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Dissertations / Theses on the topic 'Chemical tests and reagents. Cyclopropane'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Karunaratne, Veranja. "Donor-Acceptor reagents derived from 4-chloro-2-trimethylstannyl-1-butene, application to the total syntheses of (±)-\delta]9(12)-capnellene and (±)-pentalenene." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25810.

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This thesis describes the preparation of 4-chloro-2-trimethyl-stannyl-1-butene (8̲4̲) and its conversion into a number of structurally interesting and synthetically useful donor-acceptor reagents. Thus, transmetalation of (8̲4̲) with methyllithium produced 4-chloro-2-lithio-1-butene (9̲5̲), which reacted smoothly at -78°C in tetrahydrofuran with aldehydes, ketones and α,β-unsaturated N,N',N'-trimethylcarboxhydrazides to provide the addition products (1̲0̲8̲)-(̲1̲1̲3̲) and (̲1̲2̲8̲)-(̲1̲3̲0̲). When the reaction mixtures were treated with hexamethylphosphoramide and were then allowed to warm to

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2

Holt, Jay. "1,8-Diarylanthracenes as reagents for asymmetric synthesis." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/29902.

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3

Wang, Lanquing. "Characterization of selenide drugs and their metabolites by hydride generation ICP-MS and HPLC/ICP-MS." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/28041.

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4

Adeosun, Adetenu Adebisi. "Novel alkylidenation, epimetallation and hydrometallation reactions of group 4 metal alkyls." Diss., Online access via UMI:, 2004. http://wwwlib.umi.com/dissertations/fullcit/3150494.

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5

Bodzay, Steve J. "Organotin reagents toward the preparation of cyclic disulfides and related compounds." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72827.

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6

Nielsen, Randall Gunnar. "Preparation and characterization of immunological reagents for analytical applications." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184395.

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Immunochemical reagents were characterized under carefully controlled laboratory conditions using conventional high performance liquid chromatography instrumentation. The stationary phase was prepared by attaching antigen molecules to an insoluble support through a covalent linkage. Experiments were carried out by introducing antibody molecules into the mobile phase and monitoring their interaction with the stationary phase. Monoclonal antibodies were employed because of their more homogeneous properties compared to polyclonal antisera. Radioisotopes were employed to study low level adsorption

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7

Fu, Yunyi Michael. "Development of a polymer-supported reagent for Trost-Lu isomerization reactions and reagents for Mitsunobu reactions." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B39793989.

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8

Fu, Yunyi Michael, and 付運毅. "Development of a polymer-supported reagent for Trost-Lu isomerization reactions and reagents for Mitsunobu reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B39793989.

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9

Terhune, Tammy Lee 1962. "Preparation of immunochemical reagents for a non-competitive assay for the detection of haptens." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276829.

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The strategy required for the development of the immunochemical reagents needed for a non-competitive assay for the detection of haptens was investigated. For this work, these reagents were termed "anti-complex" antibodies. To preserve the integrity of such an assay, these "anti-complex" antibodies should not react with either the free anti-hapten antibody or the free hapten and they should not compete with the hapten for binding to the anti-hapten antibody. Anti-hapten hybridomas were developed using standard hybridoma technology. The development of anti-complex hybridomas was investigated us

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10

Lau, Kwok-kin. "The chemistry of lanthanide complexes with amide and carboxylate ligands /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36584654.

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11

Lau, Kwok-kin, and 劉國健. "The chemistry of lanthanide complexes with amide and carboxylate ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B45015491.

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12

Harden, John Michael. "Elucidation of key interactions between in situ chemical oxidation reagents and soil systems." Diss., Mississippi State : Mississippi State University, 2006. http://sun.library.msstate.edu/ETD-db/ETD-browse/browse.

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13

Spratt, Michael Phillip. "Solution and solid state NMR studies of fluorine tagging reagents." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/49865.

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A series of studies are presented in which fluorine tagging reagents are used to analyze complex mixtures for compounds containing active hydrogen functional groups (e.g., hydroxyl, amine, thiol, and carboxylic groups). The existence of these derivatized functional groups is determined by utilizing a number of solution and solid-state nuclear magnetic resonance (NMR) techniques. In solution NMR studies p-fluorobenzoyl chloride was the fluorine tagging reagent of choice because of a large ¹⁹F chemical shift range for the different derivatized substrates (~10 ppm) and generally good reaction y

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14

Kan, Tze-wai Jovi. "Development of new polymer-supported reagents for organic synthesis, solvent effects in samarium promoted allylic alcohol cyclopropanation reactions and time resolved resonance studies of the photodeprotection of p-hydroxyphenacyl caged phototrigger compounds." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37925660.

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15

Shelton, Kathy Rhea. "Kinetics of 3,5-diacetyl-1,4-dihydrolutidine in formaldehyde detection." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54420.

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Formaldehyde, a hazardous and toxic substance, can be found in most resin treated durable press fabrics. The current formaldehyde regulations are limited to worker exposure in an industrial setting and the possibility of government regulation of formaldehyde release from textiles is of concern to the textile industry. The most common test of formaldehyde release used by the U.S. textile industry is the AATCC Test Method 112, a colorimetric determination based on the Hantzsh reaction between ammonia, formaldehyde, and acetylacetone. The chromophore formed is 3,5-diacetyl-1,4-dihydrolutidine (DD

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16

Lau, Chi-yin. "Reductive aldol cyclizations using Stryker's reagent and polystyrene-supported triphenylarsine in carbon-carbon bond forming reactions." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B39634450.

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17

Lau, Chi-yin, and 劉志賢. "Reductive aldol cyclizations using Stryker's reagent and polystyrene-supported triphenylarsine in carbon-carbon bond forming reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39634450.

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18

Kan, Tze-wai Jovi, and 簡紫慧. "Development of new polymer-supported reagents for organic synthesis, solvent effects in samarium promoted allylic alcohol cyclopropanationreactions and time resolved resonance studies of the photodeprotectionof p-hydroxyphenacyl caged phototrigger compounds." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37925660.

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19

Kirchhoefer, Patrick L. "A bridgehead organolithium reagent, the Retro-Nazarov reaction, and 4+3 cycloadditions with a nicotinic acid derivative /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3164519.

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20

Shi, Yunqing Nancy. "¹H NMR and HPLC studies of tetraarylporphyrin atropisomers." Scholarly Commons, 1993. https://scholarlycommons.pacific.edu/uop_etds/2250.

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This thesis includes NMR studies of free base meso-tetra(otolyl) porphyrin (TTP) and meso -tetraphenylporphyrin (TPP) and their dications protonated by trifluoroacetic acid (TFA). The chemical shift changes of the -NH resonance are very unusual and have never been reported. At the beginning of the titration, the N-H resonances broaden considerably but do not shift; when the ratio of [TFA]/[TTP] or [TFA]/[TPPf are over 2, the N-H resonances shift markedly to lower field by as much as 1.6 ppm. At acid levels well above the equivalence point, the NH resonances moves back to higher field. Moreover

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21

Brumbaugh, William G. "Development of an integrative sampler for bioavailable metals in water /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9842510.

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22

Learmonth, Robin Alec. "Studies in asymmetric synthesis." Thesis, Rhodes University, 1991. http://hdl.handle.net/10962/d1005018.

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The concept of combining two well established areas of organic chemistry, viz., organosilicon chemistry and the use of chiral auxiliaries, into a viable, alternative method of asymmetric synthesis has only very recently begun to receive attention. At the outset of this investigation, no asymmetric reactions of silyl enol ethers, chiral by virtue of optically active substituents on the silicon, had been reported. A range of novel chiral silyl enol ethers have thus been prepared from a variety of ketones, including pinacolone, cyclohexanone, and α-tetralone, and employing menthol, borneol, and c

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23

Aluoch, Austin Ochieng. "Metal enhanced detection of salivary proteins, Bacillus globigii and novel reagents for bioimaging & sensing." Diss., Online access via UMI:, 2007.

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24

Silva, Aline Santana da [UNESP]. "Desenvolvimento de métodos quantitativos e de sistemas de screening para a determinação de glifosato." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/105723.

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Made available in DSpace on 2014-06-11T19:35:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-02-28Bitstream added on 2014-06-13T20:26:01Z : No. of bitstreams: 1 silva_as_dr_araiq.pdf: 2860868 bytes, checksum: 0a5366c12c615d912dea72ff05ef8e46 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O produto comercial Roundup®, contendo o glifosato como principal ingrediente ativo, é vendido mundialmente por ser um herbicida sistêmico, pós-emergente e não seletivo. Além disso, a alta eficiência no processo de remoção de plantas indesejadas e o aumento de cultu

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25

Silva, Aline Santana da. "Desenvolvimento de métodos quantitativos e de sistemas de screening para a determinação de glifosato /." Araraquara : [s.n.], 2012. http://hdl.handle.net/11449/105723.

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Resumo: O produto comercial Roundup®, contendo o glifosato como principal ingrediente ativo, é vendido mundialmente por ser um herbicida sistêmico, pós-emergente e não seletivo. Além disso, a alta eficiência no processo de remoção de plantas indesejadas e o aumento de culturas transgênicas favorecem seu uso extensivo. Embora não seja considerado um sério contaminante para o homem, o controle e monitoramento destes herbicidas são muito importantes. Desta forma, o presente projeto propõe o desenvolvimento de sistemas de screening e métodos analíticos limpos que possam ser aplicados à determinaçã

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26

Goddard-Borger, Ethan D. "Some synthetic carbohydrate chemistry : natural product synthesis, rational inhibitor design and the development of a new reagent." University of Western Australia. School of Biomedical, Biomolecular and Chemical Sciences, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0043.

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Earnest carbohydrate research was initiated in the nineteenth century by several talented organic chemists. Carbohydrates, now known to play essential roles in a range of fundamental biological processes, are presently studied by a throng of scientists from many fields, including: biochemistry, molecular biology, immunology, structural biology, medicine, agriculture, pharmacology and, of course, chemistry. Organic chemistry remains as relevant to carbohydrate research as it has ever been; its practitioners, with their skills in synthesis and fundamental understanding of molecules, are truly in

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27

Zhang, Yang. "Mechanistic studies and synthetic applications of Ce (IV) reagents /." Diss., 2005. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3203831.

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28

Van, der Linde Gert Johannes. "Studie van die wisselwerking tussen reagense en minerale by die flottasie van apatiet." Thesis, 2015. http://hdl.handle.net/10210/14804.

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D.Sc. (Chemistry)<br>The Phosphate Development Corporation (FOSKOR) recovers apatite from foscorite ore by a process of froth flotation. Four reagents are used viz. sodium hydroxide, water-glass, nonylphenol tetraglycol ether (EMU) and a fatty acid. The fatty acid is mainly composed of a mixture of oleic and linoleic acid in a ratio of 1,2:1. The aim of this study was to investigate the influence of the first three above-mentioned reagents on the adsorption of oleic, linoleic and linolenic acids on apatite and The Phosphate Development Corporation (FOSKOR) recovers apatite from foscorite ore b

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29

Shen, Yang. "Chemical Fate Studies of Mining Reagents: Understanding the Decomposition Behavior under Various Conditions." Thesis, 2016. https://doi.org/10.7916/D8WS8T57.

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The decomposition behavior of several mining reagents (i.e., xanthate, dithiocarbamate, dithiophosphate and dithiophosphinate) used widely in mineral processing operations was studied. Decomposition has been reported to generate toxic compounds such as CS₂ (carbon disulfide) and COS (carbonyl sulfide), causing severe concerns to SHE (safety, health and environment). With the global trend of becoming sustainable/green and the increasingly strict regulations, the mining industry is facing an unprecedented pressure to handle the problematic reagents that can lead to the adverse impacts. Unfortuna

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30

"Spectrofluorimetric determination of aluminium in food and antacid drugs with 8-hydroxyquinoline as reagent." Chinese University of Hong Kong, 1993. http://library.cuhk.edu.hk/record=b5887797.

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by Kwong Tsz-kin.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1993.<br>Includes bibliographical references (leaves 90-96).<br>Chapter I. --- Abstract --- p.i<br>Chapter II. --- Acknowledgment --- p.ii<br>Chapter III. --- Table of contents --- p.iii<br>Chapter IV. --- List of Tables and Figures 、 --- p.iv<br>Chapter Chapter 1. --- Introduction --- p.1<br>Chapter 1.1. --- General introduction<br>Chapter 1.2. --- Review of analytical methods for aluminium analysis<br>Chapter 1.3. --- Spectrofluorimetric determination of aluminium<br>Chapter 1.4. --- Project aim<br>Chapter Chapter 2

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31

Willemse, Johannes Alexander. "Carbon monoxide as reagent in the formylation of aromatic compounds." Thesis, 2008. http://hdl.handle.net/10210/433.

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Sasol endeavors to expand its current business through the beneficiation of commodity feedstreams having marginal value into high-value chemicals via cost-effective processes. In this regard Merisol, a division of Sasol has access to phenolic and cresylic feedstreams, which have the potential to be converted to fine chemicals. Targeted products include para-anisaldehyde, ortho- and para-hydroxybenzaldehyde which are important intermediates for the manufacture of chemicals used in the flavor and fragrance market and various other chemicals. The use of CO technology (HF/BF3) to produce these ald

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32

Elephant, Dimpho Elvis. "A comparative study of the BCR sequential and batch extractions for wastes and waste-amended soil." Thesis, 2010. http://hdl.handle.net/10413/7357.

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The use of standard soil tests to assess waste materials has become a common practice in waste management. However, the suitability of using standard soil tests on waste materials is questionable. Therefore, this investigation was undertaken to compare commonly used chemical extraction methods for their ability to extract elements from soil, waste, and soil-waste mixtures. This was carried out by: · Assessing the effects of extraction time on the extractability of Al,Ca, Co, Cu, Fe, Mg, Mn, Ni, Pb, S, Si, and Zn; · Assessing the comparability between single and sequential extraction. Two

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33

"The enhancement of the activity of commercial antifungal agents using Aspalathus linearis synthesized gold nanoparticles." Thesis, 2015. http://hdl.handle.net/10210/13844.

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M.Sc.(Nanoscience)<br>The synthesis and application of gold nanoparticles (AuNPs) has been intensively studied worldwide. However, the toxicity of these nanoparticles is still a concern. We considered that various physiochemical methods used to synthesize AuNPs are energy driven, costly and require the use of harmful chemicals. Thus, this makes them not environmentally-friendly. The aim of this study was therefore to synthesize AuNPs via a greener route using Aspalathus linearis tea leaves. The AuNPs were used to coat eight commercial antifungal discs (i.e. amphotericin B, fluconazole, clotrim

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