Log in

Relevant bibliographies by topics / Chiral oxazolines / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Chiral oxazolines.

Dissertations / Theses on the topic 'Chiral oxazolines'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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

Select a source type:

Consult the top 28 dissertations / theses for your research on the topic 'Chiral oxazolines.'

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

Shuttleworth, Stephen Joseph. "Approaches to the asymmetric synthesis of substituted carbocycles using the 1,3-dithiane 1-oxide (DiTOX) building block." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241457.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Rasappan, Ramesh. "Synthesis and exploration of chiral aza-bis(oxazolines) and organocatalysts in asymmetric reactions." kostenfrei, 2009. http://epub.uni-regensburg.de/13388/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hoy, Kevin. "Chiral oxazolines in asymmetric synthesis and studies on the development of organosilicon reagents." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27321.

Full text

Abstract:

This thesis is divided into two chapters. Chapter I describes the synthesis of several novel chiral oxazolines and investigations of their utility in asymmetric synthesis. Oxazoline 58, prepared from L-PhenyIaIanine, and oxazolines 75, 76, 77 and 83 prepared from L-tyrosine, were subjected to a deprotonation-aIkyIation sequence. The diastereomeric excess of the alkylated oxazoline possessing the S-configuration at the α-chiral carbon was only modest (20-23%) as determined by ¹H nmr spectroscopy. The expected increase in diastereoselectivity, due to steric and chelation effects, with the modifi

APA, Harvard, Vancouver, ISO, and other styles

4

Yalcouye, Boubacar. "Synthèse atropo-sélective de la partie biarylique de la (-)-stéganacine via le couplage croisé de Suzuki-Miyaura et le couplage ARYNE." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF059.

Full text

Abstract:

Les propriétés biologiques intéressantes des biaryles à chiralité axiale ainsi que le défi lié à la construction de la liaison Csp2-Csp2 du motif biarylique ont suscité un vif intérêt des chimistes organiciens de synthèse. Les biaryles à chiralité axiale sont des structures privilégiées en chimie médicinale ainsi qu’en catalyse asymétrique. L’objectif de notre recherche était le contrôle de la chiralité axiale de la (-)-stéganacine en utilisant deux approches atropo-sélectives distinctes: couplage croisé de Suzuki-Miyaura (en présence de métaux de transition), couplage ARYNE (sans métaux de tr

APA, Harvard, Vancouver, ISO, and other styles

5

Shintani, Ryo 1976. "Applications of planar-chiral phosphaferrocene-oxazolines in asymmetric catalysis and enantioselective desymmetrization by carbon nucleophiles in the presence of chiral ligands." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/30019.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2003.<br>Includes bibliographical references.<br>In PART I, the design and the synthesis of planar-chiral phosphaferrocene-oxazolines, a new class of P,N-ligands, are described. The modular nature of their structure allows easy access to a number of analogues in enantiomerically pure forms, facilitating the easy tunability of the chiral environment. These ligands are then applied to several transition metal-catalyzed asymmetric reactions. In Pd-catalyzed asymmetric allylic alkylations, it is established that the planar

APA, Harvard, Vancouver, ISO, and other styles

6

Hallman, Kristina. "Asymmetric Catalysis : Ligand Design and Conformational Studies." Doctoral thesis, KTH, Chemistry, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3275.

Full text

Abstract:

<p>This thesis deals with the design of ligands for efficientasymmetric catalysis and studies of the conformation of theligands in the catalytically active complexes. All ligandsdeveloped contain chiral oxazoline heterocycles.</p><p>The conformations of hydroxy- and methoxy-substitutedpyridinooxazolines and bis(oxazolines) during Pd-catalysedallylic alkylations were investigated using crystallography,2D-NMR techniques and DFT calculations. A stabilising OH-Pdinteraction was discovered which might explain the differencein reactivity between the hydroxy- and methoxy-containingligands. The confor

APA, Harvard, Vancouver, ISO, and other styles

7

Lévêque, Hubert. "Synthèse d'oxazolines fonctionnelles chirales : accès aux phases stationnaires polymériques et greffage sur silice pour l'application à la chromatographie énantiosélective." Rouen, 1994. http://www.theses.fr/1994ROUES058.

Full text

Abstract:

La synthèse de dérivés de l'oxazoline de Meyers à partir du (1S, 2S)-2-amino-1-phénylpropan-1,3-diol, a permis de préparer des phases stationnaires chirales pour évaluer le potentiel de ces hétérocycles en chromatographie énantiosélective. L'accès à des systèmes séparatifs, dont les performances ont été jugées satisfaisantes (séparation de dérivés d'aminoacides et d'amines aromatiques), a été effectué par introduction du motif chiral dans une chaîne polysiloxane ou par greffage sur silice. La mise au point de voies d'accès-sélectives à des oxazolines fonctionnelles chiales, isomères des précéd

APA, Harvard, Vancouver, ISO, and other styles

8

Schall, Caroline Anja. "Chiral oxazoline and bis(oxazoline) ligands : new biomimetic models for iron containing nonheme proteins and their application in catalysis." kostenfrei, 2007. http://www.opus-bayern.de/uni-regensburg/volltexte/2008/891/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Hoffmann, Marie. "Catalyse à l'or (I/III) : de la réactivité au catalyseur, en passant par l'analyse structurale." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAF020/document.

Full text

Abstract:

La catalyse organométallique est l’un des outils les plus puissants de la synthèse chimique, car elle permet de réaliser des transformations sélectives et spécifiques selon le catalyseur employé. Dans ce contexte, les sels et complexes d’or ont émergé il y a une quinzaine d’années et se sont révélés très utiles et attractifs pour la synthèse organique, faisant preuve de propriétés particulières de type acide de Lewis à la fois π (alcyno- alcènophilie) et σ (oxo- azaphile). L’objectif initial de cette thèse a été d'approfondir l’étude de la réactivité de l’or au travers la mise au point de nouv

APA, Harvard, Vancouver, ISO, and other styles

10

Trifonova, Anna. "Synthesis of Novel Chiral Bicyclic Ligands and their Application in Iridium-Catalyzed Reactions." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5783.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

黎達成 and Tat-shing Lai. "Oxo and Imido transfer reactions mediated by ruthenium and manganese complexes containing chiral porphyrin and oxazolinyl ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31237186.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Lai, Tat-shing. "Oxo and Imido transfer reactions mediated by ruthenium and manganese complexes containing chiral porphyrin and oxazolinyl ligands /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19738006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Rahm, Fredrik. "Chiral Pyridine-Containing Ligands for Asymmetric Catalysis. Synthesis and Applications." Doctoral thesis, KTH, Chemistry, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3564.

Full text

Abstract:

<p>This thesis deals with the design and syntheses of chiral,enantiopure pyridinecontaining ligands and their applicationsin asymmetric catalyis.</p><p>Chiral pyridyl pyrrolidine ligands and pyridyl oxazolineligands were synthesized and employed in thepalladium-catalysed allylic alkylation of 1,3-diphenyl-2-propenyl acetate with dimethyl malonate. Theinfluence of the steric properties of the ligands wereinvestigated.</p><p>Ditopic ligands, containing crown ether units as structuralelements, were synthesized and some of the ligands were used asligands in the palladiumcatalysed allylic alkylatio

APA, Harvard, Vancouver, ISO, and other styles

14

Nimmagadda, Sri Krishna. "Asymmetric Transformations Catalyzed By Chiral BINOL Alkaline Earth Metal Phosphate Complexes." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6554.

Full text

Abstract:

Small molecule hydrogen bond donors have emerged as versatile catalysts in asymmetric synthesis. Within this class, chiral BINOL phosphoric acid is regarded as one of the pioneer catalysts used in several asymmetric transformations. The ability of the catalyst to activate the substrates could be controlled in two different ways. (1) Dual activation/bifunctional activation of substrate by hydrogen bond interactions or ion pairing with phosphoric acid or (2) By forming chiral BINOL phosphate metal complex that could significantly alter the interactions in chiral space. In particular, chiral alka

APA, Harvard, Vancouver, ISO, and other styles

15

Amara, Zacharias. "Conception et synthèse d'analogues pyrrolidiniques d'alcaloïdes de Lobelia comme ligands potentiels des récepteurs nicotiniques centraux à l'acétylcholine." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-01055314.

Full text

Abstract:

Au cours de ce travail, nous nous sommes intéressés à développer des voies de synthèse convergentes et diastéréosélectives en vue de préparer des analogues pyrrolidiniques des alcaloïdes de Lobelia comme nouveaux ligands des récepteurs nicotiniques centraux à l'acétylcholine. Ainsi, nous avons mis au point une méthode " bidirectionnelle " basée sur des réactions de double aza-Michael et donnant accès à des pyrrolidines 2,5-disubstituées. Une étude de réactivité a également été mené afin d'améliorer la chimiosélectivité des différents processus réactionnels impliquant des réactions d'aza-Michae

APA, Harvard, Vancouver, ISO, and other styles

16

Kong, Fanji. "Synthesis and Application of New Chiral Ligands for Enantioselectivity Tuning in Transition Metal Catalysis." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1011774/.

Full text

Abstract:

A set of five new C3-symmetric phosphites were synthesized and tested in palladium-catalyzed asymmetric Suzuki coupling. The observed reactivity and selectivity were dependent upon several factors. One of the phosphites was able to achieve some of the highest levels of enantioselectivity in asymmetric Suzuki couplings with specific substrates. Different hypotheses have been made for understanding the ligand effects and reaction selectivities, and those hypotheses were tested via various methods including DOSY NMR experiments, X-ray crystallography, and correlation of catalyst selectivity with

APA, Harvard, Vancouver, ISO, and other styles

17

Guerpin, Valérie. "Synthèse et étude de phases stationnaires dérivées d'oxazolines chirales pour la chromatographie énantiosélective en phase gazeuse et en phase liquide haute performance." Rouen, 1996. http://www.theses.fr/1996ROUES016.

Full text

Abstract:

Après une revue bibliographique des phases stationnaires chirales (PSC) en chromatographie en phase gazeuse (CPG) et en phase liquide haute performance (CLHP), la synthèse et l'étude de nouvelles PSC dérivées de molécules d'oxazolines sont présentées parallèlement dans ces deux techniques chromatographiques. La synthèse de polyhydrogénométhylsiloxanes (PHMS) de rapports d'unités siloxanes différents et le greffage d'oxazolines insaturées par réaction d'hydrosilylation ont permis d'accéder à différents polysiloxanes chiraux. La caractérisation des PHMS et des polysiloxanes chiraux est réalisée

APA, Harvard, Vancouver, ISO, and other styles

18

Nomura, Hiroshi. "An Investigation into the Allylic Imidate Rearrangement of Trichloroacetimidates Catalysed by Cobalt Oxazoline Palladacycles. The Use of Chiral Allylic Amides for the synthesis of Mono- and Bicyclic Nitrogen Heterocycles." Thesis, University of East Anglia, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520457.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Binay, Patrice. "Nouveaux modèles du NADH : réactivité et énantiosélectivité." Rouen, 1986. http://www.theses.fr/1986ROUES001.

Full text

Abstract:

Dans une première partie, synthèse d'alkyl-4 dihydro-1,4 benzyl-1 et -phényl-1p éthyl-1 (diméthyl-4,4 oxazoline-2yl-2)-3 pyridines et étude de leur activité réductrice vis-a-vis de p-nitrobenzaldéhyde et de benzenéglyoxylate de méthyle en présence de mg**(2+) ; dans la seconde partie, étude de modèles plus énantiosélectifs : méthyl-1 dihydro-1,4 n-(hydroxyméthyl-1 propyl) nicotinamide (=méthyl-1 a), o-, m- et p- xylylene-1, 1' bis-a, dihydro-1,4 methyl-1 nicotinate de (dihydro-1,4 methyl-1 nicotinoylamino)-2 butyle et le cyclophane correspondant à ce dernier composé (pont xylylene entre les az

APA, Harvard, Vancouver, ISO, and other styles

20

Lin, Yen-chun, and 林彥均. "Synthesis of New Chiral Oxazolines and Application in Asymmetric Synthesis." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/20790026622185833127.

Full text

Abstract:

碩士<br>國立中山大學<br>化學系研究所<br>98<br>Recently, chiral auxiliary reagents have received great attention in asymmetric organic chemistry. One of the most well-known ligands, oxazoline, has been widely investigated in literatures because of its chelating abilities with metals. In catalytic reactions, oxazoline (bearing bulky substituants) metal complexes can result in excellent enantioselectivity. Therefore, we designed two novel bis-oxazoline ligands,1,4 - ((4 - phenyl-4,5 - dihydrotestosterone oxazole -2 - yl) methyl) benzene (89) and 2,2 ''- (4,4'', 5,5 '', 6,6'&a

APA, Harvard, Vancouver, ISO, and other styles

21

Rasappan, Ramesh [Verfasser]. "Synthesis and exploration of chiral aza-bis(oxazolines) and organocatalysts in asymmetric reactions / vorgelegt von Ramesh Rasappan." 2009. http://d-nb.info/100266327X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Le, Cong-Dung Thi Pagenkopf Brian L. "New chiral bis(oxazoline) ligands for asymmetric catalysis." 2005. http://repositories.lib.utexas.edu/bitstream/handle/2152/1972/lec22584.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Le, Cong-Dung Thi. "New chiral bis(oxazoline) ligands for asymmetric catalysis." Thesis, 2005. http://hdl.handle.net/2152/1972.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Wei, Yi-Ting, and 魏翊庭. "Asymmetric Henry Reaction Catalyzed by Copper Complexes of Pyrazole-containing Chiral Oxazoline Bidentate Ligands." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/92384492421436418861.

Full text

Abstract:

碩士<br>國立中山大學<br>化學系研究所<br>101<br>A series of new pyrazole-containing chiral oxazoline bidentate ligands have been designed, successfully synthesized, and applied to Asymmetric Henry Reaction. Pyrazole-containing chiral oxazoline bidentate ligand has been investigated in catalytic asymmetric Henry reaction of nitroaldol compound with different Lewis acids.The Cu(OTf)2 complex furnished R enantiomer (yield 97%, 37% ee), and Cu(OAc)2 complex afforded S enantiomer (yield 82%, 17% ee).

APA, Harvard, Vancouver, ISO, and other styles

25

Schall, Caroline Anja [Verfasser]. "Chiral oxazoline and bis(oxazoline) ligands : new biomimetic models for iron containing nonheme proteins and their application in catalysis / vorgelegt von Caroline Anja Schall." 2008. http://d-nb.info/99182427X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Seitz, Michael [Verfasser]. "Asymmetric synthesis of chiral at metal complexes with pentadentate bis(oxazoline) ligands / vorgelegt von Michael Seitz." 2005. http://d-nb.info/975556231/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Kondo, Rei, and 玲. 近藤. "Development of Catalytic Methods for the Synthesis of Oxa- and Thiazolines and Asymmetric Diels-Alder Catalysis Using Chiral Bis(oxazoline) Ligands." Thesis, 2009. http://hdl.handle.net/2237/11903.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

"Development of Catalytic Methods for the Synthesis of Oxa- and Thiazolines and Asymmetric Diels-Alder Catalysis Using Chiral Bis(oxazoline) Ligands." Thesis, 2009. http://hdl.handle.net/2237/11903.

Full text

APA, Harvard, Vancouver, ISO, and other styles

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!