Physical Sciences and Mathematics Commons^™

The Synthesis And Pharmacologic Activity Of Some Bis-(2-Aminoethyl)-Benzenes, Ching Chen Tung

Doctoral Dissertations

Introduction: The isolation of epinephrine from the medulla of the suprarenal gland and the discovery of its amazing therapeutic effects have stimulated intensive research on the synthesis of compounds possessing the basic skeleton of 2-aminoethyl-benzene. The investigation in the past forty years have culminated in the preparation of a large number of this type of amine which are pharmacologically classified as "sympatho-mimetic" or "pressor" agents because they generally act on the sympathetic nervous system and cause in increase of blood pressure. However, the 2-aminoethylbenzene derivatives most thoroughly studied have been those whose molecules possessed only one aminoethyl side chain per …

Analytical Data (1951), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Enrichment Of Tin Activity Through The Szilard-Chalmers Separation, Herta W. Spano

Chemistry and Chemical Biology ETDs

It was the purpose of this investigation to utilize the Szilard-Chalmers reaction in order to prepare tin solutions of high specific activity.

Tetraphenyl tin was chosen for the target compound. It is a white, crystalline solid of excellent thermal stability. No data have been reported in the literature on the rate of exchange between inorganic forms of tin and tetraphenyl tin but it seemed highly probable that this exchange would be very slow. Tetraphenyl tin is soluble in various organic solvents but insoluble in water, and this suggested solvent extraction as a possible means of separation of the activated tin …

Solubility Product Constants Of The Metallic Sulfides, Marvin Bernard Gordon

Theses and Dissertations

A survey of the chemical literature revealed a lack of agreement in the values reported by various investigators for the solubility product constants of the metallic sulfides. The object of this thesis was to obtain a reliable set of solubility product constant values for the metallic sulfides by means of thermodynamic calculations. Of considerable importance in calculating the values of the solubility product constants of the metallic sulfides is the value of the standard free energy of formation of the sulfide ion. A critical review of the values that have been reported by various investigators for this constant , including …

2-Pyrrolidinoethyl Esters Of Para Alkoxybenzoic And Para Alkox Alkoxycinnamic Acids, Michael James Fletcher

Master's Theses

One of the most important groups of local anesthetics is the class of alkyl and dialkylaminoalkyl esters of aromatic acids. Of these compounds, the diethylaminoethyl esters are particularly valuable.

It is obvious that pyrrolidine is merely a modified form of diethylamine. The purpose of this work is to learn the effect of substituting the N-pyrrolidyl nucleus for the diethyl amino nucleus in various esters of the local anesthetic type.

Derivatives Of M-Xylene, Henry J. Muller

Chemistry and Chemical Biology ETDs

Since m-xylene of 95-98% purity has recently become available from petroleum, this is an appropriate time to prepare an examine its derivatives. Isophtalic and m-toluic acids can be prepared from the hydrocarbon. The purpose of this work was to prepare imidazolines from these acids

Phase Behavior Of Sodium Stearate In Anhydrous Cyclohexane, Walter Edward Reid Jr.

Master's Theses

Soap solutions, aqueous and non-aqueous, are characteristic in that they firm colloidal systems at certain concentrations, the properties of which are influenced by temperature and pressure. Application of the Gibbs phase rule to such systems makes possible the location of the various phases of a particular system and hence enables phase diagrams to be constructed. For systems of soap-hydrocarbons such as are found in fuels, beauty preparations, greases, medical preparations, etc., a phase diagram would show very readily the most satisfactory composition for the conditions desired.

A Study Of The Mechanism Of The Reaction Between Styrene And Tung Oil, Rowan Joseph Coyle

Honors Theses

It is the purpose of this thesis to study the possible mechanisms by which styrene may react with tung oil. To this end, styrene is reacted with tung oil, using a peroxide catalyst, the reaction product is separated into its components, and a preliminary analysis of these components is made, in an attempt to determine whether the reaction occurs through a Diels-Alder or a co-polymerization type mechanism.

Studies On Some Reactions Of Portland Cement, Edward Shannon Clark

Honors Theses

Studies are made on 1. The mechanism of cement setting, 2. Cement – sawdust mixtures, 3. The effect of soluble compounds on cement, 4. Cement – latex mixtures and 5. Cement – plastic compositions.

Electrodeposition Apparatus Employing A Controlled Cathode Potential, Carl Arthur Hirt

Honors Theses

The present work was undertaken with the idea of building a simple electrodeposition apparatus employing a controlled cathode potential so that quantitative separations and determinations of various cations could be made. When finished the apparatus was to be employed in the investigation of electrochemical problems. However, so many difficulties arose in the construction of the apparatus that there was not time available for this latter work.

Catalytic Vapor Phase Ethylation Of Phenol, George Wendell Putman

Honors Theses

The object of this research was to study the reaction between ethyl alcohol and phenol and to try to identify some of the products. Further study of the effect of catalyst on the reaction was also undertaken.

Inhibition Of The Thermal Polymerization Of Styrene, Herman Ernst Opitz

Honors Theses

It is the purpose of this thesis to further study the inhibition of the thermal polymerization of styrene along the same lines as Cohen, and wherever necessary to improve and correct his work.

The Effect Of Electrolytes On The Viscosity Of Protein Solutions, Thomas Anthony White

Honors Theses

This project was undertaken to study the Hofmeister series and Loeb's contention that it is incorrect. The protein chosen for study was gelatin. The three salts used were: sodium chloride, sodium acetate and sodium nitrate.

The Ultraviolet Absorption Of Some Nitrogen Heterocycles, Benzotriazole, Benzimidazole, Indazole, Indole, John Edward Fagel Jr.

Honors Theses

The ultraviolet absorption spectra of benzotriazole, 5, (6)-chloro-benzotriazole, benzimidazole, indazole, and indole have been determined in aqueous solutions of varying acidity in the region 210-300 mmu. An attempt has been made to correlate the absorption spectra of these compounds with their molecular structure. The acidic dissociation constants of several of the compounds have been determined graphically from the absorption data.

The Reliquefaction Of Zirconia Gels, Hubert Joseph Keily

Honors Theses

The initial reliquefaction of zirconia gels at room temperatures seems to be unique. The following study was made to provide a further description of this phenomenon and to attempt to suggest the nature of it.

The Chemical Characteristics Of 8.0-Day I^131 Produced By The Beta Decay Of 25-Minute Te^131 In Organic Liquids, Francis J. Keneshea Jr.

Chemistry and Chemical Biology ETDs

In 1934 Szilard and Chalmers found that a large fraction of the radioactive iodine produced in the thermal neutron irradiation of ethyl iodide could be extracted from the irradiated material. The procedure followed was to add a trace of carrier iodine to the irradiated liquid, extract the iodine with an aqueous solution of a reducing agent and precipitate the iodide as silver iodide. The silver iodide precipitate obtained in this manner contained a large fraction of the iodine activity (25-minute I¹²⁸), at a high specific activity. Since ethyl iodide is not soluble in water and hence is not …

The Kinetics Of The Exchange Between Benzyl Iodide And Iodide Ion, Paul Stillson

Chemistry and Chemical Biology ETDs

In the investigation to be described here, the exchange reaction was carried out in methyl alcohol, ethyl alcohol, and acetone-alcohol mixtures. Radioactive I¹³¹ was used as a tracer throughout the investigation. A mechanism was postulated for this reaction in each solvent and activation energies were determined.

The Factors Influencing The Rate Of Polymerization In The Formation Of Propylene Phthalate, Guenter R. Ackermann

Chemistry Honors Papers

This 16 page thesis examines several methods to determine the rate of reaction of propylene glycol with phthalic anhydride.

Rate Of Reaction And Order Of The Esterification Of Propylene Glycol With Acetic Acid, Thrygve R. Meeker

Chemistry Honors Papers

This 18 page thesis examines the determination of order and specific reaction rate of esterification of propylene glycol with acetic acid at forty degrees centigrade.

Stability And Concentration Effects In The Use Of Siloxene As A Chemiluminescent Indicator In Redox Titrations, William F. Burkhardt

Chemistry Honors Papers

This 22 page thesis attempts to determine the limitations of, and to extend the applicability of siloxene as a chemiluminescent indicator in redox titrations.

The Saponification And Chlorine Determination Of Alkyl Chlorobenzoates To Determine Their Identity And Purity, Joan Bardele

Bachelors’ Theses

Many of the present reagents tor the preparation of alco­hol derivatives are deficient in at least one respect. A preparative investigation was made by Mr. Robert Johnson of alkyl chlorobenzoates, by substitution of benzoyl chlorides on aloohols, since various benzoyl chlorides are now available com­mercially. Mr. Johnson presented a thesis on the "Preparation of Alkyl Chlorobenzoates And Their Application As Alcohol Derivatives". As a result or his work thirty eaters previously not reported in literature were prepared and their melting points and boiling points and refractive indices determined.

In order to give an indication of the identity and purity ot …

Investigations Into The Synthesis Of Indazole, Albin Joseph Rzeszotarski

Honors Theses

These investigations were undertaken in order to prepare a suitable quantity of pure indazole for further research by other student. A secondary and equally important purpose of the work was to study the products of the reaction carried out and their relative abundance under varying conditions of pH. A suitable electronic mechanism for the reaction was to be proposed.

Indazole, at present, has no commercial applications, and is not produced (to the author's knowledge) by any large chemical concern. The interest in this compound is chiefly due to the several structural formulae which have been assigned to it and which …

A Study Of The Structures Of Some Compounds Of The Symmetrical Triazine Series By Means Of Their Ultraviolet Spectra, Robert William Schaefer

Honors Theses

The purpose of this work is to investigate the ultraviolet absorption spectra of symmetrical triazines with the outlook of correlating, on a theoretical basis, the date obtained with molecular structure.

Diffusion Through A Membrane, Marvin E. Wyman

Journal of the Minnesota Academy of Science

No abstract provided.

Carbon-Fluorine Chemistry, H. G. Bryce

Journal of the Minnesota Academy of Science

No abstract provided.

The Inductive Compared With The Deductive Approach To Teaching Secondary School Chemistry, Clarence H. Boeck

Journal of the Minnesota Academy of Science

No abstract provided.

Internal Pressure And Related Physical Properties, Eugene Ceperley

Bachelors’ Theses

What is internal pressure? That question has never been answered in a satisfactory manner. Probably the best answer is the simple statement that it is a measure of the attraction between molecules. While this is true it gives no indication of what causes the attractive force or of the effects which this attraction has on a substance.

In this thesis an attempt will be made to use this vague definition of internal pressure to find a method of calculating internal pressure using data for various physical properties. The liquid state of various substances will be considered. A relationship which holds …

A Kinetic Study Of The Autocatalytic Reaction Between Aniline And Benzoic-Anhydride In A Non-Polar Solvent., Jack Warren Knight

LSU Historical Dissertations and Theses

No abstract provided.

A Study Of Some Factors Affecting Chromatographic Adsorption., Patterson B. Moseley

LSU Historical Dissertations and Theses

No abstract provided.

Studies In Analytical Chemistry: I. New Methods For The Determination Of Ash In Petroleum Crudes. Ii. Studies In Oscillographic Polarography., Gerald Perkins

LSU Historical Dissertations and Theses

No abstract provided.