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 5 of 5 for “"nitrogen heterocycle"”.
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New explorations in visible-light mediated energy and single electron transfer for nitrogen heterocycle synthesis
… for the synthesis of biologically important nitrogen containing heterocycles, investigating both single electron transfer and energy transfer methods. The results section of this thesis is presented in three chapters, each focusing on a different ring size, namely 4, 5 and 6 membered nitrogen …
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Keteneylidenetriphenylphosphorane as a 'C2O building block' in the synthesis of highly functionalised tetramic and tetronic acids
… substituents at the 3- and 5-positions of the nitrogen heterocycle. A general method for the preparation of highly functionalised furan-2-ones from simple alpha-hydroxy esters was also developed. Progress has been made in the synthesis of N-substituted pyrrol-2-ones where simple amide esters …
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Spectroscopic characterization and photochemistry of nitrogen-containing molecules relevant to Titan's atmosphere
… transformation of the isonitrile group to other nitrogen-based functionalities.<em>p</em>DIB was found to have a excitation spectrum dominated by Herzberg-Teller vibronic coupling to a nearby second electronic excited state, and the S<sub>0</sub>-S<sub>1</sub>origin was found to be weak, due to …
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Spectroscopic and functional models for Hmd hydrogenase
… through the carboxylate oxygen and pyridine nitrogen. The hydroxyl group exhibits strong intramolecular hydrogen-bonding and also stabilizes water binding with ionization of Cl- in water. Hydrogen transfer reactions of secondary alcohols mediated by Cp*IrCl(cmhpH) were also examined. Initial …
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Synthesis and X-ray Diffraction Structure of 8,9-Dichloropyrrolo[1,2-a]perimidin-10-one
Treatment of dichloromaleic anhydride and 1,8-diaminonaphthalene in either benzene or toluene under refluxing conditions gives low yields of the new heterocyclic compound 8,9-dichloropyrrolo[1,2-a]perimidin-10-one. This product has been isolated and characterized in solution by NMR, IR, and UV/vis …