Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487767
Title: Transition metal-catalysed oxidative additions to alkenes
Author: Warrington, Adam David
ISNI:       0000 0001 3563 6680
Awarding Body: Loughborough University
Current Institution: Loughborough University
Date of Award: 2007
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Abstract:
This thesis describes the development of new methods towards the stereoselective synthesis of oxazolidinones and [3,3] sigmatropic rearrangements to allylamines from allylic carbamate starting materials. Unlike previous protocols found in the literature the oxazolidinones formed do not have a protected nitrogen atom. The stereoselective formation of chlorohydroxylated products is demonstrated with the view to utilise this reaction as part of an alternative to the tethered aminohydroxylation. A novel diastereoselective iodine mediated cyclisation of allylic carbamates and allylic ureas to oxazolidinones and imidazolidinones respectively is described. The reaction has also been telescoped from an aldehyde completing three reactions in a one pot environment. The use of palladium (II) catalysis for oxazolidinone formation is also shown in an attempt to devise an enantioselective reaction analogous to the highly acclaimed tethered aminohydroxylation. Palladium (II) catalysis is also utilised for the diastereoselective conversion of allylic carbamates to allylic amines. Chapter 1: An overview to the uses of osmium and palladium in the activation of alkenes described in the literature. Chapter 2: Highlights our research into the formation of oxazolidinone rings from and [3,3] sigmatropic rearrangements of allylic carbamates. Chapter 3: Provides experimental data for our studies.
Supervisor: Not available Sponsor: EPSRC ; GlaxoSmithKline plc
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.487767  DOI: Not available
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