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The Chemistry Of Sulfonyl Fluorides: Sf5 And/Or So2f Containing Compounds As Precursors To Sulfonic Acids, Robin Joyce Terjeson

Dissertations and Theses

Sulfonyl fluoride systems and their derivatives, RS0₂F, where R represents hydrocarbon/fluorocarbon moieties continue to be of considerable interest. The incorporation of the sulfonyl fluoride group (S0₂F) into molecular systems can lead to compounds that are useful as ion-exchange resins, surface active agents, fuel cell electrolytes, and strong sulfonic acids/salts.

Interest in preparing SF₅ containing sulfonyl fluorides led to the synthesis of the ᵝ-sultone, SF₅CHCF₂0S0₂, and its rearranged product. Hydrolysis of the sultone gave SF₅CH₂S0₂F which led to the sulfonic acid and salt, SF …

Cathodic Depositions Of The Compound Semiconductor Cadmium Sulfide, Jeffrey B. Richard

Dissertations and Theses

Thin layer deposits of cadmium sulfide (CdS) for photovoltaic purposes can be made by cathodic deposition from a nonaqueous solution. There were numerous parameters that were controlled in this electro-deposition. Several of these parameters, including temperature, current density, reactant concentrations and impurity level doping, were studied and optimized. The mechanism of this deposition process is not fully understood, mainly due to the complex chemistry of sulfur. Part of this complexity is the presence of S(,6) and S(,7) along with the major component of S(,8) in sulfur solutions. At 90(DEGREES), these minor species constitute 2% of the total sulfur. Electrochemical studies …

On The Mechanism Of The Diels-Alder Reaction--Dimerization Of Trans-Phenylbutadiene, Michael Ward Mcnicholas

Dissertations and Theses

The Diels-Alder dimerization of trans-1-substituted butadienes is expected to yield a cyclohexene adduct with the substituents in the 3 and 4 positions cis to one another. This prediction is based on past observations of other Diels-Alder additions. The cis-isomer is the only one consistent with a two-stage mechanism proposed by Woodward and Katz.

In the case of trans-phenylbutadiene, the expected adduct is cis-3-phenyl 1-4-(trans-styry1) cyclohexene. Alder, Haydn and Vogt, however, reported that the corresponding trans-isomer is the dimerization product. There is reason to believe that the observation of the trans-isomer may have been the result of product isomerization during purification. …

Cyclization Studies Involving The Synthesis Of 5-Substituted-1-Naphthol, Clark Keelock Chow

Dissertations and Theses

The γ-o-substituted-phenylparaconic acids were prepared by a method patterned after that of Fuson. These paraconic acids were prepared in good yield. A re-investigation of the Perkin and Fittig methods of preparing γ-phenylisocrotonic acid was carried out without success.

The synthesis of γ-o-halophenylisocrotonic acids by thermal, and catalyzed decarboxylation of γ-o-halophenylparaconic acid, have been carried out in good yield. An effective catalyst, optimum temperature and reaction period of decarboxylation of the γ-o-halophenylparaconic acids have been determined. Infrared absorptions have characterized the γ-o-halophenylisocrotonic acids formed to be in the stable trans form. …