http://hdl.handle.net/10125/1383 Sun, 26 May 2013 05:39:35 GMT 2013-05-26T05:39:35Z http://hdl.handle.net/10125/20476 Thesis (Ph.D.)--University of Hawaii at Manoa, 2008.; A crucial obstacle to the realization of a "hydrogen economy" is the development of practical means of on-board hydrogen storage. Storing hydrogen as a gas at high pressures, or as a liquid at cryogenic temperatures, is impractical due to safety concerns and volumetric constraints. This has prompted extensive efforts to develop solid hydrogen-storage systems, such as metal hydrides, advanced carbons, and metal organic frameworks, for vehicular use.; In 1997, Bogdanovic and Schwickardi reported that hydrogen could be reversibly evolved from solid sodium alanate (NaAlH4) under moderate conditions upon mixing the hydride with a few mole percent of selected transition metal complexes. Yet, over a decade later, the fundamental basis of the kinetic enhancement of hydrogen cycling that arises upon doping remains unresolved. An understanding of this novel solid-state chemistry would be significant to the efforts of developing other complex metal hydrides for hydrogen storage. Thus, our studies have focused on elucidating the nature of the dopants and the structural effects they exert on NaAlH4 through various spectroscopic techniques.; The titanium dopant was characterized through electron paramagnetic resonance studies. Anelastic spectroscopy studies revealed the formation of point defects during dehydrogenation of Ti-doped NaAlH4. The formation of defects was subsequently supported by positron annihilation spectroscopy. Muon spin rotation studies further elucidated the hydrogen dynamics of dehydrogenation. The results of these studies, which connect previous findings and lead to a better understanding of the enigma of Ti-doped NaAlH4, will be presented.; Includes bibliographical references.; Also available by subscription via World Wide Web; 114 leaves, bound 29 cm Tue, 01 Jan 2008 00:00:00 GMT http://hdl.handle.net/10125/20476 2008-01-01T00:00:00Z Kuba, Meredith T http://hdl.handle.net/10125/20475 Thesis (M.S.)--University of Hawaii at Manoa, 2007.; Includes bibliographical references (leaves 55-57).; xiv, 57 leaves, bound 29 cm Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10125/20475 2007-01-01T00:00:00Z Dalton, Todd H http://hdl.handle.net/10125/20474 Thesis (M.S.)--University of Hawaii at Manoa, 2007.; Includes bibliographical references (leaves 54-55).; xi, 55 leaves, bound 29 cm Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10125/20474 2007-01-01T00:00:00Z Ayabe, Reyna Michelle Y http://hdl.handle.net/10125/20473 Thesis (M.S.)--University of Hawaii at Manoa, 2007.; Includes bibliographical references (leaves 87-92).; viii, 92 leaves, bound ill. 29 cm Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10125/20473 2007-01-01T00:00:00Z Eliseo, Jennifer R http://hdl.handle.net/10125/20472 Thesis (M.S.)--University of Hawaii at Manoa, 2007.; Includes bibliographical references.; xviii, 406 leaves, bound ill. 29 cm Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10125/20472 2007-01-01T00:00:00Z Bennett, Christopher J (Christopher James), 1979 http://hdl.handle.net/10125/20471 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references (leaves 83-86).; x, 86 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20471 2006-01-01T00:00:00Z Wan, Lifeng http://hdl.handle.net/10125/20470 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references (leaves 72-75).; xiv, 75 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20470 2006-01-01T00:00:00Z Philmus, Benjamin http://hdl.handle.net/10125/20469 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references.; xi, 133 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20469 2006-01-01T00:00:00Z Melnichuk, Anna http://hdl.handle.net/10125/20468 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references.; xiv, 99 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20468 2006-01-01T00:00:00Z Tokeshi, Bradley K http://hdl.handle.net/10125/20467 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references (p. 63).; xi, 101 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20467 2006-01-01T00:00:00Z Dhoro, Francis http://hdl.handle.net/10125/20466 Thesis (M.S.)--University of Hawaii at Manoa, 2006.; Includes bibliographical references (leaves 56-58).; xiii, 58 leaves, bound ill. 29 cm Sun, 01 Jan 2006 00:00:00 GMT http://hdl.handle.net/10125/20466 2006-01-01T00:00:00Z Brown, Caleb M http://hdl.handle.net/10125/20465 Thesis (Ph.D.)--University of Hawaii at Manoa, 2008.; Five-membered rings are common structural motifs in many important natural products. In general, the synthesis of highly functionalized five-membered rings, particularly with stereocontrol, is not as highly developed as that for six-membered rings. Thus, the pursuit of new methodologies towards this end is of great importance in synthetic chemistry. While there are several strategies for making five-membered rings, the Nazarov reaction is one that is particularly efficient in installing multiple stereogenic centers through a single operation. This thesis describes some recent progress for this reaction.; In Chapter 1, the Nazarov reaction is introduced. A mechanism of the reaction is first described and a discussion of recent advances follows. The recent advances are discussed in the context of new variations of the reaction and the pioneering work towards asymmetric cyclopentannelation.; In Chapter 2, we discuss how the synthesis and screening of a number of sugar-derived auxiliaries have paved the way to two superior chiral auxiliaries for the allene and the optimization of the reaction conditions for the Nazarov cyclization. The scope of each sugar-derived allene under the optimized conditions has been demonstrated through their reactions with a variety of morpholino enamides and in one case, an alpha,beta-unsaturated butyrolactone. Additionally, we report a more detailed, well-substantiated mechanistic hypothesis for the asymmetric allenyl ether Nazarov reaction that rationalizes the stereochemical outcome of our products. This model will aid in the design of simpler chiral allenyl ethers with non-sugar based scaffolds.; In Chapter 3, we describe a triply-convergent cyclopentannelation reaction. This work is an extension of an existing methodology developed by our group that expands the scope and versatility of our allenyl ether Nazarov reaction.; Lastly, in Chapter 4 we discuss ongoing work towards the development of a catalytic asymmetric Nazarov cyclization. Two approaches are described using alpha-alkoxy-substituted divinyl ketones. In the first approach, asymmetry is introduced through the use of chiral oxophilic Lewis acids. In the second approach, chiral ligands are employed as a means for transferring chiral information in our unique palladium(II)-catalyzed Nazarov reaction.; Includes bibliographical references.; Also available by subscription via World Wide Web; 233 leaves, bound 29 cm Tue, 01 Jan 2008 00:00:00 GMT http://hdl.handle.net/10125/20465 2008-01-01T00:00:00Z Banaag, April Rose http://hdl.handle.net/10125/15251 Typescript. Thesis (Ph. D.)--University of Hawaii, 1959. Bibliography: leaves 80-82. Mon, 01 Jun 1959 00:00:00 GMT http://hdl.handle.net/10125/15251 1959-06-01T00:00:00Z Hiu, Dawes Kyukleu http://hdl.handle.net/10125/15075 Typescript. Thesis (Ph. D.)--University of Hawaii, 1959. Bibliography: leaves 78-82. Mon, 01 Jun 1959 00:00:00 GMT http://hdl.handle.net/10125/15075 1959-06-01T00:00:00Z Swanholm, Carl http://hdl.handle.net/10125/14991 Typescript. Thesis (Ph. D.)--University of Hawaii, 1958. Bibliography: leaves [75]-79. Sat, 01 Feb 1958 00:00:00 GMT http://hdl.handle.net/10125/14991 1958-02-01T00:00:00Z Sutherland, Graham http://hdl.handle.net/10125/14972 Typescript. Thesis (Ph. D.)--University of Hawaii, 1958. Bibliography: leaves [84]-87. Sat, 01 Feb 1958 00:00:00 GMT http://hdl.handle.net/10125/14972 1958-02-01T00:00:00Z Fujii, Charles http://hdl.handle.net/10125/13496 Typescript. Thesis (Ph. D.)--University of Hawaii, 1951. Bibliography: leaves [98]-103. Fri, 01 Jun 1951 00:00:00 GMT http://hdl.handle.net/10125/13496 1951-06-01T00:00:00Z Zeitlin, Harry http://hdl.handle.net/10125/13475 Typescript. Thesis (Ph. D.)--University of Hawaii, 1938. Bibliography: leaves 150-158. Sat, 01 Jan 1938 00:00:00 GMT http://hdl.handle.net/10125/13475 1938-01-01T00:00:00Z Westgate, Mark http://hdl.handle.net/10125/12023 Typescript.; Thesis (M. S.)--University of Hawaii, 1969.; Bibliography: leaves 103-107.; vii, 107 l illus Wed, 01 Jan 1969 00:00:00 GMT http://hdl.handle.net/10125/12023 1969-01-01T00:00:00Z Noble, Clyde S http://hdl.handle.net/10125/11433 Typescript.; Thesis (Ph. D.)--University of Hawaii at Manoa, 1977.; Bibliography: leaves 229-230.; Microfiche.; xii, 236 leaves ill Sat, 01 Jan 1977 00:00:00 GMT http://hdl.handle.net/10125/11433 1977-01-01T00:00:00Z Baird, Ronald J