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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
251

Anthracene capped benzoxadisilole, naphthoxadisilole and isobenzofuran : applications in the preparations of triptycynes and iptycene derivatives

Pei, Baojian 01 January 2011 (has links)
No description available.
252

Synthesis and Characterization of Novel Fluorine Containing Alkylsulfonyls and Sulfonates : Fluorinated Sulfonyl Methanes and Derivatives

Holcomb, Nelson R. 07 July 1995 (has links)
A series of salts of the strong fluorocarbon acid bis(trifluoromethylsulfonyl)methane were made: (CF3S02 ) 2CHK, (CF3S02 ) 2CHLi, [ (CF3S02 ) 2CH] 2Ca, [ (CF3S02 ) 2CH] 2Hg, (CF3S02 ) 2CHAg, [ (CF3S02 ) 2CH] 3La. Their reactivity and use as organic intermediates were investigated. The salts were made from their corresponding carbonates, oxides, or hydrides. The reaction times for the salts is generally short, however the purification process was laborious, involving recrystallization from organic solvents and drying under vacuum. The lithium salt is being evaluated as a solid state battery electrolyte. Derivatives of bis(trifluoromethylsulfonyl)methane were made by using the salts as nucleophiles in organic reactions. Reactions with Br2 , CH2=CH2CH2Br, CH3CH2CH2I, and OCH2CHCH2Br were carried out to make: bis(trifluormethylsulfonyl)bromomethane, 4,4-bis(trifluormethylsulfonyl)butene-1, 1,1-bis(trifluormethylsulfonyl)butane, and 4,4-bis(trifluormethylsulfonyl)-1,3-epoxybutane In addition, work was carried out on the synthesis of the polymer -(-O-CH2-C(CH20CF2CF2S02F)H-)n- and the corresponding lithium salt. The polymer was treated with aqueous lithium hydroxide in order to convert the S02F group to a S03-Li+ group. This salt is being investigated as a solid state ion conducting polymer. All products were characterized by infrared spectroscopy, mass spectroscopy, 1H and 19F nuclear magnetic resonance spectroscopy, elemental analysis, and melting points.
253

Synthesis of methyl 2,3,6-tri-0-benzyl-a-D-hexopyranosides.

Manca, Adriano January 1970 (has links)
No description available.
254

The synthesis of methyl trihydroxyeicosatrienoates and related compounds /

Chong, Chit-Looi. January 1983 (has links)
No description available.
255

Theory guided design and molecular engineering of organic materials for enhanced second-order nonlinear optical properties /

Sullivan, Philip A., January 2006 (has links)
Thesis (Ph. D.)--University of Washington, 2006. / Vita. Includes bibliographical references (leaves 186-200).
256

Enantioselective total synthesis of (-)-16-hydroxytriptolide

Lui, Bob. January 2005 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2006. / Title proper from title frame. Also available in printed format.
257

Total synthesis of (+)-bourgeanic acid and conformational analysis of its dilactone

Johnson, Alan T. (Alan Thomas), 1957- 15 November 1990 (has links)
Graduation date: 1991
258

Kinetic and physic models of secondary organic aerosol formation and their application to Houston conditions

Dechapanya, Wipawee. January 2002 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.
259

Application of comparative molecular field analysis for predicting microbial sulfoxidation /

Huang, Wen-hsin, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 203-215). Available also in a digital version from Dissertation Abstracts.
260

Biofiltration of volatile organic compounds using fungal-based bioreactors

Woertz, Jennifer Renee. Kinney, Kerry A., January 2002 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Supervisor: Kerry A. Kinney. Vita. Includes bibliographical references. Also available from UMI.

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