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 7 of 7 for “"Fused Rings"”.
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Study of Polyaromatic Hydrocarbons Emitted in the Fly Ash from Coal Combustion in a Fluidized Bed Combuster
… efficiency decreases, larger PAHs (four to five fused rings) are detected in the fly ash; whereas, during high efficiency combustion, smaller PAHs (two to three fused rings) are more likely to be detected.
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Chemistry of fused-ring iridabenzenes
… this class. However, examples where additional fused rings are attached to the metallabenzene core are scarce and the chemistry of these `fused-ring metallabenzenes' is only just beginning to be explored. The work described herein sought to contribute to our understanding of these intriguing …
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Preparation of benzoenyne -allenes, enyne -isocyanates and enyne -carbodiimides and their applications in the synthesis of polycyclic aromatic hydrocarbons and heterocycles
… polycyclic aromatic hydrocarbons. Several indeno-fused 4,5-diarylphenanrenes were synthesized by a consecutive C2-C6 cyclization of a symmetrical benzoenyne-allene. The formal Diels-Alder reaction involving a C2-C6 cyclization reaction followed by a radical-radical coupling reaction of the …
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Synthesis of Sulfonyl Fluorides and the Total Synthesis of the Rhodocorane Natural Products
… natural products possess a range of spirocyclic, fused rings, and highly oxygenated systems that allow for structurally diverse and complex molecules. We propose a common synthetic intermediate that can access a majority of this family through the addition of other commercially available …
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Synthesis of o-isotoluenes, o-quinodimethanes, and benzoenynyl carbodiimides and their cyclizations to polycyclic and heterocyclic compounds
… indoloquinoline units incorporated in the seven fused rings.;The synthetic pathway to the 6H-indolo[2,3- b]quinolines was successfully adopted for preparation of the 5-aza anologues of ellipticine, a naturally occuring alkaloid having potent anti-cancer properties. This approach, which constructs …
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Chiral Separations on HPLC Derivatized Polysaccharide CSPs: Temperature, Mobile Phase and Chiral Recognition Mechanism Studies
… by racemic 2-methylarylpropionic acids with fused rings that were favorably separated at low temperatures. The other mechanism was associated with positive values for the enthalpy and entropy differences of the association between enantiomers and CSP, and the enantioseparation is said to be …
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Synthesis and Characterization of Manganese Pyridazyl Complexes
<p>Heterocyclic’s and their fused-ring derivatives have been of interest for their use in electronic materials due to their ease of production, synthetic versatility, and low cost compared to traditional inorganic materials like silicon. Pyridazines have been found to be useful in catalysis gas …