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Showing 1 to 15 of 15 for “"pyridazines"”.
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Thiophene and Derivatives for Use in Pyridazines and Thiapentalenes
<p>This thesis introduces the idea of Band Theory and how it can be used to describe a solid-state materials ability to carry an electrical charge. Next, this thesis defines what makes a material a conductor, semiconductor, or insulator. Semiconductors are attracting interest in chemistry, as well …
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On-Metal Synthesis of Some Aryl Substituted Rhenium η<sup>5</sup> Cyclopenta[C] Pyridazyl Complexes
… We are interested in synthesizing organometallic pyridazines and rhenium pyridazyl complexes for polymer research. SeveraI5,6-fused ring pyridazines (1,2-CsH3(CRNH)(CRN) have been synthesized and characterized. Additionally, pyridazyl complexes of rhenium were synthesized in three steps beginning …
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Novel Materials for Use in Homeland Security Research
<p>Organometallic pyridazines and compounds derived from them have been of interest in polymer research due to their atypical environmental stability (as compared to other non-aromatic organic semiconductors) as well as their conductivity. The off-metal synthesis and characterization of several …
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Off-Metal Synthesis of Some Aryl Substituted Rhenium n5-Cyclopenta [C] Pyridazyl Complexes
… interests focus upon the potential role of pyridazines in next generation electronic devices that utilize organics as the semiconducting material. Pyridazines, 6-membered aromatic rings with two adjacent nitrogens, are promising candidates for a variety of materials and commercial …
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Synthesis and Characterization of some Thallium Salt Complexes
… of chloro-phenyl based fulvenes, 5,6 fused ring pyridazines, and thallium Cp salts have successfully been synthesized. Research is currently underway to synthesize rhenium and manganese pyridazines through transmetalation of the thallium salts. The off-metal route of synthesis was followed as …
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Synthesis and Structure of a Substituted Pyridazine
<p>Pyridazines are heterocyclic compounds with an N-N bond in their ring structure. Heterocyclic aromatic compounds are of great interest as a result of their novel properties and commercial applications. Our current research is focused on the potential role of pyridazines in next generation …
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The preparation of heterocycles by [2+2+2] cyclization and inverse electron demand Dels-Alder reactions of arynes with 1,2,4-triazines
… to the preparation of tetrahydro-naphthyridines. Pyridazines could be generated if the cyclization could be accomplished with two nitriles and an alkyne, which would be a novel way to synthesize 1,2-diazines through the formation of the N-N bond. To this end, metal-catalyzed intramolecular [2 + 2 …
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Synthesis and Characterization of Manganese Pyridazyl Complexes
… to traditional inorganic materials like silicon. Pyridazines have been found to be useful in catalysis gas storage, polymeric sensors and biological mimetics. When a transition-metal is fused into a synthesized pyridazine, unique properties such as conductivity and optics are allowed. In this …
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Synthesis of Rhenium and Manganese Pyridazoal Complexes
<p>Pyridazines are a heterocyclic aromatic compound containing a characteristic N-N bond that are utilized in many fields, including medicine and electronics. It is this latter field that Dr. Snyder's research group is focused upon. Organometallic compounds are a better conducting material than the …
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On Metal synthesis of Some Substituted Rhenium and Manganese Complexes
… upon the potential role of metal ligand bound pyridazines as the next generation of electronic devices that utilize the metal ligands bound to organics as the semiconducting material. Pyridazine is a 6-membered aromatic ring with two adjacent nitrogen atoms. These are promising candidates for a …
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Molecular design of conjugated polymers for the control of conformation, electronics and self-assembly
… of large quantities of iptycene-derived bipyridazines and biphthalazines, and the controlled synthesis of well-defined oligomers up to sexipyridazine. Crystallographic, spectroscopic and computational evidence indicate that in these analogues, hindrance at the ortho position is relaxed …
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Novel Metal Amido-Complexes – Syntheses, Reactivity and Asymmetric Catalysis
… results regarding diamine-bridged imidazo[1,5-b]pyridazines have shown, that the deprotonated compounds are suitable for the stabilization of early as well as late transition metal complexes. Since only dinuclear group 9 metal complexes could be obtained, one objective of this work was to enable …
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Studies in Selective C-C Bond Formation via Borylation and Dehydrogenation
… room temperature regioselective alkylation of pyridazines by (iodomethyl)boronic acid pinacol ester in the presence of trifluoroacetic acid in up to 70% yield (Chapter 1.3). We see that this reaction proceeds upon variation of either the halide identity or the length of the alkyl fragment, …
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Novel P,N-Ligand Stabilized Transition Metal Complexes as Efficient Catalysts for Organic Syntheses
… substrates such as pyridimidines, pyrazines, pyridazines and even pyridines are perfectly tolerated.