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The formation of aromatic hydrocarbons at high temperatures .Jolad, Shivand Dundappa January 1966 (has links)
Typescript / 212 leaves & 1 reprint / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Organic Chemistry, 1966
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The formation of aromatic hydrocarbons at high temperatures / by Ronald W.L. Kimber.Kimber, Ronald Walter Lincolne January 1959 (has links)
Typewritten / Copies of author's previously published articles inserted. / 159 leaves : ill. ; 26 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Organic Chemistry, 1960
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The formation of aromatic hydrocarbons at high temperatures .Jolad, Shivand Dundappa. January 1966 (has links) (PDF)
Thesis (Ph.D.) -- University of Adelaide, Dept. of Organic Chemistry, 1966. / Typescript.
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The formation of aromatic hydrocarbons at high temperatures .Kimber, Ronald Walter Lincolne. January 1959 (has links) (PDF)
Thesis (Ph.D.)--University of Adelaide, Dept. of Organic Chemistry, 1960. / Typewritten. Copies of author's previously published articles inserted.
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Attempts to generate a homoaromatic carbene and bisnorcaradieneParker, Richard Henry, January 1979 (has links)
Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Includes bibliographical references (leaves 82-85).
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Radical and related reactions of aromatic speciesTruska, Scott 30 May 1996 (has links)
A three part study involving aspects of radical properties of various
aromatic species was accomplished.
Experiments to ascertain the importance of geometric and electronic
effects on the intramolecular transfer of a pi-complexed radical to a terminal double bond
was performed. Several 4-aryl-1-butenes were reacted in competition with 1-undecene
with a variety of radical precursors at 70��C. The reactions were studied in both
complexing and noncomplexing solvents. Most of the relative rates varied little from
unity and no dependence on solvent was observed.
A series of 21 phenacylarenes was subjected to mass spectrometry. The
fragmentation process leading to arylmethyl radicals and benzoyl cations was measured
by calculating the ratios of parent ion to benzoyl cation signal strength. In the case of the
eleven homoaromatic compounds little overall correlation of these values to traditionally
accepted arylmethyl radical stabilities was found. The degree of fragmentation for
isomers of the same compound were found to be explicable in term of arylmethyl radical
stabilities. Degrees of fragmentation of some compounds could be rationalized in terms
of the bond order of the bond being broken, as calculated by AM1 methods. The ten
heteroaromatic compounds showed little correlation of fragmentation with bond order.
The degree of fragmentation was found to be dependent on many different variables of
the individual molecules. No correlation with any one factor could be found.
The relative rates of benzylic hydrogen atom abstraction from a series of
substituted toluenes and cumenes under conditions of bromination by diethyl
bromomalonate were determined at 70��C. A range of reactivity of 21.7 and 10.5 was
found for the toluenes and cumenes respectively. The relative rates were found to
correlate best with Hammett sigma plus constants. Hammett values of -0.89 and -0.73
were calculated for the substituted toluenes and cumenes. Reactivities for several alkyl
benzenes having different steric requirements at the reaction site were also studied. The
relative rates for these compounds indicate a relatively large radical to be the atom
abstracting agent. The results of the Hammett correlations combined with the studies
involving the steric properties of the abstracting radical suggest that diethyl malonyl
radical is the hydrogen atom abstracting species. / Graduation date: 1997
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Adsorption, reaction and interfacial electronic structures of aromatic molecules on single crystal surfacesWei, Wei, White, John M., January 2005 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: John M. White. Vita. Includes bibliographical references.
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Neutral and heavy nucleophiles in aromatic nucleophilic substitutionsYeung, Hin-wing, 楊顯榮 January 1967 (has links)
toc / Chemistry / Master / Master of Science
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The SN2 mechanism in aromatic nucleophilic substitution黃嘉穎, Wong, Ka-wing. January 1963 (has links)
published_or_final_version / Chemistry / Master / Master of Science
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An analytical and sensory evaluation of the aroma volatiles of Tuber gibbosumMarin, Anna B. 19 August 1985 (has links)
The aroma of Tuber gibbosum, a native Oregon truffle, was
characterized using two distinct techniques. Volatile aroma
constituents were identified by chemical analysis, and sensory
characteristics were determined by examining response of the
general populace to the truffle aroma.
Truffle samples from four maturity ranges, as determined
by microscopic examination of each specimen for spore maturity,
were compared for amounts and types of aroma volatiles present.
Aroma volatiles of frozen specimens of T. gibbosum were sampled
using a headspace concentration technique. Volatile compounds
were analyzed by gas chromatography/mass spectrometry/data system
(GC/MS/DS) and the total volatile profile was found to contain up
to 20 compounds, depending on sample treatment and maturity.
Seven compounds were found to be the major aroma constituents and
were selected for further investigation. These 7 compounds were
identified from their mass spectra and the identities
substantiated by determining their Kovats retention indices. Amounts of volatile compounds present in each sample were
determined by capillary gas chromatographic (GO analysis using an
internal standard of n-tridecane for quantitative determinations.
The major aroma constituent for all the samples was oct-l-en-3-ol,
representing about 50% of the total aroma profile. The other 7
major components were 8- and 6-carbon alchols, ketones and
aldehydes.
Quantitative data for all samples and components were
analyzed statistically. A descriptive model for truffle maturity
was derived based on the amounts of 5 of the 7 compounds, and the
sum of the amounts of the 7 major constituents.
A comparison of volatiles from ascorbic acid treated and
untreated control truffle samples indicated an apparent reduction
in the amounts of several compounds.
The examination of public response to the aroma of T.
gibbosum was conducted as part of a display on truffles at the
Oregon Mycological Society Mushroom Show. The aroma of this
truffle, and three other native Oregon truffles were rated for
desirability and preference. Results indicate T. gibbosum was not
the favored sample, but was liked by about 2/3 of the population.
Comparison of responses by males and females showed no differences
for individuals liking the truffle aromas. However, females rated
the truffle aromas of 3 of the 4 species as more unpleasant than
did males. / Graduation date: 1986
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