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  • Computational Rationalizations of Mechanism and Stereocontrol in Small-Molecule Lewis Base Organocatalysis

    Creator:
    McCauley-Walden, Daniel W.
    Abstract:
    My work has focused on investigating synthetic organic reactions using applied computational methods. Non-covalent interactions are critical to catalysis, mechanism, and stereoselectivity, with the most prominent interaction for isothioureas being the S···O contact between the catalyst sulfur atom and the oxygen of the acyl group. A comprehensive joint experimental and...
    Resource Type:
    Dissertation
    Full Text:
    . Chem. Soc. 2015, 137, 1706– 1725. 4 Birman, V. B; Uffman, E. W.; Jiang, H.; Li, X.; Kilban, C. J

  • Studies towards the total synthesis of (-)-gymnodimine

    Creator:
    Wang, Guoqiang
    Abstract:
    Studies towards the total synthesis of (-)-gymnodimine (1), a marine neurotoxin with a unique molecular architecture and pronounced biological activity, are described. These studies resulted in a convergent approach to the advanced intermediate 315, containing the C3-C32 section of 1. Two synthetic routes were developed to construct the tetrahydrofuran subunit...
    Resource Type:
    Dissertation
    Full Text:
    (1) A1 = OH, R2 = H Gymnodimine C (3) R1 = H, A2 = H 18-Deoxygymnodimine B (4) Figure 1.2

  • The kinetic and radiolytic aspects of control of the redox speciation of neptunium in solutions of nitric acid

    Creator:
    Precek, Martin
    Abstract:
    Neptunium, with its rich redox chemistry, has a special position in the chemistry of actinides. With a decades-long history of development of aqueous separation methods for used nuclear fuel (UNF), management of neptunium remains an unresolved issue because of its not clearly defined redox speciation. Neptunium is present in two,...
    Resource Type:
    Dissertation
    Full Text:
    .................................................... 82 4 Kinetics of Oxidation of Pentavalent Neptunium by Pentavalent Vanadium in Solutions of Nitric

  • Application of flow injection analysis to enzymatic fluorescence kinetic methods

    Creator:
    Elliott, Colin Bruce
    Abstract:
    Studies of the use of NADH as the monitored fluorophore for enzymatic fluorescence kinetic methods are discussed. Interference studies for the detection of NADH and the adaptation and optimization of fluorescence kinetic measurements to four serum assays are also described. A microcomputer-controlled flow injection analysis (FIA) system was designed and...
    Resource Type:
    Dissertation
    Full Text:
    fluorescence ratemeter instrument 25 4. Schematic diagram of the FIA-merging zones system 29 5. Diagram of