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Dissertations / Theses on the topic 'Chemistry (SOMC)'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Rahman, Md Moshfiqur. "Some chemistry of bromobenzopyrans." Thesis, University of Central Lancashire, 1995. http://clok.uclan.ac.uk/20338/.

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A series of 2,2-disubstituted chroman-4-ones has been prepared by the base catalysed condensation of a carbonyl compound with 2'-hydroxyacetophenone. Chroman-4-ones substituted in the aromatic ring were more conveniently prepared by the cyclocondensation of a phenol with an a,j3-unsaturated carboxylic acid. 2,4-Dimethylphenyl-3-methylbut-2-enoate was obtained as a by-product during the preparation of 2,2,6,8 tetramethylchroman-4-one from 2,4-dimethyiphenol and 3,3-dimethylacrylic acid in polyphosphoric acid. The ester in polyphosphoric acid underwent a Fries rearrangement to give the chroman-4

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2

Harris, P. "Some chemistry of nitroacetamides." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234211.

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3

Cotter, Eimear S. N. "Some studies in tropospheric chemistry." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342214.

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4

Pombo-Villar, E. "Some chemistry relating to turmerones." Thesis, University of Warwick, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372228.

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5

Minhas, I. A. "Some aspects of thiol chemistry." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372100.

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6

Guigley, Robert. "Chemistry of some hexanuclear complexes." Thesis, University of Sussex, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359105.

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7

Shephard, Douglas Stuart. "Some cluster chemistry of ruthenium." Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/14406.

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This thesis describes research directed towards the synthesis, full chemical, spectroscopic and structural characterisation, and reactivity in selected cases of some ruthenium carbonyl clusters containing both π-donor and σ-donor ligands. Cluster nuclearities range between three and six metal atoms and are shown to display a variety of core geometries. Discussions centred on C-H and C-C activation, redox behaviour., magnetic susceptibility, solid state chemistry, mechanism and supramolecular chemistry are all presented. Chapter one contains some highlights of modern cluster chemistry and pays

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8

Zamaratski, Edouard. "Some Aspects of Nucleic Acids Chemistry." Doctoral thesis, Uppsala University, Department of Bioorganic Chemistry, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1195.

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<p>This thesis is divided into two parts based on a total of 8 papers: Part 1: <i>Synthesis, physicochemical and biochemical studies of chemically modified oligonucleotides and their duplexes and triplexes</i>. Potency of the chromophore conjugated DNA oligonucleotides as antigene and antisense gene repressors was evaluated. The effect of geometry, bulk and ¥ð-electron density of a series of chromophores, tethered at the 5'-end of oligonucleotides, as well as the effect of the linker nature, length and the attachment site of the chromophore to the oligo were explored based on the stability of

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9

Wales, David John. "Some theoretical aspects of cluster chemistry." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253725.

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10

Newman, P. A. "Some mechanistic studies in organomolybdenum chemistry." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355790.

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11

Jayaweera, G. D. S. A. "Some aspects of beta-lactam chemistry." Thesis, University of Newcastle Upon Tyne, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370619.

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12

Parkington, M. J. "Some chemistry of the carbonyl dihalides." Thesis, University of Sussex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384721.

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13

Galley, Carl Maurice Swedler. "Some chemistry of pyridines and pyridones." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412833.

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14

Haussmann, Philip Christof. "Some adventures in dynamic covalent chemistry." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1782063151&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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15

Vaughan, Owen John. "Chemistry of some hexadentate aminocarboxylate complexes." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47694.

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16

Derbyshire, Diana Jane. "The chemistry of some heteroaryltin compounds." Thesis, Sheffield Hallam University, 1986. http://shura.shu.ac.uk/19555/.

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The objective of this study was to prepare a series of previously unreported heteroaryl organotin compounds bearing thienyl and furyl substituents, where the heteroaryl group is bound to tin via a heteroaromatic ring carbon atom. In particular, compounds bearing, respectively, two and three heteroaryl groups were of greater interest, as diorgano- and triorganotin compounds have previously been found to be significant in terms of their biological applications. The desired compounds have been prepared and subsequently characterised by spectroscopic, chemical, and analytical techniques. (Some of

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17

Cathey, Christopher. "Some studies in osmium cluster chemistry." Thesis, University of Cambridge, 1994. https://www.repository.cam.ac.uk/handle/1810/272644.

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18

Simcox, Michael Thomas. "Some aspects of nitrogen heterocyclic chemistry." Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/10544.

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Chapter One reviews the use of scandium and lanthanide trifluoromethanesulfonates (triflates) in organic synthesis. Their ability to act as Lewis acids and so promote a wide variety of reactions are illustrated. In particular the review highlights the advantages of scandium and lanthanide triflates over more conventional Lewis acids, such as aluminium(I1I) chloride. Chapter Two describes the use of scandium and lanthanide trifiates in the reaction of acetals with amines to produce imines. The extension of this methodology to the synthesis of nitrogen-containing heterocycles such as isoindolone

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19

Unsworth, Christine. "The chemistry of some triphenylmethane dyes." Thesis, University of Central Lancashire, 1991. http://clok.uclan.ac.uk/19774/.

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A comprehensive series of Pyrrole Green dyes containing substituents in the 2-, 3- and 4-positions of the phenyl ring have been synthesised from the relevant carbinols. The steric and electronic effects of the substituents on the visible absorption spectra of the dyes have been examined and linear correlations between A max and appropriate Hammett substituent constants have been established. The rates of hydrolysis of the 4-diethylamino substituted analogue of Pyrrole Green and some 4 1 ,4 11 -bis(N-ethyl-N- 2,2, 2-trifluoroethyl)aminotriphenylmethyl dyes have been studied under a range of dif

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20

Brogden, Peter John. "Some chemistry of chromenes and chromanones." Thesis, University of Central Lancashire, 1986. http://clok.uclan.ac.uk/20652/.

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A range of 2-substituted, symmetrically and unsymmetrically 2,2- disubstituted and 2-spiro-annulated chroman-4-ones has been synthesised by the pyrrolidine catalysed condensation of 2-hydroxyacetophenones with aldehydes and ketones. The synthesis has been extended to yield 5-, 6, 7- and 8- substituted chromanones and the 5,6- and 7,8-benzologues. Additional chroman-4-ones have been prepared by the Fries rearrangement of aryl 3-methylbut-2-enoates. An n.m.r. analysis of chroman-4-ones has revealed that unsymmetrical substitution at C-2 leads to a preference for one conformer, whereas symmetrica

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21

Masangane, Phindile Clemintine. "Some chemistry of sterically hindered tetrasilylmethane derivatives." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369193.

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22

Spensley, C. R. C. "Some selective studies in synthetic organic chemistry." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371583.

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23

招桂鳳 and Kwei-fung Chiu. "Syntheses and chemistry of some xanthone derivatives." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31234768.

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24

Compton, Neville A. "Some aspects of transition metal bismuth chemistry." Thesis, University of Newcastle Upon Tyne, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244895.

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25

Macpherson, I. "Some metallaborane chemistry of molybdenum and tungsten." Thesis, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376799.

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26

Nestor, Karl. "Some new chemistry of iridaboranes and iridaheteroboranes." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330000.

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27

Whittaker, Stephen Mark. "Some chemistry of sterically hindered organosilicon compounds." Thesis, University of Salford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239973.

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28

Russel, A. T. "Stereocontrol in organic chemistry : Some new approaches." Thesis, University of Salford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381701.

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29

Apte, S. C. "The aquatic chemistry of some metalloid elements." Thesis, University of Southampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304812.

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30

Prior, Neville D. "Some organometallic chemistry of osmium carbonyl clusters." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257045.

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31

Lunniss, Julie Amanda. "Organometallic chemistry of some hydrido osmium cluster." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279819.

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32

Chiu, Kwei-fung. "Syntheses and chemistry of some xanthone derivatives /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17506633.

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33

Handley, Paul Newton. "The chemistry of some Australian natural products /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16940.pdf.

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34

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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35

Jones, Steven Andrew William. "Some aspects of the chemistry of haloboranes." Thesis, Royal Holloway, University of London, 1986. http://repository.royalholloway.ac.uk/items/54c648f4-2340-41f5-81f4-1b39429eafc6/1/.

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The reaction between polyhalomethanes and the borane-dimethyl sulphide complex (BMS) was investigated. cx4+ bh3.s(ch3)2 xbh2.s(ch3)2 + hcx3The reaction between BMS and tetrachloromethane (or tribro-mochloromethane) followed the kinetic form, -d(BMS) / dt = k(BMS) (XCCl3). On the basis of solvent effects and inhibition experiments the following mechanism was proposed; (1) (CH3)2S.BH3 + Initiator (CH3)2S.BH2 + product(2)(CH3)2S.BH2. + XCY3(CH3)2S.BH2X +CY3(3) (CH3)2S.BH3 + CY3(CH3)2S.BH2 + HCY3. The observed relative ease of displacement for the halogen-hydrogen transfer are I > Br > Cl"F. This

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36

Massey, Anju Deepali. "Some chemistry of ruthenium and osmium clusters." Thesis, University of Cambridge, 1990. https://www.repository.cam.ac.uk/handle/1810/273135.

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37

Griffiths, Clare. "The organometallic chemistry of some ethynylpyridine complexes." Thesis, University of Cambridge, 2003. https://www.repository.cam.ac.uk/handle/1810/272042.

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38

Chan, Yohan. "Some aspects of the chemistry of resorcinarenes." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/34718.

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This thesis has been divided in three sections. The first chapter contains a review of resorcinarene chemistry. The second chapter contains the results and the discussion and the experimental details are provided in the third chapter. The first part of chapter two contains the results and discussion related to the synthesis of benzoxazines derived from resorcin[6]arene and resorcin[4]arene and the diastereoselectivity observed in the syntheses. The second part of chapter two describes the synthesis of inherently chiral resorcinarenes using non-chiral 3-alkyloxyphenols, the synthesis of benzoxa

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39

Rechka, J. A. "Some aspects of the chemistry of diazoalkanes." Thesis, University of Stirling, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370539.

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40

Misra, M. C. "Some palladium and platinum chemistry involving divalent amides of germanium or tin; and some aspects of lithium amide chemistry." Thesis, University of Sussex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373154.

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41

Dioumaev, Vladimir K. "Chemistry of some cation-like silyl zirconocene complexes." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=42014.

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The aim of this study was to explore applied and mechanistic aspects of the silane dehydropolymerization reaction catalyzed by cationic early transition metallocene compounds. This problem was dealt with by a combination of spectroscopic techniques, kinetic studies, and trapping of reaction intermediates. The results of this integrated approach allow the proposal of a new redox mechanism for the dehydropolymerization reaction which explains and predicts the reactivity and selectivity of cationic early transition metal catalysts.<br>The novel zirconocene complexes $ rm lbrack Cp sp prime sb2 Zr

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42

Wahrenberger, Christoph Martin. "Some aspects of the chemistry of volcanic gases /." Zürich : Swiss Federal Institute of Technology (ETHZ), 1997. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12252.

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43

Dioumaev, Vladimir K. "Chemistry of some cation-like silyl zirconocene complexes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0023/NQ29921.pdf.

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44

Mehlman, Stephanie A. "Modeling mixtures in chemistry, some nonlinear optimization problems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ36370.pdf.

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45

Khattar, Rajesh. "Aspects of organometallic chemistry of some osmium clusters." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328690.

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46

Siriwardene, D. K. "Some organometallic chemistry of tungsten and related studies." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382672.

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47

White, David James. "The coordination chemistry of some multidentate thioether ligands." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239238.

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48

Rawle, Simon Charles. "The coordination chemistry of some multidentate thioether ligands." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329963.

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49

Lennon, Sean Patrick. "Some aspects of the chemistry of 1,2,3,-triazoles." Thesis, University of Stirling, 1987. http://hdl.handle.net/1893/21430.

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In a wide rang1ng reaction dimethyl diazomalonate reacted with pr1mary amines to yield the corresponding ammonium salts of 5-hydroxy-I,2,3-triazoles in high yields. On acidification of these salts the free 5-hydroxy-I,2,3-triazoles were obtained quantitatively. When the 5-hydroxy-I,2,3-triazoles were isolated, they were found to be contaminated with «-diazoamides. These diazoamides arise from Dimroth Rearrangement of the 5-hydroxy-triazoles. This Rearrangement was thoroughly investigated and mechanisms were suggested for the base induced cyclisation of diazoamides ) salts of 5-hydroxy-triazole

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50

Adams, C. "The chemistry of some heavy transition metal organometallics." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595343.

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The thesis is concerned with the synthesis of some new organometallic and co-ordination compounds of platinum (in the main), tungsten and gold. Chapter 1 contains an overview of the field of platinum σ - acetylide chemistry from its origins to the present day, looking at structural types and the properties of this kind of compound. Chapter 2 contains details of the synthesis and characterisation of some novel bipyridyl containing platinum acetylides of the form <I>cis</I>-(<I><SUP>t</SUP></I>bu<SUB>2</SUB>bipy)Pt(-C≍C-R)<SUB>2</SUB> (where R = Ph.<I>p</I>-C<SUB>6</SUB>H<SUB>4</SUB>-CH<SUB>3</S

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