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Dissertations / Theses on the topic 'Organic acids – Synthesis'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

Starkov, P. "Applications of boronic acids in organic synthesis." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1302408/.

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This thesis describes progress on the application of boronic acids and borate esters as catalysts and reagents in synthetic organic chemistry, focusing on two areas: one-pot enolate formation/aldol reactions and amide bond formation. Chapter 1 introduces the reader to boronic acids and derivatives thereof, their methods of preparation and their use in synthetic organic chemistry as reactants, reagents and catalysts. Chapter 2 covers current chemical methods and cellular alternatives for amide bond formation. Here, we also discuss our use of boron reagents for the activation of carboxylic acids

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2

Toom, Lauri. "Bispidine Derivatives : Synthesis and Interactions with Lewis Acids." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Universitetsbiblioteket [distributör], 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6735.

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3

Ichihara, Osamu. "Asymmetric synthesis of #beta#-amino acids." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259948.

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4

Shim, Sung Bo. "Synthesis of some novel amino acids." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293408.

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5

Chambers, Mark Stuart. "The asymmetric synthesis of thiotetronic acids." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.480554.

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6

Spivey, Alan Christopher. "The synthesis of #gamma#-amino acids." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293418.

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7

Levin, D. "The stereocontrolled synthesis of unsaturated acids." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373257.

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8

Parsons, Andrew Frederick. "The synthesis of the Kainoid amino acids." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293473.

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9

Worrall, Julia. "Asymmetric synthesis of #alpha#-heterosubstituted carboxylic acids." Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242305.

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10

Berthelot, Didier. "Synthesis of novel heterocyclic #alpha#-amino acids." Thesis, Open University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367226.

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11

Whitcombe, Nicole Jane. "The synthesis of conformationally constrained amino acids." Thesis, King's College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251584.

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12

Hooper, Peter. "Synthesis and properties of atropisomeric phosphinous acids." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368637.

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13

Mohamed, Nazim. "Synthesis of derivatized oxopiperazines from amino acids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0016/NQ44518.pdf.

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14

Christian, Paul William Nicholas. "Nitroalkenes in the asymmetric synthesis of amino acids." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267891.

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15

Visani, N. "Studies in the synthesis of unsaturated anacardic acids." Thesis, Brunel University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233350.

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16

Farthing, Christopher Neil. "The synthesis of optically active #alpha#-amino acids." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308737.

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17

Greeves, N. "Horner-Wittig synthesis of unsaturated alcohols and acids." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377835.

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18

Cai, Chaozhong. "Asymmetric synthesis of chi-constrained pyroglutamic acids, glutamic acids and prolines for peptides and peptidomimetics." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/280129.

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The recent upsurge of interest in the peptide-based drug molecules has been accompanied by a great deal of attention to the design of stereochemically defined non-proteinogenic amino acids. As a continuous effort to develop efficient syntheses of χ-constrained amino acids in our group, we recently have developed a practical methodology for the asymmetric synthesis of substituted pyroglutamic acid, glutamic acid and proline analogues, which are of important use in examining the relationships between conformation and bioactivities of biologically important peptides (e.g. DPDPE, α-MSH). The key s

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19

Rathi, Akshat Hemant. "Studies towards the synthesis of complex amino acids derived from microsclerodermins." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:ca121a22-aee7-4da5-bd0d-dc7ee6e53bea.

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This thesis describes the studies towards the synthesis of β-amino acids found in the microsclerodermins, a family of complex macrocyclic hexapeptides. These β-amino acids have four or five contiguous stereocentres and an aliphatic side-chain. The synthetic route utilised an aminohydroxylation reaction to install the most challenging moiety in the structure - the 1,2- amino alcohol. The work aimed to construct the core structure (five contiguous stereocentres) of the β-amino acids and install the side-chain later to enable the synthesis of multiple members (A, B, F, G, H and I) of the microscl

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20

Jaramillo, Forcada Tatiana. "Synthesis and biological evaluation of natural and synthetic ganoderic acids." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/43313/.

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Ganoderma lucidum also known as lingzhi or mushroom of immortality in East Asia countries, has been known for over 2000 years. Ganoderic acids (GA), which are important secondary metabolites of this mushroom, are highly oxygenated lanostane-type entities with extraordinary pharmacological properties. GA are biosynthesised from lanosterol by a still unknown mechanism. The synthesis of thirteen GA analogues and the biological evaluation of ten of them against prostate cell-lines is described in this thesis. Analogues with different functionalities at C-3, C-7, C-8, C-9, C-11, C-23, C-24, C-25 an

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21

Ramaya, Sharn. "Synthetic studies towards C-glycosyl amino acids : Part I, The synthesis of C-glycosyl amino acids using zinc reagents; Part II, Approaches towards the synthesis of C-glycosyl amino acids using an imino ene reaction." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390646.

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22

Walters, Iain A. S. "The asymmetric synthesis of #alpha#-alkyl-#beta#-amino acids." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335837.

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23

Papadopoulos, Konstantinos. "Stereospecific synthesis of biologically important non-natural amino acids." Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390922.

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24

Fader, Lee David 1974. "Design, synthesis and physicochemical properties of aromatic peptide nucleic acids." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82867.

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Synthetic methods were developed for the preparation of several structurally diverse aromatic peptide nucleic acid (APNA) monomers containing all four natural DNA bases. This set of building blocks was useful for the preparation of oligomers designed to evaluate the hybridization properties of novel peptide nucleic acid (PNA) analogues, which incorporate aromatic rings into their backbone. Protocols for the solid-phase synthesis of APNA-PNA chimeras and APNA homopolymers were also developed.<br>Thermal denaturation experiments involving APNA-PNA chimeras demonstrated that APNA backbones

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25

Groarke, Michelle J. "Synthesis of novel heterocycles from amino acids via diazocarbonyl intermediates." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322957.

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26

Middleton, Richard J. "Strategies towards the synthesis of modified amino acids and peptides." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324751.

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27

Hudson, H. V. "The synthesis of 4-oxo-4H-1-benzopyran polycarboxylic acids." Thesis, Cardiff University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354745.

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28

Birkett, Paul Richard. "Synthesis of spanning molecules capable of binding to nucleic acids." Thesis, University of Lincoln, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359038.

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29

Rose, Graeme William. "The synthesis of some 3-deoxy-α-keto sugar acids". Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/14324.

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30

Wright, Emma. "The development of organolead reagents in organic synthesis." Thesis, University of Oxford, 1995. http://ora.ox.ac.uk/objects/uuid:3cf2abd7-79f8-4963-82ad-ea3bb6eb98db.

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This thesis describes the synthesis of novel lead(IV) tetracarboxylates and the development of their use in carbon-carbon bond formation processes, with a particular emphasis on the construction of chiral, quaternary centres. Organolead(IV) tricarboxylates have been widely used in the functionalisation of a range of β-dicarbonyl compounds, and the available evidence suggests that these reactions occur by a ligand coupling mechanism. For this reason, by using chiral lead(IV) compounds, it may be possible to achieve a transfer of asymmetry in the bond formation reaction. A variety of achiral and

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31

Williams, Carys Eleri. "Synthesis of #beta#-functionalised-#alpha#-amino acids using chiral azomethine ylids." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308673.

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32

Thompson, Alison Jane. "Substrate enhanced asymmetric synthesis of the 1-aminocyclopentane-1,3-dicarboxylic acids." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299760.

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33

Turner, Debra. "The synthesis of enantiomerically pure #alpha#-amino acids using organometallic reagents." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318713.

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34

Pernia, Glen Javier. "Synthesis and binding properties of novel macrocyclic receptors for amino acids." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296273.

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35

Sawatdeenarunat, Chayanon. "Innovative waste biomass derived organic acids synthesis, immobilization, and purification system." [Ames, Iowa : Iowa State University], 2009. 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:1468158.

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36

Teoh, Euneace Ching Mei. "Synthesis of amino acids by metal-catalysed reactions." Monash University, School of Chemistry, 2004. http://arrow.monash.edu.au/hdl/1959.1/9633.

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37

Palmer, Nicholas J. "A new approach to the synthesis of #beta#-hydroxy-#alpha#-amino acids." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386884.

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38

Qiu, Wei. "Design and synthesis of conformationally and topographically constrained amino acids as peptidomimetics." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/280486.

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A major goal of peptide research has been to elucidate or understand the relationships between a peptide's three-dimensional structure and its biological activity. De Novo design of peptide mimetics requires assembling all components necessary for molecular recognition and transduction, which needs the proper choice of a template that can place the key side chain residues in 3D space. Two widely used methods are novel β-substituted amino acids and conformationally constrained secondary structure mimetics. In this thesis, we report our efforts to fulfill the aforementioned criteria in synthesiz

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39

Higgs, Laurie Stewart. "Approaches to the synthesis of macrocyclic ketones and approaches to the total synthesis of the pseudomonic acids and trinervitane." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328272.

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40

Bullous, James. "New routes to acyltetramic acids and analogues." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/16287.

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3-acyltetramic acids, such as reutericyclin, belong to a group of natural products which contain a 5-membered pyrrolidine-2,4-dione heterocycle with an acyl group at the 3-position. Molecules containing this motif have been shown to contain a wealth of desirable bio-activity such as antibiotic, antitumor, antiviral, antiulcerative, fungicidal and cytotoxic properties. The motivation for synthetic efforts towards reutericyclin and analogues is that it has been shown to have potential as an antibiotic treatment against superbug C. difficile. Our synthetic approach used a pyrroloisoxazole bicycli

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41

Karimi, Farhad. "[11C]Carbon Monoxide in Palladium- / Selenium-Promoted Carbonylation Reactions : Synthesis of 11C-Imides, Hydrazides, Amides, Carboxylic Acids, Carboxylic Esters, Carbothioates, Ketones and Carbamoyl Compounds." Doctoral thesis, Uppsala universitet, Avdelningen för organisk kemi, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2931.

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[11C]Carbon monoxide in low concentrations has been used in palladium- or seleniummediated carbonylation reactions such as the synthesis of 11C-imides, hydrazides, amides, carboxylic acids, esters, carbothioates, ketones and carbamoyl compounds. In these reactions aryl iodides have been used in most cases. However, less reactive aryl triflate, chloride and bromides were activated using tetrabutylammonium iodide. The reactivities of nucleophiles may have influence on the radiochemical yield of the 11Clabelled compounds. Carboxyamination of aryl halides using aniline derivatives yielded 10% of t

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42

Russell, Keith Casey. "Design and asymmetric synthesis of unusual amino acids for incorporation into peptide hormones." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185750.

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One of the central goals of peptide and protein chemistry is the development of peptides with specific biological, chemical, and physical properties. An important method directed towards attaining this goal is the use of conformationally restricted amino acids. The conformationally restricted amino L-isomers of 2'-methyltyrosine, 2',6'-dimethyltyrosine, erythro- and threo-2',β-dimethyltyrosine, and erythro- and threo-2',6',β-trimethyltyrosine were asymmetrically synthesized in good yields and high optical purities. The synthesis of these compounds was based on the chiral boron imidate methodol

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43

Cornellà, Josep. "Silver(I)-mediated decarboxylative transformations : benzoic acids as aryl donors in organic synthesis." Thesis, Queen Mary, University of London, 2012. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8405.

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The use of aromatic carboxylic acids as coupling agents in cross-coupling reactions has arisen in the past few years as a very useful tool for organic chemists. The generation of CO2 as the main byproduct has placed this novel approach amongst the greenest alternatives to the traditional cross-couplings, where stoichiometric metal salt waste is usually generated. This thesis contains the study of a novel decarboxylative approach towards the synthesis of C–C bonds for the formation of biaryl structures based on Ag(I) salts. The introduction contains an overview of the recent developments that h

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44

Asor, Angela. "Attempted One Pot Synthesis of Carbamates of Carboxylic Acids via Curtius Rearrangement." Youngstown State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1597093471732878.

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45

Robidoux, Sébastien. "Association of branched oligonucleotides into the i-motif and synthesis of dendrimers based on nucleic acids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0022/NQ50245.pdf.

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46

Hirner, Sebastian. "New Methodologies in Organic Chemistry: Applications to the Synthesis of α-Amino Acids and Natural Products". Doctoral thesis, KTH, Organisk kemi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11112.

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This thesis deals with the development and application of new synthetic methodology in organic chemistry. The first part describes the development of a new protocol for the synthesis of 3-pyrrolines by means of a microwave-assisted ring-expansion reaction of 2-vinylaziridines. In addition, this methodology is implemented as a key-step in a formal total synthesis of the antibiotic (-)-anisomycin. In the second part, a new methodology for the synthesis of arylglycines from Weinreb amides is described. In this procedure, a Grignard reagent is added to the iminium ion formed from the Weinreb amide

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47

Swarbrick, Martin Edward. "The aza-[2,3]-Wittig sigmatropic rearrangement and its application to the synthesis of cyclic amino acids." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267122.

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48

Gu, Xuyuan. "The design and synthesis of novel amino acids and their usein synthesis of beta-turn mimetics and their incorporation into biological active peptides." Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/289938.

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Peptide ligands represent the most important hormones and neurotransmitters in physiological processes. Although native biologically active peptides have a great potential for medical applications, they often need to be modified to overcome certain inherent problems. A new research area called peptidomimetics has been developed in the last twenty years. The first generation of β-turn mimetics was focused on mimicking the β-turn backbone. In the last decade, many types of bicyclic β-turn dipeptides (BTD) have been design and synthesized. However, these methods do not have straightforward ways t

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49

Karimi, Farhad. "[¹¹C]Carbon Monoxide in Palladium- / Selenium-Promoted Carbonylation Reactions : Synthesis of ¹¹C-Imides, Hydrazides, Amides, Carboxylic Acids, Carboxylic Esters, Carbothioates, Ketones and Carbamoyl Compounds." Doctoral thesis, Uppsala University, Organic Chemistry, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2931.

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<p>[<sup>11</sup>C]Carbon monoxide in low concentrations has been used in palladium- or seleniummediated carbonylation reactions such as the synthesis of <sup>11</sup>C-imides, hydrazides, amides, carboxylic acids, esters, carbothioates, ketones and carbamoyl compounds.</p><p>In these reactions aryl iodides have been used in most cases. However, less reactive aryl triflate, chloride and bromides were activated using tetrabutylammonium iodide.</p><p>The reactivities of nucleophiles may have influence on the radiochemical yield of the <sup>11</sup>Clabelled compounds. Carboxyamination of aryl ha

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50

Liu, Shih-Yuan 1975. "Applications of novel boron-nitrogen containing heterocycles : design and synthesis o planar-chiral Lewis acids for stereoselective organic synthesis." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/30063.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, February 2004.<br>Vita.<br>Includes bibliographical references.<br>Because Lewis acids are very versatile mediators of a variety of stereoselective organic transformations, a great deal of effort has been devoted toward the development of chiral Lewis acids. This thesis describes the design, synthesis, and applications of 1,2-azaborolyl complexes as a novel family of planar-chiral Lewis acids that can perform a wide range of stereoselective transformations. The 1,2-azaborolyl ligand is a five-membered B-N bearing heter

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