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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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N-heterocyclic carbenes and their application as ligands for transition metal mediated synthesisCarroll, Robert James January 2006 (has links)
The present thesis describes a range of studies on the generation and application of N-heterocyclic carbene species capable of acting as ligands to a variety of transition metals. These novel complexes are then applied to a variety of common organic transformations. This thesis opens with two distinct introductory reviews. The first focuses on recent developments on the generation and application of N-heterocyclic carbenes as ligands. The second is concerned with the specific area of hydrogen transfer reactions. The results and discussion section firstly describes the successful generation of free 'pincer' type carbene moieties, their complexation with ruthenium and the application of these new catalysts to oxidation/reduction reactions. This new organometallic complexes are found to undergo hydrogen transfer reactions with a range of substrates (alcohol/carbonyl based) under a variety of conditions to yield the corresponding product (alcohol/carbonyl based). Subsequent studies are directed towards novel syntheses of the parent carbene precursor, the free carbene or the carbene-transition metal complex are then discussed. Preparation of a 'second generation' acac based ligands will be presented in the penultimate results and discussion section of the thesis. From this study, an array of functionalised carbene precursors is prepared, each possessing a masked carbene in a 1,5 relationship to a chelating oxo-substituent. Finally, this thesis discusses the attempted in-situ preparation of several transition metal complexes and their application a range of organic transformations. The thesis terminates with a full description of the experimental procedures used and the compounds prepared.
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Cyanide complexes as redox-active ligandsOnganusorn, Sriwipha January 2006 (has links)
No description available.
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Selective oxidation of organosulfur substrates by hydrogen peroxideMurray, Jane January 2005 (has links)
No description available.
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Novel tandem oxidation processes and their application towards the total synthesis of UpenamideReid, Mark January 2005 (has links)
No description available.
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Surface chemistry of oxygenates over model platinum catalystsHart, Nicholas January 2005 (has links)
No description available.
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Autoxidation reactions of chlorophyllWalker, John Stuart January 2004 (has links)
No description available.
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Oxidation of azo dyes with hydrogen peroxide catalysed by manganese 1,4,7-trimethyl-1,4,7-triazacyclononane complexesPons Prats, Roger January 2004 (has links)
No description available.
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Hydrosilylative reduction of aldehydes and other groups by halosilanes using nucleophiles and ionic liquids as promotersBarclay, Isabelle January 2003 (has links)
No description available.
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The first total synthesis of mycaperoxide B : a biomimetic approachPye, Richard Joseph January 2002 (has links)
No description available.
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Automated reactions in supercritical carbon dioxideWalsh, Ben January 2004 (has links)
No description available.
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