NDLTD logo NDLTD Union Catalog and Global ETD Search

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 20 of 393 for “"ortho"”.

  1. Directed Ortho-Metalation of Dimethylarylamines

    Timmons, Michael

    … aromatic substitution (EAS) or directed ortho-metalation (DoM). Directed ortho-metalation (DoM) is an alternative aromatic substitution process initiated by organolithium reagents which provides regiospecific substitution exclusively at the ortho- position (equation). The focus of this …

    wku-diss Repository record

  2. Hindered Ortho-Vinyl Diaryl Ketones

    Mon, Mehm TinUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-05T19:37:30Z (GMT). No. of bitstreams: 1 6003963.pdf: 4746035 bytes, checksum: 00d9c931b32ed779c89550d2513bd144 (MD5) Previous issue date: 1960

    uiuc Repository record

  3. Regiospecific Synthesis of Ortho Substituted Phenols

    Balasainath, Ravindra Kotha

    … group (–OH), which is a strongly activating ortho/para directing group in aromatic electrophilic substitution (AES). AES gives a mixture of <em>ortho</em>-and <em>para</em> isomers, which must be separated.</p> <p>The strong directing ability of phenol can also result in multiple …

    wku-diss Repository record

  4. METAL HALIDE COMPLEXES OF ORTHO-QUINONES

    CROWLEY, PAUL J

    unh-thes Repository record

  5. Ortho-Planar Mechanisms for Microelectromechanical Systems

    Lusk, Craig P.2005

    A method for representing the design space of ortho-planar mechanisms has been developed. The method is based on the Theorem of Equality of Orientation Set Measures (TEOSM) which allows mechanisms to be represented by points in an abstract space. The method is first developed for single loop planar …

    byu Repository record

  6. The Ortho Lithiation of Tertiary Benzamides

    Brown, Roger AllenUniversity of Illinois at Urbana-Champaign2014

    … B(OMe)(,3) followed by H(,2)O(,2) to give the ortho substituted products in yields of 52-84%. Similarly, N-N-diisopropylbenzamide was treated with s- or n-BuLi-TMEDA followed by D(,2)O, MeOD, allyl bromide or CO(,2) to give ortho substituted products in yields of 21-87%. A mechanistic study …

    uiuc Repository record

  7. Synthese en thermolyse van ortho-dimethyl-1,3-cyclohexadienen

    Manders, P.A.1971

    eindhoven Repository record

  8. Compliant ortho-planar spring behavior under complex loads

    Rasmussen, Nathan Oliver2005

    … on the feasibility of applying compliant-ortho-planar springs (COPS) to rotational applications. The primary motivation of this research is the application of COPS to a continuously variable transmission (CVT). The design space limitations, loading conditions, stresses, stress …

    byu Repository record

  9. Synthesis and Properties of Ortho-Bridged Triarylmethyl Compounds

    Peters, Norman JohnUniversity of Illinois at Urbana-Champaign2014

    The stable carbocation salts 2-tert-butylsesquixanthydryl triflate (2-tert-butyl-4,8,12-trioxadibenzo{cd,mn}pyrenyl trifluoromethanesulfonate) (Ia) and 2,6,10-tri-tert-butylsesquixanthydryl triflate (Ib) are found to be highly delocalized by ('13)C NMR as is expected based on the HMO calculation.

    uiuc Repository record

  10. I. The Ortho Effect II. 1,2-Diaroylethylene Glycols

    McBurney, Charles HamiltonUniversity of Illinois at Urbana-Champaign1939

    uiuc Repository record

  11. Synthesis and reactivity of ortho-carborane functionalized boron species.

    Vashisth, Kanika, 1997-Baylor University.2026

    … the use of highly electron withdrawing and bulky ortho-carborane substituents as Lewis acids for Frustrated Lewis Pair (FLP) chemistry. FLP chemistry is a three-component reaction that involves the use of a Lewis acid (LA), Lewis base (LB) and a substrate. This chemistry has been applied in bond …

    baylor Repository record

  12. Magnetic Resonance Studies of Ortho-Substituted Derivatives of Triphenylmethane

    Sabacky, Milton JeromeUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-09T17:35:29Z (GMT). No. of bitstreams: 1 6607806.pdf: 4600909 bytes, checksum: f35f81cad41574e589debc1d88965bc4 (MD5) Previous issue date: 1966

    uiuc Repository record

  13. The ortho-para hydrogen equilibrium in the Uranus atmosphere

    Kahn, Gail Anne HeffnerMassachusetts Institute of Technology1979

    Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1979.

    mit Repository record

  14. Complex Cations in Microanalysis: The Application of 2, 2' Dipyridyl, Ortho-Phenanthroline, and Nitro-Ortho-Phenanthroline Complexes in the Microscopical Detection of Anions

    Markunas, Peter CharlesUniversity of Illinois at Urbana-Champaign1940

    uiuc Repository record

  15. Directed ortho Metalation in Hydrocarbon Solvents: Opposing Pi-Resonance Effects

    Woosley, Barry

    … reagents and do not typically support ortho-metalation reactions without the aid of a promoter. An exception would be an arene substrate having the capability to bidentate complex to the reactive alkyllithium dimer, which enables ortho-metalation to occur in high yields. A second, more …

    wku-diss Repository record

  16. The Synthesis of Hindered Symmetrical Di-Arylolefins and Ortho-Terphenyls

    Fraser, William DeanUniversity of Illinois at Urbana-Champaign1941

    uiuc Repository record

  17. The reaction of ortho-positronium with nitroaromatics via complex formation

    Madia, William JuulVirginia Polytechnic Institute and State University1975

    … was made to ascertain the mechanism by which ortho-positronium reacts with nitroaromatics in solution. These reactions are two to three orders of magnitude faster than expected by simple pickoff. Conjugation of the nitro group with the aromatic ring was found to be a necessary condition for …

    vt Repository record

  18. Directed Ortho-Metalation of the Three Methyl Anisoles in Various Media

    Friesen, Carl

    Directed ortho-metalation (DoM) is a very useful alternative to electrophillic aromatic substitution (EAS) for the synthesis of substituted aromatic compounds. DoM is highly regiospecific providing metalation chiefly in the ortho-position. However, lateral (a-) metalation of an alkyl side-chain and …

    wku-diss Repository record

  19. THE CRYSTAL AND MOLECULAR STRUCTURE OF TRIS(ORTHO-AMINOBENZOATO)AQUOYTTRIUM(III)

    BOUDREAU, SHARON MARTIN

    unh-thes Repository record

  20. Biomimetic synthesis of natural products via reactions of ortho-quinone methides

    Spence, Justin Thomas James2016

    … products. This thesis will describe the use ortho-quinone methides and cascade reactions towards the biomimetic synthesis of the penilactones A and B, the peniphenones A-D, virgatolide B and epicolactone. The total synthesis of ent-penilactone A and penilactone B has been achieved via …

    adelaide Repository record

Page 1 of 20