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Dissertations / Theses on the topic 'Thiourea'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Ngo, Thi Thuy Duong. "Chiral thioureas, thiourea-phosphines and amines derived from biomass : synthesis and applications in asymmetric organocatalysis." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS476.

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Cette thèse porte sur la préparation de nouveaux catalyseurs chiraux à partir de composés naturels issus de la biomasse, et leurs applications en organocatalyse asymétrique. La première partie décrit la synthèse de thiourées énantiomériquement pures dérivées de l'isosorbide et l’isommanide. Ces thiourées ont été évaluées comme catalyseurs organiques dans des réactions asymétriques de Friedel-Crafts, d’alkylation, d’addition de type aza-Michael, d’hydroamination et de type Morita-Baylis-Hillman (MBH). Les meilleurs résultats en termes de réactivité et d’induction asymétrique, ont été obtenus da

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2

Broan, Christopher John. "A mechanistic study of the acid and base catalysed reactions of thiourea, 1-substituted thioureas and 1,3 -disubstituted thioureas with 1,2-diketones." Thesis, University of St Andrews, 1989. http://hdl.handle.net/10023/14978.

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Thiourea, 1-substituted thioureas and 1,3-disubstituted thioureas react under acidic or basic catalysis with 1,2-diketones to give a wide variety of products. The nature of the product or products depends on the conditions used, the degree of substitution of the thiourea and on the nature of the aromatic or aliphatic groups attached to the dicarbonyl unit of the diketone. The mechanisms of formation of the various products have been investigated by a variety of techniques, including the determination of rate equations by ultraviolet spectroscopy, the influence of side group substituents on the

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3

Brennan, Nicholas Frederick. "Structural studies of thallium(l)-thiourea complexes." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-02202007-173756.

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4

MESTNIK, SONIA A. C. "Separacao do Mo-99 do Te-132 usando tioureia como agente complexante .Aplicacao a separacao do Mo-99 dos produtos de fissao." reponame:Repositório Institucional do IPEN, 1987. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9881.

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5

Apps, James Frederick Shuan-Liang. "Synthesis and application of thiourea-S,S-dioxide derivatives." Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/53126/.

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The structure and synthesis of N,N'-disubstituted thiourea-S,S-dioxides were investigated experimentally and computationally. Hydrogen peroxide oxidation of acyclic and cyclic N,N'-dialkylthioureas furnished S,S-dioxides in agreement with computational predictions. Some s,S,S-trioxides were also isolated. An X-ray crystallographic study of N,N'-diisopropylthiourea dioxide, fIrst synthesised in this work, verilled computational models. The prediction of a stable N,N'-diarylthiourea dioxide derivative was supported by successful isolation of the dioxide. The application of N,N'-diisopropylthiour

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6

Mebrahtu, Fanuel M. "Transport and extraction of Au(lll) using thiourea ligands." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50206.

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Thesis (MSc)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: A series of di- and mono-substituted acyl(aroyl) thioureas were examined for the extraction and transportation of Au(III). Two-phase metal ion extraction experiments were employed to investigate the extraction behaviour of these ligands. The effect of varying ligand concentration on the extraction trend of these ligands was investigated. The results show that the different substituent groups on the benzoyl ring can affect the extraction pattern of the metal. Furthermore, the alkyl substituents on the thiourea moiety and va

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7

Nguyen, Thi-Huong. "Synthèse de nouveaux catalyseurs chiraux à base de la L-proline. Applications en catalyse asymétrique." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112382.

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Depuis de nombreuses années, les phosphines chirales multifonctionnelles se sont révélées être des outils synthétiques puissants en organocatalyse asymétrique. Ces catalyseurs qui contiennent un site de base de Lewis et un site d'acide de Bronsted, ont reçu une attention particulière en raison de leur efficacité pour créer des liaisons C-C avec de très bonnes énantiosélectivités. A notre connaissance, la synthèse d'organocatalyseurs de type thiourée-phosphine dérivés de la (L)-proline n'a jamais été décrite dans la littérature. Ce sujet de thèse concerne la synthèse d'une nouvelle famille d'or

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8

Ghebregziabiher, Berhe Haile. "Synthesis of chiral thiourea ligands and their transition metal complexes." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53610.

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Thesis (MSc)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: Modification of chitosan with benzoylisothiocyanate was attempted, however due to solvent problem the study was left incomplete till appropriate solvent is designed. N,N-diethyl-N -camphanoylthiourea (HL8), N-piperidyl-N '-camphanoylthiourea (HL9), N-pyrrolidyl-N -camphanoylthiourea (HL10) and N,N-diethyl-N -adamantylcarbonyl thiourea (HL11)have been synthesised and characterised for the first time. Two of these ligands HL8 and HL11, were used to form a number of transition metal complexes, namely H30+{fae-[Co(L8-S,Obn, c

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9

Rampalakos, Konstantinos. "Asymmetric synthesis with vapol derivatives and novel chiral thiourea organocatalysts." Diss., Connect to online resource - MSU authorized users, 2008.

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10

Zhang, Hong-Guang. "Some aspects of the use of thiourea in gold processing." Thesis, Zhang, Hong-Guang (1997) Some aspects of the use of thiourea in gold processing. PhD thesis, Murdoch University, 1997. https://researchrepository.murdoch.edu.au/id/eprint/52720/.

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Thiourea is a potential alternative for cyanide in gold processing. In an acid solution of thiourea containing an oxidant such as iron(III) ions, gold can be readily dissolved as the gold thiourea complex. Although the thiourea leaching process has been studied quite extensively, the fundamental electrochemistry associated with this process remained unexamined. In addition, the method for the recovery of gold from thiourea solutions has received relatively little attention. This thesis presents a study of these aspects. The results from a detailed electrochemical study of the dissolution o

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11

N'guessan, Job. "CORROSION INHIBITION OF 1018 STEEL IN CARBONIC ACID SOLUTIONS (THIOUREA)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/291227.

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12

Vieira, Eduardo Guimarães [UNESP]. "Síntese e caracterização de híbridos inorgânico-orgânicos funcionalizados com tiouréia e 2,2’-dipiridilamina: aplicação em adsorção de íons metálicos, pré-concentração e catálise." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/97900.

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Made available in DSpace on 2014-06-11T19:29:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-28Bitstream added on 2014-06-13T19:38:12Z : No. of bitstreams: 1 vieira_eg_me_ilha.pdf: 2027105 bytes, checksum: 336dfe116968957d19893c65b14a173e (MD5)<br>Este trabalho descreve a síntese e caracterização da sílica gel 60 Å da Merck (SGP), com tamanho de partícula de 0,063-0,200 mm (70-230 mesh ASTM) funcionalizada com tiouréia-propil (SG-Pr-TIOU) e a síntese e caracterização da sílica gel e do silsesquioxano quimicamente modificados com 2,2’-dipiridilamina-propil grupos SG-Pr-DPA e T8-P

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13

Kyne, Graham M. "Rational design and synthesis of receptors for carboxylates." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326397.

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14

Vieira, Eduardo Guimarães. "Síntese e caracterização de híbridos inorgânico-orgânicos funcionalizados com tiouréia e 2,2'-dipiridilamina : aplicação em adsorção de íons metálicos, pré-concentração e catálise /." Ilha Solteira, 2013. http://hdl.handle.net/11449/97900.

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Orientador: Newton Luiz Dias Filho<br>Banca: Roberto da Silva<br>Banca: Nilva Ré Poppi<br>Resumo: Este trabalho descreve a síntese e caracterização da sílica gel 60 Å da Merck (SGP), com tamanho de partícula de 0,063-0,200 mm (70-230 mesh ASTM) funcionalizada com tiouréia-propil (SG-Pr-TIOU) e a síntese e caracterização da sílica gel e do silsesquioxano quimicamente modificados com 2,2'-dipiridilamina-propil grupos SG-Pr-DPA e T8-Pr-DPA respectivamente. Os materiais SG-Pr-TIOU e SG-Pr-DPA foram caracterizados por: espectroscopia na região do infravermelho (FTIR), ressonância magnética nuclear

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15

Paisner, Kathryn A. 1983. "Crystal Engineering with Thioureas: A Structure-Based Inquiry." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/11583.

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xviii, 724 p. : ill. (some col.)<br>Structural trends applicable to crystal engineering were studied in three classes of thiourea-based compounds. The aim of the study was to identify, predict, and ultimately design reliable single-molecule structural features, which could then be used to engineer crystals with desirable properties. In one class of compounds, this goal was achieved: N-alkyl and N-aryl derivatives of N,N'-bis(3-thioureidopropyl)piperazine adopted an identical conformation in the solid state, which resulted in near-identical crystal packing. A second class of closely related com

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16

Zheng, Zhimin. "Fundamental studies of the anodic behavior of thiourea in copper electrorefining." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ61214.pdf.

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17

Blackburn, Anna Louise. "Thiourea containing bipyridine transition metal complexes for the recognition of anions." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602439.

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This research thesis considers the design and synthesis of a range of thiourea bipyridyl complexes and their use as anion binding receptors. A range of isothiocyanate precursors were synthesised from a reaction employing carbon disulphide. These precursors were then coupled with 5-aminomethyl-2,2’-bipyridine to prepare a group of novel bipyridyl Iigands each containing at least one thiourea functionality. Three of the Iigands were successfully reacted with [Re(CO)5Br] to create three dinuclear rhenium{l} complexes. All of the Iigands were successfully reacted with [Ru(bpy)2Cl2] to yield eight

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18

Koovits, P. J. "Development of an enantioselective reductive nitro-Mannich reaction using thiourea catalysis." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1388704/.

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The introductory chapter of this thesis describes in detail the chemistry of the nitro-Mannich reaction from its inception to the current “state of the art”. Additionally, the products of the nitro-Mannich reaction and their uses in synthesis are also discussed. The final section of the introduction deals with the use of thiourea organocatalysis and its application in synthetic transformations using imines or nitroalkenes as electrophiles. The results and discussion initially focuses on the development of a racemic reductive nitro-Mannich reaction. It has been found that when using Superhydrid

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19

Nguyen, Hung Huy [Verfasser]. "Complexes of rhenium and technetium with chelating thiourea ligands / Hung Huy Nguyen." Berlin : Freie Universität Berlin, 2009. http://d-nb.info/1023749661/34.

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20

Rashdan, Suad Ahmed. "Switchable N-pyridyl-thiourea/urea acyclic and macrocyclic compounds as anion receptors." Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442769.

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21

Mullaney, John Connor. "Weak intermolecular interactions of imidazole, urea and thiourea studied by microwave spectroscopy." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/4022.

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Microwave spectroscopy is a powerful spectroscopic tool in determining the structure of gas phase molecules. The microwave spectra of imidazole, urea or thiourea containing complexes such as (C3N2H4)2, (H2N)2CO...HNCO, (H2N)2CO...C3H4N2, and H2O...CS(NH2)2 have been recorded. The spectrum of various isotopologues have been measured in order to determine structural information. The geometry of these weakly bound complexes is investigated, alongside the nature of the weak intermolecular interactions present. A chirped-pulse Fourier transform microwave spectrometer (CP-FTMW) has been used in the

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22

Yang, Min. "Explorations on transition metal-catalyzed enantioselective cyclization reactions and applications of thiourea ligands." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B36784527.

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23

Hof, Kira [Verfasser]. "Non-Covalent organocatalysis utilizing thiourea derivatives : understanding and creating organocatalyzed reactions / Kira Hof." Gießen : Universitätsbibliothek, 2014. http://d-nb.info/1068589736/34.

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24

Yang, Min, and 楊敏. "Explorations on transition metal-catalyzed enantioselective cyclization reactions and applications of thiourea ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B36784527.

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25

Yang, Die Daisy. "Development of polymers for electroplating waste water purification, polymer-supported reagents for organic synthesis and heterogeneous catalysts for aerobic alcohol oxidation reactions." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B39848887.

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26

SOTO, VICENTE PAUL JUAREZ. "SELECTIVE FLOTATION OF MOLYBDENITE USING CHLORO ACETIC ACID AND THIOUREA IN THE CHALCOPYRITE DEPRESSION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=31417@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Os minérios de cobre-molibdênio são beneficiados juntos normalmente pelo processo de flotação com a ajuda de coletores sulfidrílicos de relativa seletividade. Os concentrados bulk obtidos devem ser processados com o intuito de remover aqueles coletores empregados, pois eles são prejudiciais na etapa de separação por flotação diferencial, ou seja, na obtenção de concentrados de molibdênio de alta qualidade com baixos conteúdos de cobre e ferro. O processo de flotação bulk é rea

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27

Svarovsky, Serge A. "Structure, stability and reactivity of small organic sulfinic and sulfonic acids toxicological implications ; Role of charge transfer complexes in oxidation cleavage of benzpinacols by iron (III) trispenanthroline /." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1231.

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28

Valenzuela, Guerrero Patricia Jazmin. "Effect of thiourea on the dissolution of chalcopyrite in acidic ferric solutions at different temperatures." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/64167.

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The full abstract for this thesis is available in the body of the thesis, and will be available when the embargo expires.<br>Applied Science, Faculty of<br>Materials Engineering, Department of<br>Graduate

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Grunwald, Anna Charlott [Verfasser]. "Metal Complexes with Tripodal and Chelating Thiourea Ligands towards Nuclear Medical Imaging / Anna Charlott Grunwald." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/123367918X/34.

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30

Franklin, Constance D. "A Novel Synthesis and Subsequent Decyclization of Iminothiozolidinones: Expansion of Thiourea Chemistry for Biological Applications." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4853.

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Small molecule synthesis has become a valuable tool in the study of biological systems. Biologically active compounds can be designed based on well-characterized endogenous systems or they can be found through the screening of large libraries of small molecules. This work involves the development of a small library of cyclic thiourea-based small molecules by use of an unreported synthetic pathway. Briefly, parent thioureas were cyclized by reaction with bromoacetyl bromide, and one or two isomeric heterocycles were found to form. Further studies indicated that the reaction could be easily mani

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31

Kong, Julie. "Design, synthesis and applications of new chiral bifunctional iminophosphorane - thiourea organocatalysts. Organophotocatalytic addition of unactivated alkenes with silicon enolate." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF018.

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Ce travail de thèse porte sur le développement de nouveaux organocatalyseurs chiraux bifonctionnels et leurs applications en organocatalyse asymétrique. Pour ce faire, nous avons d'abord étudié la conception et la synthèse de nouveaux organocatalyseurs chiraux possédant une fonction iminophosphorane, d'une part et une fonction donneuse de liaison hydrogène, d'autre part. Ainsi, plusieurs familles d'organocatalyseurs chiraux bifonctionnels à base de L-proline et d'acide (S)-pyroglutamique ont été synthétisées en quelques étapes avec des rendements globaux modérés à bons. Ces nouveaux catalyseur

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32

Ono, Marcos Akio. "Influência da tiouréia no efeito clareador do peróxido de hidrogênio." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/154930.

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Al-Riyahee, Ali. "An exploration of the synthesis, coordination chemistry and properties of novel thiourea ligands and their complexes." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/94404/.

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In order to highlight the presentation of this thesis and to provide more detailed investigations, the thesis was separated into five chapters according to the sequence of work. Chapter One: This chapter gives an overview of the coordination chemistry of different metal complexes focusing on Cr(III), Ni(II), Cu(II), and Zn(II) ions with common, uncommon, rare ligands and their geometric preferences. A brief introduction to magnetic susceptibility and their magnetic properties are also discussed. The cyclic voltammogram and the various types of redox processes are explained. Different electroni

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Chakraborty, Sourav. "Molecular Probes for Biologically Important Molecules: A Study of Thiourea, Hydroxyl radical, Peroxynitrite and Hypochlorous acid." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1132.

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Numerous chemical species are important to the health of biological systems. Some species can be beneficial at low doses and harmful at high doses. Other species are highly reactive and trigger serious cell damage. Improved methods to detect the presence and activity of such species are needed. In this work, several biologically important species were studied using appropriate analytical techniques. Fluoride is an important species in human physiology. It strengthens teeth and gives protection against dental caries. However, elevated concentrations of fluoride in the body can lead to he

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Jones, Charlotte E. S. "Enantioselective homogeneous catalysts for the synthesis of fluorinated organic compounds." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2611.

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This thesis is divided into three main results chapters that reflect the path my research took. In the first results chapter, the first organocatalyst for the carbonyl-ene reaction was discovered and found to give high conversion using 1,3-bis(3,5-bis(trifluoromethyl)phenyl)thiourea. Various carbonyl and alkene precursors were examined in the ene reaction in both catalysed and uncatalysed reactions. It was found that ene reactions using fluoral and ethyl trifluoropyruvate give higher rates of reaction when compared to other carbonyl compounds. A novel enantiopure thiourea was synthesised and t

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Nikjoo, Dariush. "Design and Synthesis of a Small Set of Thiourea-based Compounds as Inhibitors of AChE1 from Mosquitoes." Thesis, Umeå universitet, Kemiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-92551.

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De, Beer Marna. "In vitro antiplasmodial activity of an optimised series of alkylated (bis)urea and (bis)thiourea polyamine analogs." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/36823.

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The malaria parasite, Plasmodium falciparum, exhibits genetic plasticity such that it increasingly develops resistance to current antimalarial drugs, especially in Southeast Asia where multi-drug resistance (MDR) threatens the last line of antimalarial drugs (1, 2). This obstructs the effectiveness of most of the current antimalarial drugs including the quinolines, antifolates and artemisinins (3). Therefore, there is an urgent need for innovative strategies to develop novel antimalarial drugs to eradicate the disease. Recently, (bis)urea and (bis)thiourea symmetrical, terminally alkylated pol

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Zamboulis, Alexandra. "Silices hybrides pour l'organocatalyse asymétrique." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2010. http://www.theses.fr/2010ENCM0004.

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L'organocatalyse asymétrique est un domaine en plein développement. L'immobilisation de ce type de catalyseurs pourrait présenter de multiples avantages. Ces travaux de thèse s'intéressent à la préparation de silices hybrides organiques/inorganiques par voie sol-gel et aux applications de ces matériaux en organocatalyse asymétrique. La première partie du manuscrit est consacrée à une présentation bibliographique du sujet. Dans la deuxième partie, l'utilisation de la L-proline comme modèle est décrite. Des matériaux contenant un fragment L-proline ont été préparés et leurs performances catalyti

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Yang, Die Daisy, and 楊蝶. "Development of polymers for electroplating waste water purification, polymer-supported reagents for organic synthesis and heterogeneouscatalysts for aerobic alcohol oxidation reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B39848887.

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Li, Cong. "The preformulation and formulation development for the transungual delivery of the antifungal drug econazole nitrate." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/340105.

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Pharmaceutical Sciences<br>Ph.D.<br>Onychomycosis is fungal infection of toe nails or fingernails caused by a fungal microbe that invades the nail bed. It is the most common disease of the nails and constitutes about a half of all nail abnormalities and may affect toenails or fingernails, but toenail infections are particularly common. It occurs in about 10 percent of the adult population. The most common symptoms of fungal nail infection are thickening and discoloration of the nail. Treatment of onychomycosis is challenging because the infection is embedded in the nail making it difficult for

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Habtu, Michael M. "A study of the transport, extraction and co-ordination chemistry of a number of thiourea ligands with a series of transition and post-transition metal ions." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/97374.

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Thesis (MSc)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: In this study, a number of mono- and di-substituted acyl(aroyl)thioureas were investigated for potential application as specific carriers (ionophores) for the transport and extraction of Ag(l) from a mixture of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Pb(lI) ions. The experimental arrangement for the transport experiments employed a liquid membrane set up involving a 3-phase system - 2 aqueous phases (source and receiving phase) separated by a chloroform membrane incorporating the ligand. Competitive metal ion transport

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42

Nickerson, David M. "Unique Reactivity Patterns of Enhanced Urea Catalysts." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1395859006.

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43

Günler, Zeynep Inci. "Primary amine thioureas in asymmetric organocatalysis." Doctoral thesis, Universitat Rovira i Virgili, 2016. http://hdl.handle.net/10803/396191.

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Aquesta tesi es centra en organocatalitzadors de tipus tiourea amina primària (PAT). L’addició de Michael d’acetona a nitroestiré catalitzada per tiourees amina primària va ser estudiada en detall. Els efectes sinergístics de múltiples additius (aigua i àcid acètic) en aquesta reacció varen ser determinats mitjançant anàlisi espectroscòpica de 1H NMR. Els nostres estudis mecanístics van mostrar que l’àcid acètic facilita la hidròlisi dels intermedis d’imina, donant lloc a la catàlisi, i minimitza la formació del subproducte de doble addició. Per la seva banda, l’aigua alenteix la reacció però

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44

Ortayli, Oytun. "Asymmetric Synthesis Of 1,4-diamine Based Chiral Ligand And Organocatalyst And Their Applications." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612335/index.pdf.

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Novel 1,4-chiral diamine ligand possessing a trans-9,10-dihydro-9,10-ethanoanthracene backbone was synthesized. The synthetic plan involves first LiAlH4 reduction of the Diels-Alder adduct obtained by reaction of dimenthyl fumarate and anthracene, which is followed by reacting the corresponding alcohol and subsequent attachment of mesylate and triflate units to get good leaving groups which are available substances for introducing nitrogen units via SN2 type reactions. Consequently, by using dimesyl ester and ditriflate esters five catalysts 27, 29, 30, 33 and 38 were synthesized. The first fo

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45

Saglam, Guluzar. "Synthesis Of Novel Chiral Thiourea Derivatives And Their Applications, Synthesis Of Some Hdac Inhibitors, Addition Of Acyl Phosphonates To Ethylcyanoformate." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609265/index.pdf.

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The thiourea derivatives have become a main focus of research in asymmetric synthesis as an organocatalyst in recent years. In the first part, the thiourea catalysts are synthesized starting from easily available L-tartaric acid and application of the catalysts to some addition reactions showed no significant asymmetric induction. A number of HDAC inhibitors have been developed as anti-cancer agent at the present time.In the second part, some aryl butenoic acid derivatives are synthesized as HDAC inhibitors starting from substituted benzaldehyde and pyruvic acid. The HDAC activity studies sho

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46

Kucukdisli, Murat. "Asymmetric Synthesis Of Chiral Camphor Fused Pyridine Type Novel Organocatalysts." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610790/index.pdf.

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Chiral pyridines as organocatalysts have been used in asymmetric organic synthesis in recent years. The asymmetric synthesis of camphor fused pyridine type novel organocatalysts were perfomed starting from cheap and easily available natural (+)-camphor. Using camphor fused pyridine skeleton, six organocatalysts 29, 32, 33, 38, 40, and 41were successfully synthesized. The first four nucleophilic and Lewis base catalysts 29, 32, and 33 are different P-oxides and P,N-dioxides which were tested in allylation of aldehydes via allyltrichlorosilane. L-proline amide 38 and D-proline amide 40 can be n

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47

MARTINS, ELAINE A. J. "Sintese e caracterizacao de sulfetos metalicos em baixas temperaturas por reacao solido-solido utilizando-se gerador de sulfeto." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11009.

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Made available in DSpace on 2014-10-09T12:46:52Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:58:05Z (GMT). No. of bitstreams: 1 08512.pdf: 4971310 bytes, checksum: 6e08f69ed4ae0331760f78b901cc4142 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Lin, Wing-shan, and 林穎珊. "Synthesis and biological studies of anti-cancer rhodium(II, II) carboxylates, anti-inflammatory silver(I) thiourea and microbially fabricated silver nanoparticles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206649.

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Discovery of cisplatin as an effective anticancer agent has stimulated the development of metal based medicine. The recent advances in research on platinum, ruthenium and gold complexes have received much attention in medicinal chemistry, and studies of other less explored metal complexes may reveal alternative mode of mechanism as novel therapeutic agents. A series of dirhodium(II,II) complexes with carboxylate and carboxamidate ligands and thiourea complexes of coinage metals have been prepared in this study. Their biological activities and mechanisms of action have been studied. Dirhodiu

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Besaans, Ethan Wade. "Synthesis structure-activity relationships and biological evaluation of optimised terminally alkylated (bis)urea and (bis)thiourea polyamine analogues as antiplasmodial agents." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/63227.

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The sustained control and elimination of malaria requires novel approaches to combat the emergence of drug resistance. Plasmodium falciparum causes the most lethal form of human malaria. Current therapeutics have shown decreased efficacy as a result of P. falciparum developing resistance to them. Consequently, novel antimalarial agents with new mechanisms of action are urgently needed to aid in the control and ultimate eradication of this disease and should display low resistance indices and high selectivity indices. Polyamines are involved in a variety of cellular functions including c

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Farmer, Daniel S. "The ability of thiourea to scavenge hydrogen peroxide and hydroxyl radials during the intra-coronal bleaching of blood-stained root-filled teeth /." Title page, summary and contents only, 2000. http://web4.library.adelaide.edu.au/theses/09DM/09dmf233.pdf.

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