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Skip to Search Results- 1Beckers, Nicole
- 1Brown, Houston J. S.
- 1Brown, Orain, A
- 1Bunquin, Jeffrey
- 1Corkum, Elizabeth G
- 1Endean, Riley Thomas
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A New Approach to Molecular Hydrodesulfurization Catalysts: Allyl-capped Trialkylphosphoranimide-bridged Late First-row Transition Metal Clusters
DownloadFall 2017
A series of new trialkylphosphoranimide allyl-capped clusters [M(ƞ3-allyl)(NPR)3]2, (M = Fe, Co or Ni, R = Et, tBu or Ph) were synthesized. The nickel dimers [Ni(ƞ3-allyl)(NPR3)]2, R = Et, Ph are diamagnetic and have been fully characterized using NMR spectroscopy, X-ray crystallography,...
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Spring 2021
A thorough overview of esters and their reductions is presented. A large focus was placed on reductions via homogeneous catalytic hydrogenation. Although several ester hydrogenation systems have been developed, the production of highly enantioenriched alcohols has generally relied upon the usage...
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Design, Development and Mechanistic Study of Ruthenium-Based Catalysts for the Hydrogenation of Imides and Amides
DownloadSpring 2014
Prior mechanistic studies demonstrate that trans-[RuH2((R)-BINAP)((R,R)-dpen)] is a remarkably active carbonyl reducing agent at low-temperatures in THF-d8. This dissertation describes the monohydrogenation of cyclic meso-imides using this catalyst and related complexes under mild conditions....
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Development of Ir- and Rh-Catalyzed Deoxygenation and Carbene Cross Coupling Reactions of Allylic Carbonates
DownloadFall 2016
Transition metal-catalyzed allylic substitution reactions are widely used for the selective formation of new bonds. This class of reaction has been extensively studied with a variety of nucleophiles and under optimized conditions that will furnish product in high yield and with high chemo-,...
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Spring 2011
The Noyori-type catalyst trans-Ru((R)-BINAP)(H)2((R,R)-dpen) (6) and its analogues are among the most active and enantioselective ketone hydrogenation systems reported to date. Its applications towards other types of carbonyl compounds are, however, understudied. This dissertation describes the...
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Empowering the Base Metals: Rational Design of Homogeneous Catalysts for Hydrotreatment, and Reduction of Organic Unsaturates
DownloadFall 2013
Hydrocarbon-soluble, low-coordinate, phosphoranimide-supported complexes of the base metals (iron, cobalt and nickel) were developed and evaluated for a range of stoichiometric and catalytic bond-forming and bond-breaking transformations. An unprecedented family of tetrametallic clusters of Co(I)...
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Spring 2018
A series of phosphoranimide-supported first-row transition metal clusters were prepared, structurally characterized, and investigated for catalytic hydrogenolysis of carbon-heteroatom bonds. Homoleptic heterocubane clusters, as well as two-dimensional bi- and tetranuclear compounds of manganese,...
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Mixed-Valence First-Row Metal Clusters for Catalytic Hydrodesulfurization and Hydrodeoxygenation
DownloadFall 2013
Salt metathesis between CoCl2 and [KNPEt3]n provides a new route to the halide-substituted cobalt phosphoranimide cluster [CoCl(NPEt3)]4. This cluster is a useful precursor for the preparation of alkyl-capped cobalt phosphoranimide complexes. The methylated heterocubane [CoMe(NPEt3)]4 was...
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Spring 2017
Fortuitous characterization of the cationic nickel cluster [Ni4(NPtBu3)4][Li3Br4(Et2O)3] led to the rational syntheses and characterization of the mixed-valence low-coordinate cationic nickel cluster: [Ni4(NPtBu3)4]BPh4 and [Ni4(NPtBu3)4]PF6, and subsequently the preparation of the anionic...
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Synthesis and screening of heterogeneous multimetallic nanoparticle catalysts for mono-, poly- and heteroaromatic hydrogenation activity under mild conditions
DownloadFall 2011
Nanoparticle catalysts have shown to be advantageous over traditional catalysts for many reasons and active for a wide variety of reactions. This thesis describes an approach for the synthesis and screening of heterogeneous multimetallic nanoparticle catalysts for aromatic hydrogenation activity...