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Dissertations / Theses on the topic 'Claisen'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

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1

Mullins, Toby. "Dearomatising Claisen rearrangements." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/43802.

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This thesis is divided into four chapters. Chapter one is a review of dearomatising [3,3]-sigmatropic rearrangements and is split by sub-classification of Claisen rearrangements. Chapter two introduces the decarboxylative Claisen rearrangement (dCr) and details investigations of the application of this reaction to compounds containing furan rings. Chapter three focuses on the natural product hinckdentine A. It begins with a brief review of previous studies towards the natural product, before discussing attempts to synthesise this compound by a decarboxylative Claisen rearrangement. Chapter fou
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2

Yoon, Tehshik Peter MacMillan David W. C. "The acyl-Claisen rearrangement development of a novel metal-catalyzed Claisen rearrangement and enantioselective variants of the acyl-Claisen rearrangement /." Diss., Pasadena, Calif. : California Institute of Technology, 2002. http://resolver.caltech.edu/CaltechTHESIS:01282010-153053761.

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Thesis (Ph. D.)--California Institute of Technology, 2002. PQ #3052855.<br>Advisor names found in the Acknowledgments pages of the thesis. Title from home page. Viewed 02/11/2010. Includes bibliographical references.
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3

Mountford, David Mark. "Novel Claisen rearrangement reactions." Thesis, Imperial College London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415168.

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4

Martin, Tracey. "Claisen rearragements in indoles." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38097.

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5

Yow, Shu Hui. "Claisen rearrangements of heterocycles." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9491.

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This thesis is divided into five chapters. Chapter 1 is a review of de-aromatisation processes achieved by sigmatropic rearrangement. It covers the two main types of sigmatropic rearrangements, namely [2,3]- and [3,3]-rearrangement. Chapter 2 introduces the decarboxylative Claisen rearrangement (dCr) reaction and the aim to investigate its viability on more elaborate heterocyclic substrates is discussed. Research efforts into the synthesis of 3-sulfonyl-6-alkenyl-1,4-dioxan-2-ones are detailed. Chapter 3 discusses the extension of this methodology towards N-alkylmorpholinones. The first sectio
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6

Yang, Yanbo. "Pd0-Catalyzed Formal 1,3-Diaza-Claisen Rearrangement. Design And Development Of Cationic 1,3-Diaza-Claisen Rearrangement." ScholarWorks @ UVM, 2014. http://scholarworks.uvm.edu/graddis/261.

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The dissertation describes Pd0-catalyzed formal 1,3-diaza-Claisen rearrangement and the design and development of cationic 1,3-diaza-Claisen rearrangement. Our previous work has shown that isocyanates react with azanorbornenes and azabicyclo[2.2.2]octenes under thermal conditions to afford zwitterionic intermediates that undergo a thermal 1,3-diaza-Claisen rearrangement to give both ureas and isoureas. However, some azanorbornenes and azabicyclooctenes failed to rearrange or proceeded in low yields. To address these challenging substrates for the thermal 1,3-diaza-Claisen rearrangement, we hav
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7

Fowler, Tom. "Claisen rearrangments of bicyclic enol ethers." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414088.

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8

McAdam, Catherine. "Claisen-Sakurai approaches to cyclopentane scaffolds." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.679210.

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A general approach to the synthesis of densely functionalised cyclopentenols was developed to circumvent selectivity and functionalization issues often encountered when attempting to access these synthetic intermediates using the methods currently in use. A range existing reactions were expanded upon, culminating in the formation of allyl silane starting materials for an intramolecular Sakurai reaction. The protocol was adapted to grant access to 'three of the four possible diastereoisomers of the cyclopentenol product. Conditions for a combined Claisen-Sakurai reaction were established. Treat
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9

O'Brien, Alexander. "Acyclic stereocontrol in the Claisen rearrangement." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/5560.

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This thesis examines the issues of acyclic stereocontrol in the Claisen rearrangement, with particular emphasis on the effects of exopericyclic stereocentres – i.e. those adjacent to the array of atoms directly involved in the sigmatropic process. It is divided into three main parts: The first section provides a review of the field of acyclic stereocontrol. The models used to explain the development of relationships between stereocenters in systems lacking well-defined conformational constraints are discussed. This is an established field and particular emphasis is given to recent developments
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10

Kamp, Marc Willem van der. "Modelling reactions and dynamics of Claisen enzymes." Thesis, University of Bristol, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492511.

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Claisen enzymes catalyse physiologically important carbon-carbon bond formations. Computer modelling, and in particular hybrid quantum mechanical / molecular mechanical (QM/MM) methods, can be used to obtain detailed insight into the functioning of enzymes. In this thesis, modelling is used to investigate the Claisen enzymes citrate synthase and ?-ketoacyl-ACP synthase II.
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11

Gore, Sophie. "Transannular Claisen rearrangements of α-sulfonyl lactones". Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/7827.

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This thesis is divided into three sections. Section one is a review of transannular pericyclic reactions. It covers the four main types of pericyclic reaction and major contributions in the field to date. Recent applications of these reactions to natural product synthesis are also included. Section two discusses the results of research efforts into transannular Claisen rearrangements of α-sulfonyl lactones. The background to the project is discussed along with initial investigations into the transannular Claisen and decarboxylative Claisen rearrangements (dCr) of the 7-membered ?-tosyl lactone
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12

Júnior, Paulo Eliandro da Silva. "Estratégias de heterociclização aplicadas a produtos naturais e sintéticos subexplorados pela química medicinal." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/60/60138/tde-04062014-112413/.

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O presente trabalho divide-se em três capítulos: Capítulo I - Nova síntese de ?-xiloidona: rearranjo de Claisen em hidroxinaftoquinonas; Capítulo II - Síntese e estudo de reatividade de promissores núcleos heteroaromáticos subexplorados pela química medicinal; Capítulo III - Análise computacional de similaridade e propriedades físico-químicas dos núcleos heterocíclicos do capítulo II. O capítulo I descreve uma nova rota para a síntese de ?-xiloidona, um produto natural relacionado ao lapachol, subexplorado pela química medicinal. Esta rota é baseada no rearranjo propargílico de Claisen, a part
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13

Voûte, Nicholas. "Rearrangements in the indolo[2,3-b]quinoline system : a novel approach to the synthesis of perophoramidine and the communesins /." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/486.

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14

Jürs, Stefan. "Die Claisen-Umlagerung : neue Anwendungen in der Kohlenhydratchemie /." Saarbrücken : VDM, Verl. Dr. Müller, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2987522&prov=M&dok_var=1&dok_ext=htm.

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15

Garcia-Torres, Jason. "Development of a dual Fries-Claisen rearrangement strategy." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/11002.

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Synthetic approaches towards linear fused carbon rings have been developed over the last decades due to their high interest as compounds with potential antibiotic activity and as organic electronics. The application of a novel iterative route towards linear fused carbon ring systems could provide a versatile new mode of access to complex substituted ring systems. Studies have previously demonstrated the use of an allylation-double Claisen-RCM sequence to build fused carbon rings (C). In this thesis we described our work to expand the use of this methodology by developing milder reaction condit
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16

Jürs, Stefan. "Die Claisen-Umlagerung neue Anwendungen in der Kohlenhydratchemie." Saarbrücken VDM Verlag Dr. Müller, 2006. http://d-nb.info/985065206/04.

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Zugl.: Hamburg, Univ., Diss., 2006 u.d.T.: Jürs, Stefan: Die Claisen-Umlagerung von Kohlenhydratderivaten als Methode zum Aufbau hoch funktionalisierter Carbocyclen und Saccharidanaloga<br>Hergestellt on demand
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17

Neal, Andrew. "Use of the Claisen rearrangement in natural product synthesis." Thesis, University of St Andrews, 2018. http://hdl.handle.net/10023/16129.

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18

Velarde, Laos Edmundo, and Ana Gonzalez. "Reacción de Claisen-Schmidt para la obtención de chalconas." Revista de Química, 2013. http://repositorio.pucp.edu.pe/index/handle/123456789/100777.

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19

Rodrigues, Tiago da Costa Alves da Fontoura. "Rearranjo de Claisen em adutos de Morita-Baylis-Hillman." reponame:Repositório Institucional da UnB, 2014. http://repositorio.unb.br/handle/10482/16668.

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Dissertação (mestrado)—Universidade de Brasília, Instituto de Química, Programa de Pós-Graduação em Química, 2014.<br>Submitted by Jaqueline Ferreira de Souza (jaquefs.braz@gmail.com) on 2014-10-24T14:32:40Z No. of bitstreams: 1 2014_TiagodaCostaAlvesdaFontouraRodrigues.pdf: 5982154 bytes, checksum: 2591cb155a1799aa137776d60300116d (MD5)<br>Approved for entry into archive by Tania Milca Carvalho Malheiros(tania@bce.unb.br) on 2014-10-30T14:09:08Z (GMT) No. of bitstreams: 1 2014_TiagodaCostaAlvesdaFontouraRodrigues.pdf: 5982154 bytes, checksum: 2591cb155a1799aa137776d60300116d (MD5)<br>Made
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20

Fuhry, Mary Ann Monica. "The Claisen rearrangement route to octalactins A and B." Thesis, University of Cambridge, 1995. https://www.repository.cam.ac.uk/handle/1810/271938.

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21

Barmettler, Peter. "Säurekatalysierte Amino-Claisen-Umlagerungen von 2, 6-Disubstituierten N-Propargylanilinen." [Fribourg, Switzerland] : Institut für Organische Chemie, Universität Freiburg (Schweiz), 1985. http://catalog.hathitrust.org/api/volumes/oclc/21856572.html.

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22

Oxford, Anona June. "Synthesis of unsymmetrically substituted benzenes." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238182.

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23

Betson, M. S. "A silicon controlled Ireland-Claisen rearrangement as a stereoelectronic probe." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596612.

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The work described in this thesis concerns the study of two general types of silicon-controlled Ireland-Claisen rearrangements, 152 and 155. We propose that the transition states for these two rearrangements are sterically very similar, but the flow of electron density is in opposite directions for the two cases. Any significant difference in the diastereoselectivities of the two rearrangements can therefore be ascribed to the difference in electronic nature of the transition states. Our studies showed that both classes of rearrangement gave the <i>anti</i> products with good to excellent sele
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24

Tellam, James Peter. "An Ireland-Claisen approach to beta-hydroxy alpha-amino acids." Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541238.

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25

Hutson, Leslie K. "Synthesis of Benzoxazoles Containing Allyl Crosslinking Sites via Claisen Rearrangements." Wright State University / OhioLINK, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=wright974400715.

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26

NOWACZYK, STEPHANIE. "Thio-rearrangement de claisen asymetrique controle par un groupe alkylsulfinyle." Caen, 2000. http://www.theses.fr/2000CAEN2042.

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Nous avons developpe une nouvelle version asymetrique du thio-rearrangement de claisen et nous avons prouve l'efficacite du groupement alkylsulfinyle en tant qu'auxiliaire de chiralite. Nous avons realise la synthese d'un dithioester et d'un thioamide -cyclohexylsulfinyles enantiopurs. Le diacetone-d-glucose, peu onereux et facilement accessible, a ete utilise comme source de chiralite. Les aminothioacetals de cetene, substrats du rearrangement, sont prepares par une reaction specifique des composes thiocarbonyles, la s-alkylation de l'enethiolate du thioamide enantiopur par des halogenures al
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27

Pham-Nguyên, Thị-Nhàn. "Thio-réarrangement de Claisen facilité, réversibilité, synthèse de composés thiocarbonyles /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376088909.

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28

Pham, Thi-Nhan Nguyen. "Thio-rearrangement de claisen : facilite, reversibilite, synthese de composes thiocarbonyles." Caen, 1987. http://www.theses.fr/1987CAEN2045.

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29

Palmer, Michelle Anne Jane 1961. "The biological Claisen condensation catalyzed by [beta]-ketothiolase from Zoogloea ramigera." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14206.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1989.<br>On t.p. "[beta]" is the Greek letter. Vita.<br>Includes bibliographical references (leaves 168-176).<br>by Michelle Anne Jane Palmer.<br>Ph.D.
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30

Mohamed, Mustafa Abdi. "Synthesis of [alpha]-allynyl and [alpha]-allylsilane amino acids by the Claisen rearrangement /." *McMaster only, 2001.

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31

Fischer, Daniel Friedrich. "New frontiers in asymmetric aza-Claisen rearrangements : development of ferrocenyl imidazoline palladacycles /." [S.l.] : [s.n.], 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18128.

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32

Laabs, Stephan. "Diastereoselektive Synthese von cis-3-Arylprolinderivaten durch auxiliarkontrollierte zwitterionische Aza-Claisen-Umlagerungen." [S.l. : s.n.], 2001. http://www.diss.fu-berlin.de/2001/116/index.html.

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33

Ryu, Youngha. "Studies toward biomimetic claisen condensation using nucleic acid templates and ribozyme catalysis." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/2204.

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Many different experimental approaches were attempted to achieve carbon-carbon bond formation by nucleic acid template-directed reactions and ribozyme catalysis as potential lipid synthesizing machineries in the RNA world. A novel biomimetic condition for decarboxylative Claisen condensation in polyketide biosynthesis was discovered. The reaction of a malonic acid half oxyester with a Nhydroxysuccinmidyl ester forming reagent resulted in self-condensation to provide the corresponding 1,3-acetonedicarboxylic acid diester in the absence of a divalent metal chelator or a coordinating solvent. The
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34

Marcotte, Joel. "Formal Synthesis of (+/-) Morphine via an Oxy-cope/Claisen/Ene Reaction Cascade." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23560.

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For years now, opium alkaloids and morphinans have been attractive synthetic targets for numerous organic chemists due to their important biological activity and interesting molecular architecture. Morphine is one of the most potent analgesic drugs used to alleviate severe pain. Our research group maintains a longstanding interest in tandem pericyclic reactions such as the oxy-Cope/Claisen/ene reaction cascade and their application to the total synthesis of complex natural products. Herein we report the ventures towards the formal synthesis of (+/-)-morphine based on the novel tandem oxy- Cope
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35

Mwene-Mbeja, Topwe Milongwe. "Étude du réarrangement de Claisen catalysé par les sels de bismuth(III)." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/25046/25046.pdf.

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36

Dimartino, Gianluca. "Ring expansion routes to cyclic fluoroketones by oxy-Cope and Claisen rearrangements." Thesis, University of Birmingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369156.

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37

Davis, Jeffery Thayer. "The biosynthetic Claisen condensation : mechanistic enzymology of biosynthetic thiolase from Zoogloea ramigera." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/14956.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1987.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.<br>Bibliography: leaves 225-230.<br>by Jeffery Thayer Davis.<br>Ph.D.
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38

Winter, Caroline. "Catalisadores heterogêneos para produção de chalconas: reação de condensação de Claisen-Schmidt." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/5692.

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Submitted by Marlene Santos (marlene.bc.ufg@gmail.com) on 2016-06-15T19:31:26Z No. of bitstreams: 2 Dissertação - Caroline Winter - 2016.pdf: 7433726 bytes, checksum: bf2a1b900a9af4a614fcafcacca772fa (MD5) license_rdf: 19874 bytes, checksum: 38cb62ef53e6f513db2fb7e337df6485 (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2016-06-28T12:15:36Z (GMT) No. of bitstreams: 2 Dissertação - Caroline Winter - 2016.pdf: 7433726 bytes, checksum: bf2a1b900a9af4a614fcafcacca772fa (MD5) license_rdf: 19874 bytes, checksum: 38cb62ef53e6f513db2fb7e337df6485 (MD5)<br>Made ava
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Ferreira, Valquíria Barbosa Nantes. "Estudo da influência das ligações de hidrogênio intramoleculares no rearranjo de claisen." Florianópolis, SC, 2008. http://repositorio.ufsc.br/xmlui/handle/123456789/91614.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Química.<br>Made available in DSpace on 2012-10-24T00:47:47Z (GMT). No. of bitstreams: 1 254609.pdf: 1547301 bytes, checksum: 81c75f6a244c68a6455a3f5617620193 (MD5)<br>O uso de pesticidas na agricultura aumenta o rendimento e a qualidade dos produtos, reduzindo o trabalho e os gastos com energia. Porém o uso intenso de diversos pesticidas, principalmente herbicidas, fungicidas e inseticidas, que são aplicados diretamente na lamina d'água, em plantação de arroz, por
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40

Wong, Kong-ching, and 王港政. "Studies on the copper hydride mediated reductive Claisenrearrangement." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50899661.

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41

Aduna, Enrique. "Modélisation cinétique et simulation de réactions de Claisen-Schmidt catalysées par des hydrotalcites." Lyon 1, 2003. http://www.theses.fr/2003LYO10171.

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Nous nous sommes intéressés à la modélisation et à la simulation des mécanismes réactionnels. Nous présentons des modèles cinétiques cohérents basés sur des mécanismes classiques de la chimique organique en phase homogène et sur l'approche de Langmuir Hinshelwood. Dans les modèles obtenus nous avons identifié les sites catalytiques proposés par Langmuir-Hinshelwood. Relativement à la réaction, il n'y a plus de sites libres. En revanche ceux-ci peuvent subsister en terme de physisorption préalable à l'activation/réaction. Nous serons intéresses à la réaction de aldolisation entre un aldéhyde ar
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42

Beaulieu, Patrick. "Approach to the synthesis of spiroiridal-type triterpenoids via an Ireland-Claisen rearrangement." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26576.

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The formation of carbon-carbon bonds in an asymmetric manner is a central goal of modern synthetic chemistry. Many methods have been developed to form a variety of linkages and substitutions, however the asymmetric formation of quaternary carbons of spirocycles is still a formidable challenge. These compounds represent special challenges because of the requirement of double ring formation together with the control of facial selectivity during the formation of a quaternary carbon centre. The present work demonstrates our efforts towards establishing a strategy based on the Ireland-Claisen rearr
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43

Jamieson, Andrew G. "Investigation of a new substrate directed aza-Claisen rearrangement for natural product synthesis." Thesis, University of Glasgow, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443415.

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44

Fernandes, Sergio Antonio. "Aplicação da RMN de 1H para prever regiosseletividade do rearranjo de Claisen aromatico." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248652.

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Orientador : Anita Jocelyne Marsaioli<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-02T09:33:09Z (GMT). No. of bitstreams: 1 Fernandes_SergioAntonio_M.pdf: 3614422 bytes, checksum: a6ee0364a0bf0915e0a7bd0f9c905fd2 (MD5) Previous issue date: 2001<br>Mestrado
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Probst, Nicolas. "Séquence Réarrangement d’Ireland – Claisen/Métathèse. Application à la synthèse de molécules d’intérêt biologique." Reims, 2009. http://theses.univ-reims.fr/exl-doc/GED00001117.pdf.

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Le réarrangement d’Ireland-Claisen suivi d’une métathèse (ICM) est une méthode permettant la synthèse de carbocyles possédant un centre quaternaire hydroxylé ou amido. Cette méthodologie a été appliquée à quatre diastéréoisomères afin de former les cyclopentènes chiraux correspondants. Les configurations ont été facilement confirmées par l’utilisation d’auxiliaires chiraux. Cette méthodologie a ensuite été utilisée pour la synthèse totale du diCQA, un puissant inhibiteur de l’intégrase du VIH-1, et une molécule présente dans de nombreuses sources végétales. Les précurseurs chiraux ont été obte
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46

Perrio, Stéphane. "Diastereoselectivite du thio-rearrangement de claisen : induction asymetrique par un centre chiral oxygene." Caen, 1991. http://www.theses.fr/1991CAEN2046.

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Le thio-rearrangement de claisen de trois familles d'alpha hydroxydithioacetals de cetene s-allyles a ete etudie. Il conduit a des beta hydroxy-dithioesters alpha allyles a deux ou trois carbones asymetriques contigus. A chaque fois une excellente diastereoselectivite a ete observee: 1) a partir de dithioacetals comportant un carbone prochiral et un carbone asymetrique, on obtient majoritairement au moins a 85% des dithioesters de stereochimie syn; 2) avec des dithioacetals presentant un seul carbone prochiral et deux carbones asymetriques contigus et configuration relative syn, on botient ave
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47

Motta, Luiz Frederico 1971. "Planejamento racional no desenvolvimento de novos derivados de Chalcona como agentes anti-Candida albicans." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249579.

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Orientador: Wanda Pereira Almeida<br>Tese (doutorado) - Universiade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-20T10:19:37Z (GMT). No. of bitstreams: 1 Motta_LuizFrederico_D.pdf: 7487995 bytes, checksum: 147ff46d24e06394d18af036b2472d1e (MD5) Previous issue date: 2012<br>Resumo: O objetivo do presente trabalho foi identificar os principais descritores dos derivados análogos de chalcona com intuito de correlacionar com a atividade anti-Candida albicans. A incidência de infecções sistêmicas por C. albicans vem crescendo bastante nos últimos anos, particul
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48

Walker, Joel. "Generation Of Electron Deficient Carbodiimides And Their Application In The Guanidine Forming, Zwitterionic 1,3-Diaza-Claisen Rearrangement." ScholarWorks @ UVM, 2017. http://scholarworks.uvm.edu/graddis/674.

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The 1,3-diaza Claisen rearrangement was initially discovered by the Madalengoitia group in the early 2000s. Tertiary, allylic, amines nucleophilically add to the carbon of a heterocumulene (isocyanate, isothiocyanate, or carbodiimide) to generate a zwitterion which then undergoes [3,3]-sigmatropic rearrangement. The rearrangements conducted with a carbodiimide generate guanidine-containing skeletons. The guanidine functional group is found in many biologically active products, making it a worthwhile chemical target. To this end, strained, tertiary, allylic, amine 2-benzyl-2-azabicyclo[2.2.1]he
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49

Erhard, Thomas. "Totalsynthese von (±)-Codein durch 1,3-dipolare Cycloaddition." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-69013.

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Die Nitron-Cycloaddition an ein dearomatisiertes Phenol ermöglichte den leichten Aufbau des Phenanthrengerüstes von Codein in der gewünschten Konfiguration. Weitere Schritte führten mit kompletter Diastereoselektivität zu Allopseudocodein und nach Allylverschiebung durch Hydrolyse der Chlorcodide schließlich zu (±)-Codein.
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50

Jürs, Stefan. "Die Claisen-Umlagerung von Kohlenhydratderivaten als Methode zum Aufbau hoch funktionalisierter Carbocyclen und Saccharidanaloga." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=979754038.

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