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Filtering by: Committee Member O'Neill, J. Philip Remove constraint Committee Member: O'Neill, J. Philip Academic Affiliation Chemistry Remove constraint Academic Affiliation: Chemistry

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  • Broadening the scope of the modified-Julia reaction : a mild and stereoselective method for the synthesis of (Z)-configurated α,β-unsaturated lactones

    Creator:
    Giesbrecht, Heath Eugene
    Abstract:
    An intramolecular variant of the modified-Julia olefination was demonstrated by the synthesis of α,β-unsaturated lactones in a mild and (Z)-selective fashion. The lynchpin reagent (benzothiazol-2-sulfonyl) acetic acid was synthesized in a straightforward fashion in 86% overall yield from commercially available 2-mercaptobenzothiazole via conversion to ethyl (benzothiazol-2-ylthio)acetate by base mediated alkylation...
    Resource Type:
    Masters Thesis
    Full Text:
    …………………………… 39 32. 12-membered α,β-unsaturated lactone formation………... 40 33. 13-membered α,β-unsaturated

  • Development of Methods for Stereoselective Carbon-Carbon Bond Formation

    Creator:
    Wu, Zhenhua
    Abstract:
    Three distinct methods to achieve the stereoselective synthesis of carbon-carbon bonds were investigated, encompassing: (i) the formation of axially chiral biaryl molecules by enantioselective Suzuki cross-coupling, (ii) the synthesis of α-phenylalkylboronic esters by enantioselective chain extension, and (iii) the stereospecific synthesis of alkenes by eliminative cross-coupling of enantioenriched sp³-hybridized carbenoids....
    Resource Type:
    Dissertation
    Full Text:
    boronates with a combination of O- (-lithiobenzyl)-N,N-diisopropylcarbamate and ligand 3,3-bis[(4S)-4,5

  • Synthesis and study of oxides and chalcogenides : thin films and crystals

    Creator:
    Park, Sangmoon
    Abstract:
    Several types of solid-state inorganic materials are prepared and characterized. By using the SILAR (Successive Ionic Layer Adsorption and Reaction) deposition method in conjunction with hydrothermal dehydration both low-temperature deposition and crystallization of oxide thin films are achieved. Various aspects of new transparent p-type materials are studied by examining both...
    Resource Type:
    Dissertation
    Full Text:
    appreciation to my Ph.D. committee members and former committee members: Dr. Arthur W. Sleight, Dr. Philip R

  • Total synthesis of sparteine alkaloids from a common tetraoxobispidine intermediate

    Creator:
    Melbardis, John
    Abstract:
    In previous work (Blakemore et al. Org. Lett. 2005, 7, 4721; Heterocycles 2006, 70, 609), successful elaborations of the lupine alkaloids (±)-α-isosparteine (dl-2) and (±)-β-isosparteine (dl-3) were realized from a common tetraoxobispidine precursor, 3,7-diallyl -2,4,6,8-tetraoxo-3,7-diazabicyclo[3.3.1]nonane (93). Herein, the tetraoxobispidine approach to lupine alkaloids was extended to a total synthesis of...
    Resource Type:
    Masters Thesis
    Full Text:
    ). N NH N NH N NH2 35 39 40 HRef. 43 Schopf (1962) NH2OCH3 MeOH-H2O, rt 98% H OCH3 O O

  • Atmospheric trace element abundances associated with slash burning

    Creator:
    Ungerer, Carl Andre
    Abstract:
    The atmospheric trace element abundances associated with slash burning have been measured by instrumental neutron activation analysis (INAA). On site ground level samples were collected during the slash burning season using high volume samplers and a cascade impactor. In addition to the air samples, soil, wood and ashed wood samples...
    Resource Type:
    Masters Thesis
    Full Text:
    10 0 A 0 0 10.1E o 1.0 0.4 A a 0 0 0 7 ° 2 0 A a 0 o 0 A A 0 o ° 20 0 0 7 0 s 7 A a Of C 3