Search Constraints

Start Over
Filtering by: Creator Weigt, Lee A. Remove constraint Creator: Weigt, Lee A. Academic Affiliation Chemistry Remove constraint Academic Affiliation: Chemistry

Search Results

  • Total synthesis of phorboxazole A

    Creator:
    Lee, Tae Hee
    Abstract:
    The total synthesis of a highly potent cytotoxic marine natural product, phorboxazole A, is described. Both a palladium(II)-mediated and a palladium(II)-catalyzed intramolecular alkoxycarbonylation were used as key steps for the preparation of the two cis-2,6-disubstituted tetrahydropyran rings (C22-C26 and C11-C15) of phorboxazole A. The synthesis used a convergent approach involving...
    Resource Type:
    Dissertation
    Full Text:
    Rights Reserved TOTAL SYNTHESIS OF PHORBOXAZOLE A by Tae Hee Lee

  • A study of the photolysis of the aqueous thymine system at 214 nm, 229 nm and 254 nm

    Creator:
    Satcher, Robert Lee
    Abstract:
    The photolysis of the aqueous thymine system has been investigated at 214 nm, 229 nm and 254 nm at room temperature. Products of photolysis have been identified as hydrogen peroxide, 6-hydroxy-5- hydroperoxy thymine and tentatively 5-hydroxy-6-hydroperoxy thymine. These together with thymine loss, were determined quantitatively under a variety of conditions....
    Resource Type:
    Dissertation
    Full Text:
    254 nm by Robert Lee Satcher A THESIS submitted to Oregon State University in partial

  • A U.V. spectrophotometric study of the kinetics of some nucleophilic displacement reactions involving hydroxylamine-O-sulfonate ion

    Creator:
    Lee, Albert Punpong
    Resource Type:
    Masters Thesis
    Full Text:
    Nucleophilic Displacement Reactions Involving Hydroxylamine-O-Sulfonate Ion by Albert Punpong Lee A THESIS

  • Optimization of the continuous analysis Pearl-Benson method for lignosulfonates

    Creator:
    Blaine, Roger Lee
    Abstract:
    A procedure is described for the optimization of a previously described continuous analysis adaptation of the Pearl-Benson or nitroso method for estimation of spent sulfite liquor (SSL) or ligno-sulfonates. The optimized procedure has a response time of 6.5 minutes. In order to monitor samples whose SSL concentration is between 0...
    Resource Type:
    Dissertation
    Full Text:
    of the Continuous Analysis Pearl-Benson Method for Lignosulfonates by Roger Lee Blaine A THESIS

  • 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:
    . The Photochemistry of Polychlorobenzenes in Micellar Media by Youn-Sik Lee A THESIS submitted to

  • Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

    Creator:
    Lee, Gae Ho
    Abstract:
    Plasma sources with multiple electrodes have been developed and characterized in this research for atomic emission spectroscopy. Multi-electrode plasma sources use electrodes to shape the plasma in order to continuously entrain a sample stream in the center of hot plasma, in a manner similar to an inductively coupled plasma (ICP)...
    Resource Type:
    Dissertation
    Full Text:
    Lee A THESIS submitted to Oregon State University in partial fulfillment of the requirements for

  • Proton-neutron-hole states in antimony isotopes populated in the beta decay of ¹²⁸SN and ¹³⁰SN

    Creator:
    Nunnelley, Lewis Lee
    Abstract:
    ¹³⁰ Sn and ¹²⁸Sn were separated from mixed fission products. The decay of these isotopes were studied with Ge(Li), LEPS, and plastic scintillator detector systems in single and two parameter coincidence modes. The decay scheme constructed for ¹²⁸Sn decay has levels at 0.0 (5+), 45.7 (4+), 77.8 (3+), 152.9 (2+),...
    Resource Type:
    Dissertation
    Full Text:
    Lee Nunnelley A THESIS submitted to Oregon State University in partial fulfillment of the

  • Catalytic rearrangement of cyclodeca-1,2,5-triene and oxymercuration of bicyclo-[7.1.0]-deca-2,3-diene

    Creator:
    Boop, Janice Lee
    Abstract:
    The reaction of cyclodeca-1,215triene with mercuric salts gave only rearranged hydrocarbon, tricyclo[4.4.0.0²'⁴]deca-5ene in acetic acid. Other catalysts [Rh(CO)₂C1]₂ and AgC10₄ gave the same rearranged hydrocarbon. The isomerization is proposed to proceed through a "metalcomplexed" carbenoid intermediate. The reaction of bicyclo[7.1.0 ]deca-213diene gave oxymercurated products.
    Resource Type:
    Masters Thesis
    Full Text:
    through a "metalcomplexed" carbenoid intermediate. The reaction of bicyclo[7.1.0 ]deca-213diene gave

  • The normal vibrational analysis of polyacetaldehyde

    Creator:
    Lee, Dorothy
    Abstract:
    A method of calculating the normal vibrations of polymer molecules is presented in detail. The method is based on that used by Schachtschneider and Snyder in their analysis of polypropylene but has not heretofore been published. The factoring of the infinite matrix and reduction to the coordinates of the unit...
    Resource Type:
    Dissertation
    Full Text:
    . THE NORMAL VIBRATIONAL ANALYSIS OF POLYACETALDEHYDE by DOROTHY LEE A THESIS subrnitted to OREGON

  • The chemistry of certain tetrahydropyrimidines

    Creator:
    Anderson, Donna Lee
    Abstract:
    Since many 1, 4, 5, 6-tetrahydropyrimidines have become available and commercially useful in recent years, a study of the chemistry of certain of these compounds has been undertaken. 2-Hydroxy- and 2-mercapto-1, 4, 5, 6-tetrahydropyrimidine have been synthesized by the condensation of urea and thiourea, respectively, with 1, 3-propanediamine, with yields...
    Resource Type:
    Masters Thesis
    Full Text:
    pyrimidines. THE CHEMISTRY OF CERTAIN TE TR AHYD R O PY R IMID IN ES by DONNA LEE ANDERSON A THESIS