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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 20 of 1640 for “"aromatic"”.
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The Reaction of Cyanide Ion With Aromatic Nitriles and Aromatic Heterocyclic Compounds
Made available in DSpace on 2014-12-10T23:01:27Z (GMT). No. of bitstreams: 1 7309901.pdf: 2768526 bytes, checksum: 7e9e5fe298ad35b10b884a32a0da25b7 (MD5) Previous issue date: 1972
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Nucleophilic aromatic substitution of metallabenzenes
… a new benzenelike reaction - nucleophilic aromatic substitution of hydrogen (SN H) (Scheme 0-1). In this process, the nucleophile (Nu) first attacks the cationic metallabenzene (A) at the γ position to the neutral metallacyclohexadiene compound (B). Oxidation with an external oxidant [O] …
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Modulation of the Aromatic-Aromatic Stacked Organizations of Phenylene Ethynylene Macrocycles and Oligomers Through Structure Modification
… ethynylene architectures can influence their aromatic-aromatic stacking propensities, and that the nature of these architectures can be modulated by the design of appropriate hetero-sequences.
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Reinventing Aromatic Substitution: A Novel Look
<p>Electrophilic aromatic substitution (EAS) and directed <em>ortho</em>-metalation (DoM) involve the direct substitution of an arene hydrogen. A major drawback involving EAS is the necessity for harsh forcing conditions for the reaction to proceed. Catalysts such as Lewis acids FeBr<sub>3</sub> …
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Aromatic acetals : their synthesis and alkylation
… chloride, calcium chloride, ferric chloride, aromatic sulfonic acids, and other. There was no data available comparing the sulfonic acids with the inorganic salts and mineral acids. For that reason one of the subsidiary problems of this investigation was such a comparison.</p><p>In order to …
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Reactions of quinones with aromatic ethers.
The reactions between quinones and aromatic compounds in the presence of acids are surveyed; and a summary of the methods used for preparing triphenylenes is outlined. Mono- and di-arylquinones have been prepared by the arylation of benzoquinones with diazotised 3,4-dimethoxyaniline (Meerwein …
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Synthesis of aromatic peptide nucleic acids
The synthesis of two analogues of Aromatic Peptide Nucleic Acids (APNAs) monomers was successfully achieved. These Peptide Nucleic Acid analogues could be used as building blocks for the synthesis of oligomers with the DNA and RNA recognition properties of PNAs in addition to a more hydrophobic …
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Oxidation of Ring-A Aromatic Steroids
… with a study of the oxidation of ring-A aromatic steroids using either chromium trioxide-aqueous sulphuric acid-acetone or chromium trioxide-aqueous acetic acid mixtures. It was found that chromic acid oxidation of ring-A aromatic steroids substituted with a strong electron-donating …
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Electrochemical Studies of Aromatic Azo Compounds
Made available in DSpace on 2014-12-09T17:35:31Z (GMT). No. of bitstreams: 1 6612302.pdf: 4462329 bytes, checksum: fe073ca90d76f7eda795f3404b65a192 (MD5) Previous issue date: 1966
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An Electrochemical Study of Aromatic Nitrocompounds
Made available in DSpace on 2014-12-05T19:37:56Z (GMT). No. of bitstreams: 1 6202892.pdf: 3350113 bytes, checksum: cc0e6c0061c52e945f6d6f03b9f1838b (MD5) Previous issue date: 1962
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Electrochemical Studies of Reducible Aromatic Compounds
Made available in DSpace on 2014-12-05T19:38:19Z (GMT). No. of bitstreams: 1 6305155.pdf: 3594503 bytes, checksum: c5bfbe3c610459934f8e9d03581a87dd (MD5) Previous issue date: 1963
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Determination of orientation in aromatic polyesters
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1998.
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Understanding polycyclic aromatic hydrocarbon degradation by soil microbial communites: the concentration and distribution of aromatic dioxygenase genes
… The following thesis therefore compares two aromatic dioxygenase genes, nidA and nahAc, which confer the ability for the bacteria carrying the genes to metabolize polycyclic aromatic hydrocarbons (PAHs), persistent pollutant byproducts of coal coking. The deposition of PAHs influences the …
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Gas-phase Ion Chemistry of Hydroxy and Amino-substituted Interstellar Polycyclic Aromatic Hydrocarbons and Protonated Polycyclic Aromatic Hydrocarbons
… of hydroxyl- and amino-substituted polycyclic aromatic hydrocarbons (PAHs) and their protonated counterparts were studied using mass spectrometry. Ions were generated using an electron ionization (EI) source and the unimolecular chemistry of metastable ions was studied by performing …
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Design, Synthesis, & Biological Evaluation of Novel Het-Aromatic/Aromatic Analogs for the Treatment of HIV, Cancer, & Cognitive Dysfunctions
<p>Cyclophilin A are a class of peptidyl-prolyl isomerases that catalyzes isomerization of the proline residue within a protein. Cyclophilin A plays an instrumental role in the pathogenesis of HIV and HCV virus. Using structure-based drug we designed and synthesized small molecule inhibitors of …
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SPECTROSCOPIC STUDIES OF SOME AROMATIC DECOMPOSITION INTERMEDIATES
A number of aromatic radicals have been produced and identified. A re-examination has been made of spectra from discharges through toluene and toluene-alpha-d, In each case a vibrational frequency analysis has been carried out on the bands: to the violet of the (0,0) band. The fundamental …
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