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Dissertations / Theses on the topic 'Pyrroles. Organic compounds Chemical reactions'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Chiu, Pak-kan. "Isolation of hydroxypyrrolines in the Paal-Knorr reaction; and the synthesis and properties of 3H-phrroles carrying an ester or nitrile group at C-3 /." [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12428553.

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2

楊小雯 and Siu-man Yeung. "The synthesis and reactions of 3H-pyrroles bearing methyl and aryl groups." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1991. http://hub.hku.hk/bib/B31210119.

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3

趙百勤 and Pak-kan Chiu. "Isolation of hydroxypyrrolines in the Paal-Knorr reaction; and the synthesis and properties of 3H-phrroles carrying an ester or nitrilegroup at C-3." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31231524.

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4

Sandrin, Franco. "Lewis acid catalyzed reactions of 1-benzyl-2, 5-bis (trimethylsiloxy) pyrrole." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66047.

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5

McCarten, Paul. "Synthesis and reactivity of alpha-heteroaton substituted organoiron compounds." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/30503.

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6

Liao, Xiangjun 1970. "Dielectric properties and their application in microwave-assisted organic chemical reactions." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38220.

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This study was designed to develop some predictive models for the dielectric properties of the chemicals and chemical reactions and make use of dielectric properties and microwave irradiation in the chemical reactions. Specifically, the dielectric properties of the following systems were investigated at microwave frequencies of 2450 and 915 MHz: (1) C1--C5 alcohols, (2) glucose aqueous solutions, (3) lysine aqueous solutions, (4) mimicked esterification reaction model systems of parahydroxybenzoic acid with methanol, 1-propanol and 1-butanol in the presence of para-toluene sulfonic acid as a c

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7

Sen, Subhabrata. "Sythesis of diaryl ethers and diaryl amines via Dötz benzannulation /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3030540.

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8

Mehdizadeh, Ali. "A mechanistic study of the reactions of geminal dihalides with lithium diisopropylamide (LDA)." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/27172.

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9

Crews, Everett III. "Retroaldo-trapping reactions of [beta]-hydroxy-[alpha]-phenylsulfenyl cyclohexanone and decalone derivatives and the total synthesis of the California red scale sex pheromone." Diss., Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/27404.

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10

Oh, Young-im. "Approaches to the synthesis of the oxa-bridged germacrane ring system." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/27566.

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11

Woods, Timothy E. "Elucidating the degree of selectivity for NLO surrogate attachment to model compounds and a co-polyimide using the Mitsunobu reaction /." Online version of thesis, 2008. http://hdl.handle.net/1850/7725.

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12

Rico, Joseph G. "Directed lithiations of enol ethers : stereoselective synthesis and reactions of substituted enol ethers." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/27166.

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13

Chung, Lung Wa. "Computational studies of the reaction mechanisms and stereochemistry of metal-mediated organic reactions /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202006%20CHUNG.

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14

Chung, Wan-ying Cecilia. "Development of a multipolymer reaction and polyfunctional polymeric catalysts." View the Table of Contents & Abstract, 2008. http://sunzi.lib.hku.hk/hkuto/record/B39570824.

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15

Huang, Chaofeng Harmata Michael. "Studies of 2,1-benzothiazine, silver-catalyzed rearrangement and 1,5-hydride shift." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6971.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 26, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Thesis advisor: Dr. Michael Harmata. Vita. Includes bibliographical references.

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16

Thu, Hung-yat. "Catalytic C-H bond functionalization reactions catalyzed by rhodium(III) porphyrin, palladium(II) and platinum(II) acetate complexes." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38027872.

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17

Carter, Kevin William. "Methodological and synthetic studies of [4+3] cycloaddition reactions /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9842583.

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18

Igdir, A. Cigdem. "Reinvestigation Of The Synthetic And Mechanistic Aspects Of Manganese(iii) Acetate Mediated Reactions Synthesis Of 1,2,4-trisubstituted Pyrroles Via Amination / Annulation Reactions Of Chloroenones With Chiral Amine Compounds." Phd thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607643/index.pdf.

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The first part of the thesis presents the reinvestigation of the synthetic and mechanistic aspects of manganese (III) acetate mediated reactions. The main concern about this subject was to perform a &cent<br>- acetoxylation reactions of enones and saturated systems in shorter reactions times and higher yields than the ones known in literature reproducibly. Although successful a &cent<br>-acetoxylation of a great variety of substrates have been reported so far, there are some problems associated with the use of Mn(OAc)3. Considering that there are not many simple methods for the direct acetoxyl

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19

Chen, Haoguo, and 陳浩國. "Silver catalyzed enyne cyclization reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841409.

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20

Chen, Haoguo. "Silver catalyzed enyne cyclization reactions." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42841409.

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21

鍾韻盈 and Wan-ying Cecilia Chung. "Development of a multipolymer reaction and polyfunctional polymeric catalysts." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B39707441.

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22

Thu, Hung-yat, and 杜鴻溢. "Catalytic C-H bond functionalization reactions catalyzed by rhodium(III) porphyrin, palladium(II) and platinum(II) acetatecomplexes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38798268.

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23

Lin, Xufeng. "Density functional theory studies of selected transition metals catalyzed C-C and C-N bond formation reactions." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B39359645.

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24

Li, Shuoliang. "Application of the Nazarov cyclization reaction to the synthesis of guanacastepenes and taiwaniaquinoids." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38348974.

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25

Lin, Xufeng, and 林旭鋒. "Density functional theory studies of selected transition metals catalyzed C-C and C-N bond formation reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39359645.

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26

Lobb, Kevin Alan. "Camphor derivatives in asymmetric synthesis: a synthetic, mechanistic and theoretical study." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1006770.

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A series of 3,3-ethylenedioxy-exo- and endo- bornyl esters have been prepared and subjected to α-benzylation using lithium diisopropylamide and benzyl bromide. In the exo-series of esters the diastereofacial selectivity of benzylation was found to improve (up to 34% d.e.) as the steric bulk of the O-alkyl group increased, whereas in the endo-series, a surprising decrease in stereoselectivity was observed as the steric bulk increased – an observation attributed to flexibility of the metal-coordinated endo-enolate system, compared to the relative rigidity of the exo analogues. The conformational

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27

Mciteka, Lulama Patrick. "Novel applications of Morita-Baylis-Hillman methodology in organic synthesis." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1007598.

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The overall approach in the present investigation has been to explore applications of the Morita-Baylis-Hillman (MBH) reaction in asymmetric synthesis and in the continuation of systems with medicinal potential. To this end, a series of varied camphor-derived acrylate esters was prepared to serve as chiral substrates in asymmetric Morita-Baylis- Hillman reactions. Reduction of N-substituted camphor-10-sulfonamides afforded the 3- exo-hydroxy derivatives as the major products. Acylation of the corresponding sodium alkoxides gave the desired 3-exo-acrylate esters, isolation of which was complica

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28

Li, Shuoliang, and 李碩梁. "Application of the Nazarov cyclization reaction to the synthesis of guanacastepenes and taiwaniaquinoids." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38348974.

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29

Aybey, Asuman. "Synthesis Of Chiral Lactones Via The Baeyer Villiger Oxidation Of Cyclic Aromatic Acetoxy Ketones Novel Annulation Reactions Of 2-propynyl-1,3-dicarbonyl Compounds To Form Pyrroles Addition Of Acyl Phosphonates To Diethyl Cyanophosphonate (depc)." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12610293/index.pdf.

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Chiral Baeyer-Villiger (BV) oxidation of cyclic ketones allows rapid access to asymmetric lactones as valuable intermediates in organic chemistry and frequently encountered precursors in enantioselective synthesis. In the first part, BV oxidation of functionalized ketones, especially cyclic &amp<br>#61537<br>-hydroxy and acetoxy ketones is described which could be a straightforward route to the &amp<br>#61537<br>-hydroxy lactones and &amp<br>#61537<br>-hydroxyalkanoic acid derivatives. The &amp<br>#61537<br>-acetoxylation of indanone, tetralone and chromanone derivatives by using Mn(OAc)3 fol

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30

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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31

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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32

Junior, Nelson Ferreira Claro. "Reações de sulfenilação de compostos α-sulfonil carboxílicos." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-18062015-114454/.

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A presente tese contém as reações de sulfenilação ainda não descritas na literatura de compostos α-sulfonil carboxílicos, tais como ácidos, ésteres e γ-butirolactona. Dois métodos distintos são elaborados: 1) em meio homogêneo, no caso dos ácidos α-sulfonil carboxílicos; 2) em catálise de transferência de fase, na sulfenilação dos ésteres α-sulfonil carboxílicos e da γ-butirolactona. A apresentação e discussão dos resultados é precedida por duas revisões bibliográficas. A primeira trata das reações de sulfenilação em meio homogêneo de compostos carboxílicos e de sulfon

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33

Pereira, Fernando Luiz Cardoso. "Estudos Sobre iodociclização e desidroiodação de N-benzil-beta-enaminoésteres (OU) Estudos sobre iodociclização e desidroiodação de β-enaminoésteres." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-18112015-145656/.

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Os iodo-β-enaminoésteres cíclicos 13, 14, 15 e 16 (heterociclos nitrogenados de 5 membros) foram preparados pela iodociclização dos alquenil-β-enaminoésteres 7, 8, 9 e 10, respectivamente, com modificações na metodologia. Os tempos de reação foram diminuídos e o método de purificação foi modificado. Visando à extensão da metodologia para a obtenção de heterociclos nitrogenados de 6 membros, foi testada a iodociclização dos alquenil-S-enaminoésteres 11 e 12. O composto 11 forneceu o produto esperado 17 em 51% de rendimento enquanto que o composto 12 não sofreu ciclização nestas condiç

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34

Daire, Fabrice. "Etude d'electrodes modifiees par fixation de composes de coordination sur un support conducteur du type polypyrrole : application en electrosynthese organique." Paris 6, 1988. http://www.theses.fr/1988PA066176.

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Proprietes electrochimiques des complexes co-l, cu-l, ni-l (ou l=methyl-4, bipyridine-2,2', derive du pyrrole) dans l'acetonitrile. Polymerisation electrolytique de ces complexes sur des electrodes d'or, platine et carbone. Proprietes electrochimiques du polymere co-bipyridyl-polypyrrole; utilisation dans la reduction catalytique des derives allyliques

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35

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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36

Dutra, Fernando. "Reações de halociclização de alquenil-benzil-sulfetos com bromo." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-17112015-160732/.

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Há algum tempo, o laboratório de eletrossíntese orgânica do Instituto de Química vem estudando reações de halociclização na obtenção de compostos heterocíclicos de enxofre. No presente trabalho foram utilizados γ-δ e ;-δ-ε alquenil benzil sulfetos e realizados experimentos seguindo duas metodologias diferentes: a química (reações dos substratos com bromo) e a eletroquímica (reações dos substratos com bromo gerado eletroquimicamente). Os experimentos eletroquímicos são mais vantajosos porque dispensam a manipulação de bromo que, neste método, é gerado in situ através da oxid

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37

Fejfar, José Luiz. "Resolução cinética em reações de substituição nucleofílica mediadas por catalisadores por transferência de fase derivados da efedrina, cinchonidina e quinina." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-29112018-120557/.

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Neste trabalho foram estudadas reações de substituição nucleofílica alifática de seis substratos halogenados, na presença de sais quaternários de amônio quirais (catalisadores por transferência de fase), derivados de alcalóides naturais. O sistema usado durante os trabalhos foi o sólido-líquido, sendo utilizado o tolueno como solvente do substrato halogenado. Os eletrófilos escolhidos para este trabalho foram, em sua grande maioria, compostos halogenados na posição alfa à carbonila e o nucleófilo foi o fenilmercapteto de sódio. A estrutura do substratos, as condições de reação e o tipo de cata

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38

Zambrana, Seguí Joana Maria. "Reaccions aldòliques estereoselectives amb enolats de titani de beta-benziloxi cetones quirals. Síntesi del fragment C1-C15 de l'epi-C13-tedanolida C." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/123852.

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En la present Tesi Doctoral s’han estudiat les reaccions aldòliques amb enolats de titani de cetones quirals derivades de l’èster de Roche, completant un estudi previ amb la reacció aldòlica de propionat. Així, en el Capítol 1 s’ha avaluat a fons la reacció aldòlica de l’(S)-4-benziloxi-3-metil-2-butanona. Les millors condicions de reacció impliquen l’ús de dos equivalents de TiCl4 addicionant el segon equivalent sobre l’enolat (mètode [TiCl4] + [TiCl4]) o tractant l’aldehid amb un equivalent d’àcid de Lewis i addicionant-hi l’enolat (mètode d’addició inversa). En el dos casos s’ha demostra

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39

Bedioui, Fethi. "Etude électrochimique de complexes de métaux de transition (bases de Schiff et porphyrines) en solution et sous forme d'électrodes modifiées : application à la catalyse électroassistée de réactions organiques." Paris 6, 1986. http://www.theses.fr/1986PA066338.

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Les propriétés électrochimiques des complexes co-base de Schiff (phenylene-bis(salicylideneiminoto)-co, ou Co(II)saloph, et n-methylenepropylene-bis-(salicylideneiminoto)-co, ou co-selnmedpt) et de tetraphenylporphine-co, ou CoTPP, sont utilisées pour étudier la réduction électroassistée d'halogénures organiques, Rx, avec un catalyseur fixe sur support conducteur, en milieu organique. On étudie: 1) la réduction du chlorure de benzyle électrocatalysée par des électrodes de graphite modifiées par du co-saloph et 2) l'oxydation par l'oxygène moléculaire du di-tert-butylphenol, électrocatalysée pa

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40

Mguni, Lindelo Mthabisi. "Lipase-catalysed hydrolysis of morita-baylis-hillman adducts." Thesis, 2019. https://hdl.handle.net/10539/29664.

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A dissertation submitted in fulfilment of the requirements for the degree Master of Science in Molecular and Cell Biology in the Faculty of Science, University of the Witwatersrand, Johannesburg, South Africa, 2019<br>Biocatalysis is the use of biological systems, such as enzymes, to perform chemical transformations on organic compounds. These enzymes catalyse reactions as whole cell systems or in isolated forms and have been found to exhibit high regio- and stereoselectivity towards chiral compounds. Lipases have been extensively used to catalyse kinetic resolutions of chiral compounds such

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41

Olson, Julie Ann. "Development of a tandem Diels-Alder/Pauson-Khand strategy for synthesis of tetracycles." 2010. http://hdl.handle.net/10090/15180.

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42

Vinu, R. "Kinetics Of Photo Initiated Organic And Polymer Reactions." Thesis, 2010. http://etd.iisc.ernet.in/handle/2005/1655.

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Photo-initiated reactions involve the use of ultraviolet (UV) or visible light radiation to effect chemical transformations. Some of the advantages of photo-initiated reactions over thermal or high pressure reactions include mild reaction conditions like ambient temperature and pressure, good control over the reaction by the simple switching on/off the light source, and faster reaction kinetics. Usually, semiconductor photocatalysts or oxidizing agents are used to enhance the rate of photo reactions. “Photocatalysis” involves the generation of valence band holes and conduction band electrons b

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43

Davey, Nicholas. "Development of a field portable mass spectrometer for quantitative analysis of volatile organic compounds in air." Thesis, 2016. http://hdl.handle.net/1828/7191.

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The typical strategy for atmospheric analysis of volatile organic compounds (VOCs), is to collect discrete samples which are then transported to a laboratory for analysis. This method has limited spatial and temporal resolution, and can be both costly and time consuming. To overcome these limitations, a mobile monitoring platform was developed for real-time quantitative chemical analysis. This work describes the development of membrane introduction mass spectrometer and identi es the necessary requirements to make a reliable and e ective instrument for in-situ chemical analysis. These i

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44

Garner, Susan Amy 1980. "Hydrogen-mediated carbon-carbon bond formations: applied to reductive aldol and Mannich reactions." Thesis, 2007. http://hdl.handle.net/2152/3476.

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Hydrogen gas is the cleanest and most cost-effective reductant available to mankind, and the use of hydrogen gas in catalytic hydrogenation reactions is one of the oldest and most utilized organic reactions. Although catalytic hydrogenation has been practiced in industry on enormous scale, the use of hydrogen gas as a terminal reductant in C-C bond forming reactions has been limited to processes involving the migratory insertion of carbon monoxide such as: alkene hydroformylation and the Fischer-Tropsch reaction. A significant advance to the field of synthetic organic chemistry would be the

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45

Li, Jian-yuan. "The modification of brucine derivatives as chiral ligands and its application in the asymmetric synthesis." Thesis, 2014. http://hdl.handle.net/1805/6464.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>The modification of brucine derivatives as chiral ligands and the use of a multifaceted chiral ligand, brucine diol, under different reaction conditions to produce various optical isomers is described. In Chapter 1, the generation of a number of brucine derivatives is described. Taking the advantage of brucine-diol’s excellent molecular recognition capability for multiple organic functional groups, we focused on the synthetic modifications of brucine-diol and the synthesis of brucine N-oxide. We also produced various brucine derivati

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