Relevant bibliographies by topics / Synthesis of Pyrazoles / Dissertations / Theses
To see the other types of publications on this topic, follow the link: Synthesis of Pyrazoles.

Dissertations / Theses on the topic 'Synthesis of Pyrazoles'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Synthesis of Pyrazoles.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Gormen, Meral. "Synthesis Of Ferrocenyl Substituted Pyrazoles." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12606358/index.pdf.

Full text
Abstract:
Pyrazoles have been studied for over a century as an important class of heterocyclic compounds and continue to attract considerable interest due to the broad range of biological activities they possess. The incorporation of the essential structural features of pyrazoles with a ferrocene moiety could provide new derivatives with unexpected and/or enhanced biological activities since several ferrocene derivatives have already been shown to be active against a number of tumors. For this reason, we investigated the synthesis of ferrocenyl-substituted pyrazoles, such as 1-alkyl/aryl-5-ferrocenylpyr
APA, Harvard, Vancouver, ISO, and other styles
2

ERVITHAYASUPORN, VUTHICHAI. "Synthesis and Photochemistry of Pyrano[2,3-c]pyrazoles." Digital WPI, 2006. https://digitalcommons.wpi.edu/etd-theses/228.

Full text
Abstract:
Two different synthetic approaches to the synthesis of pyrano[2,3-c]pyrazoles have been investigated. In one approach, dehydroacetic acid derivatives were treated with phenylhydrazine and methylhydrazine led to the formation of the phenylhydrazones and methylhydrazones, which undergo rearrangement in refluxing acetic acid to diketo-phenylpyrazoles and diketo-methylpyrazoles. Upon treatment with a mixture of acetic and sulfuric acid these compounds isomerize to the phenylpyrano[2,3-c]pyrazol-4-one and methylpyrano[2,3-c]pyrazol-4-one derivatives. In a second approach, phenylhydrazine and methyl
APA, Harvard, Vancouver, ISO, and other styles
3

Ervithayasuporn, Vuthichai. "Synthesis and photochemistry of pyrano[2,3-c]pyrazoles." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-042006-160619/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Demirci, Deniz. "Synthesis Of 4-phenylselenyl-1h-pyrazoles By Electrophilic Cyclization." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613910/index.pdf.

Full text
Abstract:
In this study, the synthesis of 5-ferrocenyl/aryl-4-(phenylselenyl)-1H-pyrazole derivatives was investigated since the integration of ferrocenyl and selenium moieties into pyrazole derivatives may increase their current biological activities. Initially, the starting propargyl aldehydes were synthesized from corresponding acetylenes. Subsequently, propargyl aldehydes were reacted with hydrazines to yield corresponding hydrazones. Then the in situ synthesized hydrazones were subjected to electrophilic cyclization with phenylselenyl chloride, which afforded 5-ferrocenyl/aryl-4-(phenylselenyl)-1H-
APA, Harvard, Vancouver, ISO, and other styles
5

Cooper, David Arthur. "The synthesis and characterization of some molybdenum, rhenium and rhodium complexes incorporating pyrazolylgallate ligands." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24597.

Full text
Abstract:
Several uninegative ligands based on a gallium core and incorporating pyrazolyl groups have been synthesized and their metathesis reactions with molybdenum, rhenium and rhodium halides have been studied. The bidentate pyrazolylgallate ligand [formula omitted] has been incorporated in the complexes [formula omitted]. The unsymmetric tridentate pyrazolylgallate ligands [formula omitted] display a variable reactivity towards molybdenum, rhenium and rhodium precursors. Although no complexes incorporating L⁴ were isolated, L₂ and L₃ were shown to co-ordinate facially in the octahedral complexes
APA, Harvard, Vancouver, ISO, and other styles
6

Dunham, Jason C. "Synthesis of 4-alkyl-3,5-diamino-1-phenylpyrazoles." Virtual Press, 2006. http://liblink.bsu.edu/uhtbin/catkey/1339144.

Full text
Abstract:
The goal of this project is to synthesize and purify a library of novel 4-alkyl-3,5-diamino-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazoles. These molecules are similar to other fiproles, which have been shown by Sammelson et al. to have pesticidal activities at the GABA receptor.' Fiproles are analogues of Fipronil, a very important pesticide. Replacing the cyano group normally located at the 3-position of the pyrazole ring with an amino group will change the binding potency of the phenylpyrazoles. Changes in binding produced by the changes introduced in molecular structure can create more
APA, Harvard, Vancouver, ISO, and other styles
7

Oleksik, Laurence. "Methodology for the synthesis of 4 or 5-substituted-3-perfluoroalkyl pyrazoles." Thesis, University of Leicester, 2004. http://hdl.handle.net/2381/30087.

Full text
Abstract:
Initially the perfluoroacylation of a range of commercially available vinyl ethers and conversion of the resulting perfluoroacylated enol ethers to 1-H-pyrazoles via reaction with hydrazine is reported. The selective synthesis of a range of alpha-aryl vinyl ethers using Heck chemistry is then reported. Subsequent perfluoroacylations of the vinyl ethers followed by reaction of the resulting perfluoroacyl enol ethers with hydrazine affords a range of 5-aryl-3-perfluoroalkyl pyrazoles in good yields.;Alternative methodology for the synthesis of 5-aryl-3-perfluoroalkyl pyrazoles is then described
APA, Harvard, Vancouver, ISO, and other styles
8

Poulsen, Sally-Ann, and n/a. "Pyrazolo(3,4-d)pyrimidines: Synthesis and Structure-Activity Relationships for Binding to Adenosine Receptors." Griffith University. School of Science, 1996. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050901.161632.

Full text
Abstract:
Chapter 1 of thesis is a literature review of adenosine research. The central importance of the contributions of both classical pharmacology and, more recently, molecular biology to adenosine research is demonstrated. These disciplines have enabled the classification and characterisation of adenosine receptors and as well an understanding of the physiological significance of endogenous adenosine. The significant benefits of developing therapeutics for regulation of the diverse physiological functions of adenosine, by regulation of adenosine receptors, is outlined. For this therapeutic potentia
APA, Harvard, Vancouver, ISO, and other styles
9

Poulsen, Sally-Ann. "Pyrazolo(3,4-d)pyrimidines: Synthesis and Structure-Activity Relationships for Binding to Adenosine Receptors." Thesis, Griffith University, 1996. http://hdl.handle.net/10072/365893.

Full text
Abstract:
Chapter 1 of thesis is a literature review of adenosine research. The central importance of the contributions of both classical pharmacology and, more recently, molecular biology to adenosine research is demonstrated. These disciplines have enabled the classification and characterisation of adenosine receptors and as well an understanding of the physiological significance of endogenous adenosine. The significant benefits of developing therapeutics for regulation of the diverse physiological functions of adenosine, by regulation of adenosine receptors, is outlined. For this therapeutic potentia
APA, Harvard, Vancouver, ISO, and other styles
10

Karabiyikoglu, Sedef. "Synthesis Of Ferrocenyl Substituted Pyrazoles By Sonogashira And Suzuki-miyaura Cross-coupling Reactions." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12612139/index.pdf.

Full text
Abstract:
Pyrazoles constitute one of the most important classes of heterocyclic compounds due to their interesting chemical and biochemical features. Researchers have studied many pyrazole containing structures for almost over a century in order to investigate the various biological activities possessed by these molecules. A new and important trend in these studies is to produce ferrocenyl substituted pyrazoles since ferrocene attracts considerable interest in the research field of organometallic and bioorganometallic chemistry because of its valuable chemical characteristics like high stability, low t
APA, Harvard, Vancouver, ISO, and other styles
11

Karahan, Dag Fulya. "Synthesis Of 5-ferrocenyl-4-((4-nitrophenyl)sulfenyl)-1h-pyrazoles By Electrophilic Cyclization." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613443/index.pdf.

Full text
Abstract:
Pyrazoles have been intensely studied in the design and synthesis of biologically active agents because they display considerable medicinal activities. Recent studies have shown that integration of a ferrocenyl unit with structural features of pyrazoles can result in the formation of the new products with enhanced or/and unexpected biological activity since several ferrocene derivatives have already been illustrated to be active against a number of tumors. Therefore, we have investigated the electrophilic cyclizations of the hydrazones to afford 5-ferrocenyl-4-((4-nitrophenyl)sulfenyl)-substit
APA, Harvard, Vancouver, ISO, and other styles
12

Pinar, Ayse Nur. "Reaction Of Propargyl Aldehydes With Hydrazinium Salts: Synthesis Of Ferrocenyl And Phenyl Substituted Pyrazoles." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609769/index.pdf.

Full text
Abstract:
Pyrazoles have been focus of a large number of investigations in the design and synthesis of novel biologically active agents that show remarkable medicinal activities. Although pyrazoles have been studied for over a century as an important class of heterocyclic compounds, they still continue to attract considerable attention due to the wide range of medicinal activities they possess. Recent studies have shown that combination of a ferrocenyl unit with structural features of pyrazoles can lead to products with enhanced or/and unexpected biological activity since several ferrocene derivatives h
APA, Harvard, Vancouver, ISO, and other styles
13

Santos, Nádia Alexandra Esteves. "Synthesis and evaluation of new pyrazoles, glycosylpyrazoles and rutheniumpyrazoles for antioxidant and antitumoral activity." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22521.

Full text
Abstract:
Mestrado em Biotecnologia - Biotecnologia Molecular<br>O cancro é a segunda maior razão de morte em Portugal, a seguir às doenças cardiovasculares. A quimioterapia continua a ser o tratamento mais utilizado e eficaz, no entanto o intervalo onde a dose é eficiente e ao mesmo tempo segura ainda é muito pequeno, podendo ser tóxico para o organismo do paciente. Dessa forma, a procura de novos agentes antitumorais eficientes e seguros tem sido crucial, tendo os pirazóis e os complexos de ruténio (II) um papel muito importante. Vários compostos contendo o anel de pirazol nas suas estruturas já demon
APA, Harvard, Vancouver, ISO, and other styles
14

Kivrak, Arif. "Development Of New Methods For The Synthesis Of Pyrazoles, 4-iodopyrazoles, Isoxazoles And 1,2,4-oxadiazoles." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612945/index.pdf.

Full text
Abstract:
Synthesis of five-membered heteroaromatic compounds such as pyrazoles, isoxazoles and 1,2,4-oxadiazoles are important for pharmaceutical industry and material science due to their applications. Although there are many methods to prepare such compounds, new variants continue to appear since they exhibit a wide range of biological and medicinal activities. In this thesis, new methods were developed for the synthesis of 4-iodopyrazoles, pyrazoles, isoxazoles, 1,2,4-oxadiazoles and/or 1,2,4-oxadiazepines. In the first part of the study, electrophilic cyclization of &alpha<br>,&beta<br>-alkynic hy
APA, Harvard, Vancouver, ISO, and other styles
15

Prado, Guilherme Cervi. "Study of reaction parameters in ball mill in the Synthesis of aryl(heteroaryl)-1h-pyrazoles." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/10505.

Full text
Abstract:
Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>In order to eliminate the problems related to deficient intake of vitamins folate class, many food products are being subjected to the enrichment process. Among them, all types of wheat flour must be enriched with folic acid. Therefore, it is evident the need of analytical methods for routine able to effectively determine the levels of folic acid in enriched matrix. The objective of this work was the development and validation of a rapid method for determination of folic acid added to wheat flour, using the technique of high perf
APA, Harvard, Vancouver, ISO, and other styles
16

Dengiz, Cagatay. "Acyl Azides: Application To The Synthesis Of Various Heterocycles." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613892/index.pdf.

Full text
Abstract:
Pyrazoles, isoindolinones, benzodizepinones and dihydroquinolinones are very important heterocycles for their biological properties. Many pharmaceutical agents include these units as core structures. Reactive molecules such as acyl azides, free radicals and formyl groups are used as key step reactants in these studies. Regiospesific hydrolysis and esterifications are used to reach target starting materials. Two different methodology are used for critical ring closure steps. Benzodiazepinones, and isoindolinones are obtained by base mediated ring closure reactions whereas thionyl chloride media
APA, Harvard, Vancouver, ISO, and other styles
17

Chi, Li-Jen. "Synthesis and computer-aided structural investigation of potentially photochromic spirooxazines." Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/564.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Acquah, Chris. "Syntheses and Characterization of a New Cyano-Substituted Bis(pyrazolyl)borate and its Thallium (I) Complex." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etd/3141.

Full text
Abstract:
Scorpionates are versatile and flexible ligands with a wide range of applications including catalysis, C-H bond activation, formation of new class of materials, and mimicking enzymatic reactions. This is as a result of its steric and electronic properties, and due to the relative ease with which the 3, and 5-positions of the pyrazole ring can be functionalized. In this work, we report the synthesis of a new class of scorpionate ligands known as cyanoscorpionates which can crosslink various metal centers. Thus, bis (4-cyano-3,5-diphenylpyrazolyl)borate BpPh2,4CN was synthesized and fully charac
APA, Harvard, Vancouver, ISO, and other styles
19

Keter, Frankline Kiplangat. "Pyrazole and pyrazolyl palladium(II) and platinum(II) complexes: synthesis and in vitro evaluation as anticancer agents." Thesis, University of the Western Cape, 2004. http://etd.uwc.ac.za/index.php?module=etd&amp.

Full text
Abstract:
The use of metallo-pharmaceuticals, such as the platinum drugs, for cancer treatment illustrates the utility of metal complexes as therapeutic agents. Platinum group metal complexes therefore offer potential as anti-tumour agents to fight cancer. This study was aimed at synthesizing and evaluating the effects of palladium(II) and platinum(II) complexes as anticancer agents.
APA, Harvard, Vancouver, ISO, and other styles
20

Comas-Barceló, Júlia. "Lewis acid-promoted synthesis of pyrazole building blocks." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/15943/.

Full text
Abstract:
The present work investigated copper(II)-promoted regioselective synthesis of disubstituted pyrazole scaffolds via cycloaddition reactions between sydnones and alkynes. Cu(OTf)2 has been found to mediate the formation of 1,3-pyrazoles, while Cu(OAc)2·H2O promotes the exclusive formation of the 1,4-regioisomer. Both transformations have been optimised and the scope has been explored for both reactions. A mechanistic proposal is also reported herein that has been derived from both experimental and theoretical investigations, the latter performed in collaboration with colleagues at Universidad de
APA, Harvard, Vancouver, ISO, and other styles
21

Schmitt, Étienne. "Towards the synthesis of novel heterocyclic agrophores bearing emergent fluorinated substituents." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAF056.

Full text
Abstract:
Durant ce doctorat en collaboration avec Bayer CropScience, une famille de réactifs appelés Réactifs de type Fluoroalkyl Amines (ou FARs) a été étudiée (spécialement le TFEDMA) pour réaliser ’introduction de groupes fluorés émergents (EFSs). Après une activation à l’aide d’un acide de Lewis, les sels de fluoro-iminium obtenus ont été utilisés pour la difluoroacylation d’arenes et hétéroarènes riches en électrons, ou la synthèse efficace et régiosélective de pyrazoles et d’isoxazoles possédant un groupe -CHF2 à partir d’éthers vinyliques et apparentés, d’éthers d’énol silylés ou de composés CH-
APA, Harvard, Vancouver, ISO, and other styles
22

Nakhai, Azadeh. "Synthetic studies of nitrogen containing heterocycles, particularly pyrazole and benzotriazine derivatives." Stockholm, 2009. http://diss.kib.ki.se/2009/978-91-7409-687-3/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

McFadden, Helen Georgina, and n/a. "Synthesis and herbicidal properties of some pyrazole and pyrimidine heteocycles." University of Canberra. Biomedical Sciences, 1992. http://erl.canberra.edu.au./public/adt-AUC20060918.160845.

Full text
Abstract:
Four main series of novel heterocyclic compounds were successfully syniliesised. Two of these series were found to be post-emergence herbicides with the activities of each being based on a different mode of action. The (pyrazole-4-yl)alkanones are inhibitors of protoporphyrinogen oxidase, an enzyme in chlorophyll biosynthesis, whereas alkyl 3-arylsulfonylamino- 3-methyllhio-2-(pyrimidin-2-ylcarbamoyl)acrylates and pyrimidin-2-yl 3-(2- chlorophenyl)sulfonyl-amino-3-methylthio-2-cyanoacrylamides (collectively termed "vinylogous sulfonylureas") are inhibitors of acetohydroxy acid synthase (AHAS).
APA, Harvard, Vancouver, ISO, and other styles
24

Kerr, G. "The synthesis of pyrazole C-nucleosides as potential antitumour agents." Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/1454.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Joshi, V. S. "Synthesis and structure of new organomolybdenum complexes containing pyrazole-derived ligands." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1993. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3069.

Full text
APA, Harvard, Vancouver, ISO, and other styles
26

Ozcan, Sevil. "Development Of New Synthetic Methodologies For The Synthesis Of Unusual Isocoumarin And Indole Derivatives:the Chemistry Of Homophthalic Acid." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608197/index.pdf.

Full text
Abstract:
Many heterocyclic compounds containing nitrogen, oxygen and sulfur show wide range of physiological activities and their synthesis has always been attracted the interest of chemists. The aim of this research is to develop new synthetic methodologies leading to the synthesis of new derivatives of isocoumarines, indoles, isoquinolines, benzodiazepinones and quinazolines, which have been found to show important biological activities. Starting from homophthalic acid and bishomophthalic acid the corresponding acyl azides were proposed to be synthesized, which then would be used for the synthesis of
APA, Harvard, Vancouver, ISO, and other styles
27

Smith, Duncan. "The synthesis of pyrazole C-nucleosides containing D-arabinose and D-xylose." Thesis, Heriot-Watt University, 1985. http://hdl.handle.net/10399/1617.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Panasenko, N. V. "Synthesis and fluorescence spectrum of 9-(4-pyrazolyl)decahydroacridindiones-1,8." Thesis, БДМУ, 2022. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/19545.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

DuMez, Darin David. "Synthesis and selective oxidations of rhenium hydrotris(1-pyrazolyl) borate compounds /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/8674.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

Blackburn, J. B. "The synthesis and properties of pyrazolo[4,3-B]pyridines and their evaluation as anti-inflammatory agents." Thesis, University of Sunderland, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382813.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Bertuzzi, Giulio. "Synthesis and functionalization of a lactam-pyrazole molecular scaffold as a promising anticancer compound." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9035/.

Full text
Abstract:
The importance of pyrazole and lactam-based molecules in medical and pharmaceutical fields is underlined by the multitude of active ingredients on trade, such as Sildenafil or Apixaban, by Pfizer. In this work, a synthesis of an organic molecule with promising anticancer activity has been developed. This molecular scaffold is characterized by a δ-lactam-fused pyrazolic core, with a well-known biological activity and amenable of further functionalization. The synthetic strategy adopted for the obtainment of the core was based on a 1,3-dipolar cycloaddition of a nitrilimine with an α,β-unsaturat
APA, Harvard, Vancouver, ISO, and other styles
32

Mavel, Sylvie. "Synthèses et approche pharmacologique en série Pyrazolo 1,5-D 1,2,4 triazinique." Clermont-Ferrand 1, 1992. http://www.theses.fr/1992CLF1P001.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Yazici, Ceyda. "Synthesis Of 4-iodopyrazole Derivatives." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609750/index.pdf.

Full text
Abstract:
Pyrazoles have been studied for over a century as an important class of heterocyclic compounds and continue to attract considerable interest due to the broad range of biological activities they possess. The electrophilic cyclization of the acetylenic hydrazones initiated by molecular iodine could provide new ways of synthesizing biologically active 4-iodopyrazole derivatives, which are important precursors for the synthesis of highly substituted pyrazole derivatives. For this reason, we investigated the synthesis of 4-iodopyrazole derivatives, such as 1-aryl- 5-alkyl/aryl-4-iodopyrazoles, star
APA, Harvard, Vancouver, ISO, and other styles
34

Ojwach, Stephen Otieno. "Heterocycle carbonyl pyrazolyl palladium(II) complexes :synthesis, ethylene oligomerisation and polymerisation catalysis." Thesis, University of the Western Cape, 2004. http://etd.uwc.ac.za/index.php?module=etd&amp.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

Lavergne, Kaitlyn. "Synthesis of Azomethine Imines via Alkene Aminocarbonylation and their Derivatization into Pyrazolones." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32516.

Full text
Abstract:
Nitrogen-containing heterocyclic compounds are very important to the pharmaceutical and agrochemical industries, among others. Over the past few years, the Beauchemin group has been exploring reactivity of N-substituted isocyanates and as part of this has developed a metal-free alkene aminocarbonylation process relying on imino-isocyanates to form azomethine imines. The azomethine imines formed are interesting since they contain a cyclic β-aminocarbonyl motif. Catalysis of this reaction using basic additives allowed milder reaction conditions with electron-rich C=C bonds such as enol ethers. E
APA, Harvard, Vancouver, ISO, and other styles
36

Heider, Silvio. "Synthese neuer tri- und hexadentater Stickstoffbasen für Eisen(II) Spin Crossover Komplexe." Doctoral thesis, Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-120783.

Full text
Abstract:
Die vorliegende Arbeit thematisiert Eisen(II)-Komplexe mit Spinübergangseigenschaften. Dafür wurden neue hexadentate Liganden auf Basis von N,N'-Bis(2,2'-bipyridin-6-ylmethyl)-2,2'-biphenylendiamin entwickelt. Die in Kapitel 3.1 vorgestellten Systeme variieren dabei in den jeweiligen Substituenten der 6,6‘-Positionen der Biphenyleinheit. Es wird der Einfluss dieser Gruppen auf die magnetischen Eigenschaften der resultierenden Komplexe gezeigt. Im darauffolgenden Kapitel 3.2 wird ein variiertes Ligandensystem vorgestellt, in welchem anstelle einfacher Substituenten Donorfunktionen eingeführt wu
APA, Harvard, Vancouver, ISO, and other styles
37

Salazar, Garza Gustavo Adolfo. "Microwave-Assisted Synthesis, Characterization, and Photophysical Properties of New Rhenium(I) Pyrazolyl-Triazine Complexes." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc28473/.

Full text
Abstract:
The reaction of the chelating ligand 4-[4,6-bis(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazin-2-yl]-N,N-diethyl-benzenamine, L, with pentacarbonylchlororhenium by conventional heating method produces the complexes fac-[ReL(CO)3Cl2] and fac-[Re2L(CO)6Cl2] in a period of 48 hours. The use of microwaves as the source of heat and the increase in the equivalents of one of the reactants leads to a more selective reaction and also decreases the reaction time to 1 hour. After proper purification, the photophysical properties of fac-[ReL(CO)3Cl] were analyzed. The solid-state photoluminescence analysis s
APA, Harvard, Vancouver, ISO, and other styles
38

Chandanshive, Jay Zumbar <1983&gt. "Regiocontrolled Synthesis of Pyrazole Derivatives Through 1,3-Dipolar Cycloaddition Reaction And Synthesis of Helicene-Thiourea based and Polymer Supported Soos's Catalyst for Asymmetric Synthesis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5826/1/Chandanshive_JAY_ZUMBAR_Thesis.pdf.

Full text
Abstract:
In first part we have developed a simple regiocontrolled protocol of 1,3-DC to get ring fused pyrazole derivatives. These pyrazole derivatives were synthesized using 1,3-DC between nitrile imine and various dipolarophiles such as alkynes, cyclic α,β-ketones, lactones, thiocatones and lactums. The reactions were found to be highly regiospecific. In second part we have discussed about helicene, its properties, synthesis and applications as asymmetric catalyst.Due to inherent chirality, herein we have made an attempt to synthesize the helicene-thiourea based catalyst for asymmetric catalysi
APA, Harvard, Vancouver, ISO, and other styles
39

Chandanshive, Jay Zumbar <1983&gt. "Regiocontrolled Synthesis of Pyrazole Derivatives Through 1,3-Dipolar Cycloaddition Reaction And Synthesis of Helicene-Thiourea based and Polymer Supported Soos's Catalyst for Asymmetric Synthesis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5826/.

Full text
Abstract:
In first part we have developed a simple regiocontrolled protocol of 1,3-DC to get ring fused pyrazole derivatives. These pyrazole derivatives were synthesized using 1,3-DC between nitrile imine and various dipolarophiles such as alkynes, cyclic α,β-ketones, lactones, thiocatones and lactums. The reactions were found to be highly regiospecific. In second part we have discussed about helicene, its properties, synthesis and applications as asymmetric catalyst.Due to inherent chirality, herein we have made an attempt to synthesize the helicene-thiourea based catalyst for asymmetric catalysi
APA, Harvard, Vancouver, ISO, and other styles
40

Davies, Emyr D. "Novel bis (pyrazol-3-yl) ligands : their synthesis and coordination chemistry." Thesis, Cardiff University, 2007. http://orca.cf.ac.uk/54683/.

Full text
Abstract:
This thesis describes studies into the development of new bis(pyrazol-3-yl) ligands including our studies into their coordination chemistry. Chapter 1 is a brief introduction to chelating ligands based on heterocycles and outlines specifically looks at poly(pyrazole-l-yl) ligands as well as the few bis(pyrazole-3-yl) ligands publishes to date. Chapter 2 looks at the traditional synthetic routes to bis(pyrazol-3-yl) ligands and describes how we have manipulated these techniques to synthesise some novel ligands of our own. Chapter 3 includes a study of the transition metal coordination chemistry
APA, Harvard, Vancouver, ISO, and other styles
41

Bhambri, Sameer. "Ruthenium arene poly(pyrazolyl)borates and methanes : synthesis, reactivity and molecular orbital calculations." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300010.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Panasenko, N. V., and М. K. Bratenko. "Synthesis of 3-(3-aryl-1-phenyl-1H-4-pyrazolil)-chromen-2-ones." Thesis, БДМУ, 2017. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/16864.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Evans, Wynne. "The synthesis and properties of selected transition metal-pyrazole complexes and their application towards homogeneous catalysis." Thesis, Open University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280668.

Full text
APA, Harvard, Vancouver, ISO, and other styles
44

Şahin, Engin Sözüer Topaloğlu Işıl. "Synthesis And Characterization Oxo-İmido [Tris (3,5-Dimethyl-Pyrazol) Borate] Molybdenum Complexes/." [s.l.]: [s.n.], 2004. http://library.iyte.edu.tr/tezler/master/kimya/T000444.rar.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Couchman, Samantha M. "Syntheses and structural studies of complexes of mixed donor pyridine/phenol and pyridine/pyrazole ligands." Thesis, University of Bristol, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299312.

Full text
APA, Harvard, Vancouver, ISO, and other styles
46

Psillakis, Eleftheria. "The synthesis and study of metal complexes of poly(pyrazolyl)borate and related ligands." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387968.

Full text
APA, Harvard, Vancouver, ISO, and other styles
47

Hama, Salih Mariwan Abdulla. "Synthesis of azetidines, γ-lactams, fused furan bispyrrolidines and 2-pyrazolines : towards medical application". Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6838/.

Full text
Abstract:
Azetidines are important class of heterocyclic organic compounds in drug discovery and natural product synthesis. Several natural products and pharmaceuticals are containing azetidine precursors such as, penaresidin and Azelnidipine. Iodine mediated cyclisation of homoallylamines were found to furnish iodoazetidines at 20 °C and further reaction with amine nucelophiles afforded aminoazetidines in high yields. The cyclisation of various homoallylamines which different substitution patterns using molecular iodine to furnish new classes of compounds with interesting biological applications were s
APA, Harvard, Vancouver, ISO, and other styles
48

WILLISON, STUART ALAN. "Synthesis and Investigation of Pyrazole-Containing Platinum Complexes for the Design of Macrocyclic Molecules and Potential Two-electron Reagents." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1202480145.

Full text
APA, Harvard, Vancouver, ISO, and other styles
49

Shen, Tzu-Hsuan, and 沈子玄. "Synthesis of a series of pyrazolines and pyrazoles from chalcone." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/k9xxyb.

Full text
Abstract:
碩士<br>淡江大學<br>化學學系碩士班<br>106<br>Flavonols are naturally occurring molecules. They are recognized as good antioxidants. Many Flavonols are used for reactive oxygen species scavengers, oxidase, inhibitors and anticancer drugs. Pyrazole are discovered in natural plants and considered as pain relieving and muscle relaxation. A number of pyrazole derivates are famous for their efficacy and these drugs display different mechanisms of actions. For example, Celecoxib demonstrates anti-inflammatory; Rimonabant is used to treat obesity; Sildenafil is used to treat erectile dysfunction and pulmonary arte
APA, Harvard, Vancouver, ISO, and other styles
50

Huang, Hon-Cha, and 黃浤珈. "Synthesis and Cytotoxic Activities of 4,5-Disubstituted isoxazoles and pyrazoles." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/30026283384892445645.

Full text
Abstract:
碩士<br>中國文化大學<br>應用化學研究所<br>98<br>Abstract Combretastatin A-4 (CA-4), a naturally occurring stilbene, was isolated from Combretum caffrum (African bush willow). CA-4 strongly inhibited the polymerization of tubulin by binding to the colchicine site and showed potent cytotoxicity against a variety of human cancer cell lines including multiple drug resistant cancer cell lines. CA-4 also showed strong anti-vascular activity. In the previously comparative studies of the combretastatins it appears that the cis orientation of the two aromatic rings plays an important role of cytotoxicity. Therefore,
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Synthesis of Pyrazoles' for other source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography