Search for dissertations about: "Lewis acid catalyst"
Showing result 1 - 5 of 12 swedish dissertations containing the words Lewis acid catalyst.
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1. Aspects on the Regio and Stereo Selectivity in the Hydrolsilylation of 1,3-Dienes
Abstract : This thesis is a summary of four papers concerning various aspects on the transition metal catalysed hydrosilylation of 1,3-dienes. The hydrosilylation reaction is formally an addition of a hydrosilane to an unsaturated system and depending on the reaction conditions, control of stereo-, regio-, and chemo-selectivity can be achieved. READ MORE
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2. Efficient Synthesis and Analysis of Chiral Cyanohydrins
Abstract : This thesis deals with the development of new methods for efficient synthesis and analysis in asymmetric catalysis. It focuses on the preparation of chiral cyanohydrins by enantioselective addition of cyanide to prochiral aldehydes. READ MORE
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3. Impact of Secondary Interactions in Asymmetric Catalysis
Abstract : This thesis deals with secondary interactions in asymmetric catalysis and their impact on the outcome of catalytic reactions. The first part revolves around the metal-catalyzed asymmetric allylic alkylation reaction and how interactions within the catalyst affect the stereochemistry. READ MORE
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4. Direct Catalytic Nucleophilic Substitution of Non-Derivatized Alcohols
Abstract : This thesis focuses on the development of methods for the activation of the hydroxyl group in non-derivatized alcohols in substitution reactions. The thesis is divided into two parts, describing three different catalytic systems. READ MORE
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5. Carbocation Catalysis for Organic Synthesis
Abstract : The most common view of carbocations in organic chemistry is that they are short-lived intermediates in several fundamental reactions, e.g. the classic SN1-reaction. READ MORE