Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"Redox Catalysis"”.
-
Enantioselective alkene difunctionalization enabled by organochalcogen catalysis I. Lewis base-catalyzed sulfenium ion transfer II. Organoselenium redox catalysis
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
-
Mechanisms of multielectron redox catalysis with low-valent cobalt: defining the roles of coordination number, stereoelectronics and field effects in selectivity for two-electron chemistry
Embargo set by: Seth Robbins for item 91490 Lift date: 2018-03-08T17:22:13Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system
-
Diagnosing Band-Mediated Electrochemical Half-Reaction Mechanisms and Identifying the Unique Features Thereof
Redox catalysis is pervasive in both benchtop and industrial scale chemistry as a means of introducing and interconverting between key functional groups as well as, increasingly, a means to elaborate carbon skeletons. Further development of redox catalysis methods is of central importance as we …
-
Electrochemical oxidation of aliphatic carboxylates: Kinetics, thermodynamics, and evidence for a shift from a concerted to a stepwise mechanism in the presence of water
… mechanism. Indirect electrolysis (homogeneous redox catalysis) was also employed as an alternative and independent approach to quantify the oxidation potentials of carboxylates. A series of substituted ferrocenes were investigated as mediators for the oxidation of tetra-n-butylammonium acetate. …
-
Electrophilic C(sp²)–H Cyanation with Inorganic Cyanate (OCN⁻) by Pᴵᴵᴵ/Pⱽ=O-Catalyzed Phase Transfer Activation
… by halide displacement on a halophosphonium. Redox catalysis is enabled by the usage of a strained phosphine (phosphetane) so that catalyst turnover from phosphine oxide to phosphine can be easily achieved by the usage of a terminal hydrosilane reductant. These results demonstrate the …
-
Reductive and oxidative dissociative electron transfers: transition between the concerted and stepwise mechanistic pathways
… and indirect electrochemical (homogeneous redox catalysis) reductions of the epoxyketones are presented. In cases where the ring-closed radical anion generated by reduction of the epoxyketones is resonance stabilized (aromatic epoxyketones) the mechanism proceeds in a stepwise fashion, …
-
Electron transfer in solution : nonadiabatic dynamics and applications to catalysis
… many chemical processes, including heterogeneous redox catalysis and photochemistry-processes which are fundamental in energy storage and solar energy conversion, among other applications. In this thesis, we first apply density functional theory (DFT) to study the mechanistic intermediates of the …
-
Syntheseses [sic] and evaluation of porphyrin derivatives for applications in medicine and in material science
… find application in the area of multi-electron redox catalysis. Chapter 6 reports a new efficient synthetic route to carbohydrate-porphyrin conjugates.
-
I. Synthesis of Ascarosides for Chemical Biology Studies in Caenorhabditis elegans, II. A Photochemical Approach to Delavayine, and III. Remote Hydroxylation by Radical Translocation and Polar Crossover
… strategy for remote C-H functionalization using redox catalysis. The Tzo directing group was used to effect 1,6- and 1,7-hydrogen atom transfers from unactivated aliphatics. The resulting radicals were then oxidized by redox (or photoredox) catalysis to form a carbocation that was ultimately …
-
Characterizing the Roles of Sufb and Sufa in Fe-S Cluster Assembly and Trafficking in Suf Pathway
… for their roles in electron transport as well as redox and non-redox catalysis. Three Fe-S cluster assembly systems: Nif, Isc, and Suf have been identified. The sufABCDSE operon is activated in E. coli to build Fe-S clusters under oxidative stress and iron starvation conditions. Despite the …
-
Design, Synthesis and Spectroscopy of Highly Absorptive Chromophores Based on the Bis(tridentate)metal-ethyne-(porphinato)metal Molecular Framework for Solar Energy Conversion
… cells, photoelectrochemical cells, and photo-redox catalysis. In this dissertation, the design, synthesis and spectroscopy of a series of different highly absorptive chromophoric systems based on the bis(tridentate)metal-ethyne-(porphinato)metal molecular framework are introduced and …
-
Thermochemical Interconnectivities of Active Sites on Metal Oxides and their Catalytic Consequences in C−O Formation and C−H Scission Chemistry
… and the anionic lattice O-atoms serve as redox sites (O*). These active sites coexist and collectively catalyze both parallel and sequential reactions during the upgrading of light alkanols and alkanes into value-added chemicals, yet their intrinsic thermochemical and electronic …
-
Selenium redox-catalyzed alkene syn-difunctionalization
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
-
Understanding the Structure-Property Relationships of Highly Well-Defined Metal Nodes over MIL-100(Cr) and its Derivatives
… as gas storage, separation, and heterogeneous catalysis. In our first project, we explored CO2 adsorption onto isostructural Al-, Fe-, and Cr-containing MIL-100(M) materials, and show that CO2 adsorption can be amplified through larger open-metal site densities achieved using thermal activation …