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.
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Showing 1 to 13 of 13 for “"azine"”.
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Azine in der Koordinationssphäre von Vanadocenderivaten unterschiedlicher Oxidationsstufen
… die selektive, reduktive N-Hydrierung einer Bisazineinheit in Hexaazatrinaphthylenderivaten durch Decamethylvanadocen(II) gelungen.
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Synthesis and electrochemistry of photoantimicrobial agents based on the azine chromophore
… oxidation of the appropriate precursor phenothiazines by iodine and were characterised for synthetic purposes by infrared spectroscopy, nuclear magnetic resonance, ultravioletvisible spectroscopy, mass spectrometry and thin layer chromatographic techniques. The ability of the photosensitiser to …
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Capacidad coordinante de ligandos derivados de 2-tiazolina e hidrazona frente a iones metálicos de transición
… acetyl-2-thiazoline)-N¿-(2-thiazolidin-2-one) azine (ATHTd), (2-acetyl-2-thiazoline) thiosemicarbazone (HATtsc), (2-acetyl-2-thiazoline) semicarbazone (ATsc) and (2-acetyl-2- thiazoline) acetylhidrazone (ATHAc) and of their metallic complexes with Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) have …
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The synthesis and reactivity of 6- and 8-azaindolizines.
… with their formyl derivatives - 5-azacycl[3,2,2]azine structures, which were also synthesised by 1,3-dipolar addition reactions betvieen dimethyl acetylenedicarboxylate and 6- or 8- azaindolizines. An examination of the 'H NMR spectra of 6- and 8- azaindolizines in trifluoroacetic acid showed …
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Aza-analogues of distyrylbenzene (DSB) synthesis, structures, and properties of 1,4-phenylenediamine bisimines (PDABI)
… dipole aligned crystal with acetophenone azines marks our first contributions to this database of materials, and we look to increase that number. The design principal that guides our material designs encompasses three major themes: acceptor and donor groups that create a molecular dipole, …
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Synthesis, Chemical Behavior, and Spectroscopic and Theoretical Probes of Cyamelurine and Related Compounds
Cyamelurine, also known as tri-s-triazine or 1,3,4,6,7,9,9b-heptaazaphenalene, has been the subject of several theoretical investigations which have predicted its physical and chemical properties, color, fluorescence, and degree of chemical stability; however, the compound was hitherto unknown. …
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Palladium catalyzed carbon-carbon bond formation at carbon-hydrogen bonds
… of a novel cross-coupling reaction of azine N-oxides with aryl halides. Greater mechanistic understanding, made possible through the use of computational tools, was crucial in extending this methodology to azole N-oxides. Finally, the development of novel direct functionalization …
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Transition Metal-Catalyzed Preparation and Functionalization of Nitrogen-Containing Heterocycles
… that performed the cross-coupling event on the azine ring of azaindole, and one that arylated the azole ring. In the second section, we extend our work on a cross-coupling technique catalyzed by rhodium, wherein a five-membered azole ring is constructed oxidatively by reaction between an anilide …
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Application of natural dyes in textile industry and the treatment of dye solutions using electrolytic techniques
… that between 84 to 100% of each dye of phenothiazine was removed during 60 minutes of electrolysis. The percentage removals for the phenothiazine dyes followed the following decreasing order: (MG ≈ MV) > (DMMB ≈ AA) > (AB ≈ AC ≈ NMB) > TBO > TH. However, the azine, acridine and oxazine dyes …
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Development and Evolution of ‘Ene’-Reductases for Selective Radical Chemistry
… access to enantioenriched structures bearing azine motifs which are desirable for the synthesis of pharmaceutically-relevant molecules. Furthermore, we describe efforts to evolve an ‘ene’-reductase that can accept pyridinemethanols, tuning the enzyme environment to enable cleavage of strong …
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Modular Approaches for the Synthesis of α-Azinyl Amines and Related Scaffolds
The work in this thesis comprises three projects all with a central focus on the synthesis of α-alkyl 2-azinyl amines and related scaffolds in a modular fashion. The first project describes the development of an operationally straightforward and general multicomponent carbonyl azinylative amination …