozhi. "Exploring Students' Interactions, Arguments, and Reflections in General Chemistry Laboratories with Different Levels of Inquiry." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/228131.

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Students' learning in inquiry-based investigations has drawn considerable attention of the science education community. Inquiry activities can be viewed as knowledge construction processes in which students are expected to develop conceptual understanding and critical thinking abilities. Our study aimed to explore the effect of experiments with different levels of inquiry on students' interactions in the laboratory setting, as well as on students' written arguments and reflections. Our results are based on direct observations of group work in college general chemistry laboratories and analysis

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43

Mac, Eachern Anita Marie. "Synthesis and photochemistry of the phototoxin alpha-terthienyl and related compounds." Thesis, University of Ottawa (Canada), 1987. http://hdl.handle.net/10393/5489.

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44

Letellier, de St-Just Marie Claire H. "Synthesis of regio- and stereoselectively deuteriated sialyl glycerolipids for dynamic studies by hydrogen-2 NMR spectroscopy." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/6766.

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Sialic acid has been sought as an excellent candidate for $\sp2$H NMR studies because of its ubiquitous presence at the penultimate non-reducing ends of membrane glycoproteins and glycolipids and because it has been associated with a number of biological and immunological phenomena. Regio- and stereoselectively deuteriated sialyl glycerolipids 1a, 1b and 1c were required for these studies and were synthesized.(DIAGRAM, TABLE OR GRAPHIC OMITTED...PLEASE SEE MAI) The first step of the synthetic route developed, involved the synthesis of unlabeled and labeled glycerolipids. The regio- and stereos

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45

Cloutier, Josee. "High throughput methods in the development of new asymmetric reactions: Fluorescence resonance energy transfer technology for screening potential catalysts." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26829.

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High throughput methods are valuable for decreasing the time needed for the development of new asymmetric reactions. Catalyst discovery may be accelerated by the rapid screening of reactions for enantioselectivity. Chiral substrates are used in a novel fluorescence resonance energy transfer (FRET) assay. A fluorophore (donor), a fluorescence quencher (acceptor) and a recognition element are part of the assay substrates. The latter are prepared using different fluorescent donor/acceptor pairs for each enantiomer of the recognition element. Screening is performed using equimolar mixture of the t

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46

Zougagh, Najat. "Modifications de minéraux de type smectites et d'un polysilicate lamellaire." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27206.

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Les deux minéraux argileux, la montmorillonite-sodium et l'hectorite-sodium d'une part, et la magadiite d'autre part sont des phyllosilicates respectivement de la famille des smectites et des polysilicates lamellaires qui présentent la propriété de pouvoir échanger les cations sodiums, situés dans leur espace interlamellaires avec les protons pour former leur acide correspondant par le traitement à l'HCl. L'utilisation de la méthode de déconvolution pour les spectres de la RMN du 29Si MAS de la montmorillonite et l'hectorite a pour but d'identifier les différents environnements du silicium en

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47

Goulet, Nathalie Marie-Lyne. "Développement d'une méthodologie permettant l'insertion d'un méthyle en C8 d'une trans-décaline ainsi que son application à la synthèse du (+-)-desdimethylambliol B et de la (+-)-desdimethylagelasimine A." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27365.

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Le développement d'une stratégie qui permet d'installer un groupement méthyle sélectivement en position C8 d'une trans décaline est décrit. La réaction en tandem oxy-Cope/ene/Claisen avec un groupement directeur dans le précurseur, tel un sulfure d'éthyle, permet de n'obtenir qu'un seul diastéréoisomère (Schéma i).* Cette méthodologie a permis de synthétiser l'analogue sans le gem-diméthyle en C4 du produit naturel ambliol B (Schema u).* Cette méthodologie a aussi permis le deéeloppement de la synthèse d'un analogue d'agelasimine A, soit (+/-)-desdimethylagelasimine A. Cette étude s'est termi

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48

Leclerc, Jean-Philippe. "Développement et utilisation de nouvelles réactions d'arylation directe en synthèse organique." Thesis, University of Ottawa (Canada), 2007. http://hdl.handle.net/10393/27470.

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49

Rabaev, Madlena. "Unimolecular dissociations of ionized azo-tert-butane and acetone azine." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/27785.

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This M.Sc. thesis presents an experimental and a theoretical study of azo-tert-butane and acetone azine ions which belong to the azo and azine class of compounds, respectively. The experimental study involves an investigation of the fragmentation reactions using tandem mass spectrometry and TPEPICO (threshold photoelectron photoion coincidence) spectroscopy. The theoretical study involves ab initio calculations of neutral and ionized azo-tert-butane, acetone azine and their dissociation products. RRKM theory was used to probe the nature of the unimolecular dissociations by comparing theoretica

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50

Villemure, Elisia. "Developpement de nouvelles reactions d'arylation d'heterocycles azotes catalysees par le palladium." Thesis, University of Ottawa (Canada), 2009. http://hdl.handle.net/10393/28265.

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