Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/153746
Title: DEVELOPMENT OF NOVEL METAL AND NON-METAL BASED "COOPERATIVE LEWIS PAIRS" FOR BOND ACTIVATION AND CATALYSIS
Authors: CRAIG FRASER
Keywords: Hydrogenation, Catalysis, Lewis Acid, Lewis Base Carbocation, Iron
Issue Date: 24-Jan-2019
Citation: CRAIG FRASER (2019-01-24). DEVELOPMENT OF NOVEL METAL AND NON-METAL BASED "COOPERATIVE LEWIS PAIRS" FOR BOND ACTIVATION AND CATALYSIS. ScholarBank@NUS Repository.
Abstract: The functionalisation of E-X bonds (E = H, C, Si etc., X = H, halide etc.) is fundamental to synthetic chemistry. This dissertation discusses novel FLP systems for application in bond activation and catalysis. Combining trityl (Ph3C+) with a range of Lewis bases was investigated for the activation of hydrogen. Also discussed is the development of a novel carbocation capable of acting as both a stoichiometric oxidant and a Lewis acid catalyst. Low-valent iron and cobalt complexes capable of forming acidic hydrides were investigated as Lewis bases in FLPs for the hydrogenation of alkenes. While the iron complexes showed limited reactivity, the cobalt borane system was capable of hydrogen activation and reducing alkenes. The acidic metal hydrides were also applied in the hydrodeoxygenation of alcohols. Bimetallic cooperativity was also investigated using the iron complexes in combination with alkali metal cations. The activation of carbon-halogen bonds was studied and the stoichiometric homocoupling of benzylic halides was achieved.
URI: https://scholarbank.nus.edu.sg/handle/10635/153746
Appears in Collections:Ph.D Theses (Open)

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