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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.
1

Investigation in the oxazole group ...

Mikeska, Vladis Julius, January 1934 (has links)
Thesis (Ph. D.)--Columbia University, 1934. / Vita. Bibliography: p. [33].
2

The chemistry of palladacycles derived from phenyl-oxazolines /

Kozlik, Roza Maria. January 2007 (has links)
Thesis (Ph. D.)--University of Nevada, Reno, 2007. / "May, 2007." Includes bibliographical references. Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2008]. 1 microfilm reel ; 35 mm. Online version available on the World Wide Web.
3

The total synthesis of curacin A and muscoride A

Muir, James C. January 1998 (has links)
No description available.
4

Synthesis of 3-arylisoxazoles and 5-arylisoxazoles

Pertler, Stephanie L. January 2006 (has links)
The goal of this research project was to synthesize a small library of 3- and 5-arylisoxazoles. These compounds are of interest because of potential biological activity similar to Fipronil. Fipronil is used commercially in the agrochemical industry and exhibits pesticidal activity as a noncompetitive inhibitor of the GABA receptor. By deleting the amino group normally at the 5-position and the cyano group normally at the 3-position and changing the atoms in the heterocyclic ring from containing two nitrogen atoms to one nitrogen and one oxygen atom, we hope to create changes in the binding so the geometry of the GABA receptor may be better understood.The synthesis of our target compounds consisted of many steps. First, brominated intermediates were made from commercially available compounds. The brominated intermediates were converted to aldehydes, which then produced oximes. The oximes were then combined with alkynes through a 1,3-dipolar cycloaddition to form the arylisoxazoles. / Department of Chemistry
5

A study of the photochemistry of pyridinium salts

Bennett, Christopher James January 2000 (has links)
No description available.
6

Synthetic approaches to diazonamide A

Hind, Sarah Lucy January 1998 (has links)
No description available.
7

Postemergence activity of isoxaflutole on cool-season turfgrass and weed species in turfgrass environments /

Drohen, James Andrew 01 January 1999 (has links) (PDF)
No description available.
8

Estudo da aplicação de derivados oxazolônicos como sondas fluorescentes e solvatocrômicas na investigação de solventes puros / Study of the application of oxazolonic derivatives as fluorescent and solvatocromic probes in the investigation of pure solvents.

Santos, Taianne D'Angelo dos 13 December 2018 (has links)
Submitted by Marilene Donadel (marilene.donadel@unioeste.br) on 2019-03-22T20:26:53Z No. of bitstreams: 1 Taianne_Santos_2018.pdf: 3173420 bytes, checksum: 18942f680866870efd7ed25716d1d429 (MD5) / Made available in DSpace on 2019-03-22T20:26:53Z (GMT). No. of bitstreams: 1 Taianne_Santos_2018.pdf: 3173420 bytes, checksum: 18942f680866870efd7ed25716d1d429 (MD5) Previous issue date: 2018-12-13 / This work reports the use of two oxazolonic derivatives, 4- (4- (N, N) dimethylaminobenzylidene) -2-phenyl-1,3-oxazol-5 (4H) -one (AZA2) and 4- (4- nitrobenzylidene) -2-phenyl-1,3-oxazol-5 (4H) -one (AZA8) as fluorescent probes in the detection of histamine. However, these compounds showed low reactivity of the oxazolonic nucleus against the analyte under mild conditions. Therefore, taking advantage of the absorptive and emissive properties of the oxazolonic derivatives, it was thought to use these derivatives as solvatochromic probes in the investigation of pure solvents. Thus, in addition to the aforementioned derivatives (AZA2 and AZA8), two further derivatives for this purpose were also tested for 4- (4-methoxy-benzylidene) -2-phenyl-1,3-oxazol-5 (4H) - (AZA10) and 4- (3-chlorobenzylidene) -2-phenyl-4H-oxazol-5-one (AZA13). Using the multiparametric strategies of KamletAbboud-Taft (KAT) and Catalán, it was verified that the parameter that has the greatest influence on the solvatocromic behavior was the polarizability. / Este trabalho relata inicialmente o emprego de dois derivados oxazolônicos, 4-(4-(N,N)-dimetilaminobenzilideno)-2-fenil-1,3-oxazol-5(4H)-ona (AZA2) e 4-(4-nitrobenzilideno)-2-fenil-1,3-oxazol-5(4H)-ona (AZA8) como sondas fluorescentes na detecção de histamina. Entretanto esses compostos apresentaram baixa reatividade do núcleo oxazolônico frente ao analito em condições amenas. Logo, aproveitando-se das propriedades absortivas e emissivas dos derivados oxazolônicos, pensou-se na utilização destes derivados como sondas solvatocrômicas na investigação de solventes puros. Assim, além dos derivados já mencionados (AZA2 e AZA8), foram testados também mais dois outros derivados para esta finalidade, o 4- (4-metoxi-benzilideno) -2-fenil-1,3oxazol-5 (4H) –ona (AZA10) e 4- (3-clorobenzilideno) -2-fenil-4H-oxazol-5-ona (AZA13). Utilizando-se das estratégias multiparamétricas de KamletAbboud-Taft (KAT) e Catalán, verificou-se que o parâmetro que possui maior influência no comportamento solvatocrômico foi a polarizabilidade.
9

Danos de radiacao em componentes quimicos de detectores cintiladores organicos

FERNANDES NETO, JOSE M. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:48:42Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:59:58Z (GMT). No. of bitstreams: 1 09304.pdf: 9069440 bytes, checksum: 9b629151d743bf36f1cfe4b92c5a25b2 (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
10

Otimizacao do metodo de polimerizacao para producao de detectores plasticos cintiladores de grandes dimensoes

COSTA, NELSON P. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:43:46Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:09:55Z (GMT). No. of bitstreams: 1 06650.pdf: 4804396 bytes, checksum: 4f29fb57f44398a132f7549c46a4c525 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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