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Filtering by: Advisor Freeman, Peter K. Remove constraint Advisor: Freeman, Peter K. Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • The use of the Diels-Alder reaction in asymmetric synthesis

    Creator:
    Dei Rossi, Dale Raymond
    Abstract:
    The Diels-Alder reaction represents a promising tool for use in asymmetric synthesis. The reaction involves a rigid transition state that facilitates the formation of one diastereomeric transition state and is reversible. This satisfies two necessary criteria for asymmetric synthesis. The Diels-Alder reactions of 1,l-dialkylspiro[2.4]-4,6- heptadienes with maleic anhydride and p-benzoquinone...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract Approved: Redacted for Privacy Peter K. Freeman The Diels-Alder reaction represents a promising

  • Carbene chemistry : I. Stereochemical integrity at Cα in ketone tosylhydrazones : II. Hydrogen migration in 2-carbena-6, 6-dimethylnorbornane

    Creator:
    Balyeat, John Robert
    Abstract:
    The tosylhydrazones of exo-3-deuteriocamphor and 2- deuterio-2,4-dimethy1-3-pentanone were treated with Nbromosuccinimide (NBS) and pyruvic acid to regenerate the parent ketones. The ketones from the pyruvic acid cleavage show a significant loss of deuterium. The ketones from the NBS cleavage show no loss of deuterium, indicating that stereochemical integrity at. C[subscript...
    Resource Type:
    Masters Thesis
    Full Text:
    -DIMETHYLNORBORNANE Redacted for Privacy Abstract approved: Dr. Peter K. Freeman The tosylhydrazones of exo-3

  • The photochemistry of some O-(methylcarbamoyl) oximes

    Creator:
    McCarthy, Kermit D.
    Abstract:
    The photochemistry of aldicarb and two related compounds, 0-(methylcarbamoyl) isobutyraldehyde oxime and 0-(methylcarbamoyl) trimethylacetaldehyde oxime was explored under laboratory conditions. Upon irradiation aldicarb decomposed rapidly to methylamine, dimethylamine, tetramethylsuccinonitrile, and 1-methylthio-2, 3-dicyano-2, 3-dimethylbutane. The other two compounds decomposed only after a long period of irradiation. The difference in reactivity was...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Redacted for Privacy Dr. Peter K. Freeman The photochemistry of aldicarb and two related

  • The photochemical transformation of oxime carbamates

    Creator:
    Ndip, Edmund Moses Nso
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Redacted for privacy Dr. Peter K. Freeman The photolysis of aldicarb (Z) (CH3CN, 254 nm) yields

  • Mechanistic studies of vinylic carbenes in dimethyl sulfoxide

    Creator:
    Tafesh, Ahmed Mohammed
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Redacted for privacy Dr. Peter K. Freeman The effect of conjugation with double bonds on the

  • The photochemistry of some polyhalobenzenes

    Creator:
    Huang, Yo-hsin
    Resource Type:
    Masters Thesis
    Full Text:
    Dr. Peter K. Freeman The photodechlorination of fluoropentachlorobenzene was carried out by

  • A study of the chemistry of diisopropyl-, cyclopropylisopropyl-, and dicyclopropylcarbene

    Creator:
    Wuerch, Stephen E.
    Abstract:
    The effect of the conjugation with cyclopropyl rings on the activation parameters for the formation of carbenes from the corresponding diazo compounds was investigated using diisopropylcarbene (46), cyclopropyl-isopropylcarbene (47), and dicyclopropylcarbene (48). Each of these three carbenes was generated by the thermolysis of the parent benzenesulfonylhydrazone potassium salts using DMSO...
    Resource Type:
    Masters Thesis
    Full Text:
    . Peter K. Freeman The effect of the conjugation with cyclopropyl rings on the activation parameters for

  • The photochemistry of polychlorobenzenes in micellar media

    Creator:
    Lee, Youn-Sik
    Abstract:
    Photolysis of pentachlorobenzene was carried out in the absence of an electron donor species at 254 nm in cetyltrimethylammonium bromide surfactant solution. The results are consistent with the excited triplet undergoing homolytic cleavage of a C-Cl bond in competition with formation of the excimer, in which the radical anion undergoes...
    Resource Type:
    Masters Thesis
    Full Text:
    privacy Abstract approved : Dr. Peter. K. Freeman Photolysis of pentachlorobenzene was carried out in

  • Investigations into the mechanism of the photodechlorination of pentachlorobenzene

    Creator:
    Schmidt, Robert Dean
    Abstract:
    Several experiments were undertaken to investigate the mechanism of photodechlorination of pentachlorobenzene. The thermal methoxydechlorination reaction of pentachlorobenzene was studied. In DMSO at 50 °C sodium methoxide reacts smoothly with pentachlorobenzene to give three tetrachloroanisole isomers. A second-order kinetic plot for this reaction is linear to high precision, indicating that...
    Resource Type:
    Masters Thesis
    Full Text:
    Photodechlorination of Pentachlorobenzene. Abstract approved: Redacted for Privacy Peter K. Freeman Several

  • Mechanisms of photohydrodebromination of bromoarenes

    Creator:
    Carlson, J. Eric
    Abstract:
    The photohydrodebromination of brominated paracyclophanes was studied to help elucidate the possible mechanistic pathways leading to product for bromoarenes in general. Several brominated [2.2]paracyclophanes were studied to determine the effect of substitution patterns on this reaction. [2.2]Paracyclophanes were chosen for this study in order to investigate possible intramolecular excimer formation...
    Resource Type:
    Masters Thesis
    Full Text:
    . Ramnath Iyer, and, my advisor, Dr. P. K. Freeman for helping to get me started on this research project