Physical Sciences and Mathematics Commons^™

Investigations Into The Diazoketone Synthesis Of 3-Methyl-2-Cyclopentenone, Robert Alan English

Honors Theses

This research was carried out in order to determine the effects of both the etherate and anhydrous forms of RF3 catalyst upon l-diazo-4-methyl-4-penten-2-one (I). It was hoped that cyclization could be induced to occur due to the presence of the neighboring olefinic bond. 3-Methyl-2-cyclopentenone, itself had been synthesized by a much more direct method than proposed here. (1)

The Preparation Of 1, 1'Tetramethylene Ferrocene, Arthur F. Grand

Honors Theses

The discovery of ferrocene, bis-cyclopentadienyl iron, in 1951 stimulated further research into a relatively new field of Organic Chemistry, organometallies. Ferrocene is the first of a series of transition metal-organic ring compounds in which the metallic atom is bound covalently to two cyclopentadiene rings (Fig III). The rings are superimposed over one another with the single atom inbetween; thus, they are often referred to as “sandwich compounds.” The following procedure is that which Rinehart (11) used to prepare the acid derivative β-ferrocenoylpropionic acid (VII). The preparation consists of adding 7.4 g. of ferrocene and 2.0 g. of succinic anhydride in …

Addition Reactions Of Quinones, Herman Helber

Honors Theses

The general purpose of this project has been to obtain a knowledge about the reaction of para-benzoquinone when irradiated with ultraviolet light in water or ethanol. The 1, 4, benzoquinone, often called simply quinone, is a yellow crystalline solid melting at 116°C and having a sharp penetrating odor. Quinone shows a marked increase in reactivity when it is irradiated with U.V. A possible explanation for this could be that the electrons in central carbon atoms of the quinone absorb quanta of energy. The resulting excited state could then leas to a free radical formation. This could account for the increased …

Polarographic Studies Of The Dicyanoaurate And Tetracyanoaurate Complexes, Peter Neddermeyer

Honors Theses

A polarographic study of the dicyanoaurate and the tetracyanoaurate complexes has been made. Distinct current-voltage curves were obtained for both complexes with and without supporting electrolyte.Polarography has been shown to be a good quantitative method of analysis for the two gold-cyanide complexes.

The Effects Of Ph And Salts On The Viscosity Of Protein Solutions, John H. Smith

Honors Theses

The purpose of this work was to determine, as a function of pH, the viscosity of gelatin solutions containing various monovalent anions. The sequence of these anions in their ability to depress viscosity, that is, the Hofmeister or Lyotropic series of anions, will be validated for the following salts: Sodium bromide, sodium iodate, sodium formate, sodium chloride and sodium nitrate.

A Preliminary Investigation Of The Photo-Induced Rearrangement Of Phenylnitromethane And Problems In Its Synthesis, Peter Barry Fleming

Honors Theses

As originally envisioned, this project was to involve the synthesis of phenylnitromethane and the subsequent photolysis of that compound. It was hoped that identification and separation of the photochemical products would lead to some basic conclusions regarding inter- and intra- molecular photo-induced rearrangements. Some light might also be thrown on energy transfer in a system of non-conjugated double bonds. Comparison of the products obtained from phenylnitromethane and higher homologs of the series, where n = 2,3,4 with the known reaction nitrobenzene could lead to conclusion on structure versus products and structure versus efficiency of energy transfer along an alkyl chain. …

Investigation Into The Reactions Of Aliphatic Methoxydiazo-Ketones Upon Treatment With Boron Trifluoride Etherate, Donald Paul Hoster

Honors Theses

This research was a study of the possible cyclization reactions of the aliphatic methoxydiazoketones (I) and (II) upon treatment with BF3 etherate. Previous work in this area had dealt with aromatic systems. J. Moore and H. Shaffer (10) showed that 1-diazo-3-(o-anisyl)-2-propanone (III) is converted in about 35% yield to chromanone (IV) upon treatment with BF3. They obtained lesser amounts of chromanone and larger amounts of open chain products when mineral acids were employed. Diazoketones such as (V) and (VI) have shown a pronounced tendency to form four-membered rings upon treatment with mineral acids. (8) No open chain products were isolated …

The Thermal, Catalytic Decomposition Of Sugar, Herman Carl Kluge

Honors Theses

During the past year, an attempt was made to determine the products of a thermal decomposition of both glucose and fructose and also, the effects of certain catalysts upon this decomposition. From these data, an attempt was also made to devise a mechanism for this decomposition.

Synthesis And Reactions Of Diazoketones, William H. Thielking

Honors Theses

The object of the present research, to extend the previous work to an aliphatic system by replacing the aromatic ring by one or more alkyl groups. Specifically, it is the object of this work to effect the closure of the ring compound from its respective diazoketone.

Inter- And Intra-Molecular Alkylbenzene Rearrangements With Aluminum Chloride Catalyst Using C14 Proportional Counting Of Vapor Phase Chromatographic Effluents, Robert Donald Farina

Honors Theses

End products were examined from six reactions between o-xylene and carbon-14 ring labeled toluene using an excess of aluminum chloride catalyst. The reactions were carried out at different temperatures and for periods of varying duration in order to observe the effects of temperature and heating time on the product mixtures.

Self-Diffusion In Single-Crystal Tungsten And Diffusion Of Rhenium Tracer In Single-Crystal Tungsten, Robert L. Andelin

Chemistry and Chemical Biology ETDs

Self-diffusion in single-crystal tungsten and diffusion of rhenium tracer in single-crystal tungsten have been measured over the temperature range 2660 C to 3230 C by the direct sectioning technique. The initial radioactive layer of tungsten and rhenium tracers was produced on the diffusion samples by bombardment with 9. 0-MeV deutrons. It was shown that the initial radioactive layer satisfactorily approximated the boundary-condition requirements of the one-dimensional diffusion equation. The tracers observed in determining the diffusion coefficients were W^185, Re^183, and Re^184.

Differentiation Between The Ph Effect And The Bicarbonate Ion Effect In Causing Lime-Induced Chlorosis, Hyrum Del Var Petersen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Lime-induced chlorosis has been recognized for many years as a problem where plants are grown on calcareous soils. There are many factors associated with and influencing this form of iron chlorosis and because of this it has been very difficult to determine the relationship between the factors and chlorosis.

Nitrite Reactions In Soil, John Otto Reuss

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Losses of soil nitrogen that cannot be attributed to leaching or crop removal have been observed in many field experiments. Several mechanisms have been proposed to account for these losses.

Molecular Addition Compounds :|Bi. Systems Of P-Dioxane With Alkyl Halides, Anisole, And Silicon Tetrachloride ; Ii. Titanium Tetrachloride Chargetransfer Complexes Of Benzene, P-Xylene, And Pseudocumene, Nolan F. Mangelson

Theses and Dissertations

Freezing-point diagrams were detennined tor a number or p-dioxane systems. The system, p-dioxane:carbon tetrachloride, was found to contain a 1:2 complex with a congruent melting point of 255.71 °K. This confirmed work reported in the literature. Solid solutions in the region between 0.0000 and 0.4796 mole fraction of p-dioxane were found in the present study. The system, p-dioxane:chloroform, was found to contain a 1:2 complex with a congruent melting point of 215.65 °K. It was determined that no other complexes formed in the solid state. This information resolved contradicting reports in the literature. The system, p-dioxane:dichloromethane, was found to contain …

The Synthesis And Reactions Of 7-Carboxy Isatoic Anhydride, Elsa M. Janle

Chemistry Honors Papers

This 16 page thesis examines the preparation and characterization of 7-carboxy isatoic anhydride and the study of the reactions of this compound of new composition.

The Synthesis Of 2, 4, 6, 8 - Tetraoxo - 1, 2, 3, 4, 6, 7, 8, 9 - Octahydro-Benzo (1, 2-D:-5, 4-D') Bis (1, 3) Oxazine, Calvin L. Moyer

Chemistry Honors Papers

This 29 page thesis examines the synthesis of the three ring heterocyclic system containing two dioxo-1, 3-oxazine rings.

Magnetic Structure Investigations At The Nuclear Center, R. Ballestracci, E. F. Bertaut, J. Coing-Boyat, A. Delapalme, William Joseph James, R. Lemaire, R. Pauthenet, G. Roult

Chemistry Faculty Research & Creative Works

The magnetic structure of the compounds UOS, ß-CoSO₄, YCO₅, and HoCO₅ is briefly described.

UOS is antiferromagnetic. The Néel temperature is T_n=55°K. The magnetic cell is doubled in the c direction with a ++ - - sequence of U moments along c. The apparent spin is S∼1. The negative interaction corresponds to U-O-U links.

In ß-CoSO₄ (high-temperature modification, space group Pbnm), Co atoms are in 000, 00½, ½½½, ½½0. Here three different antiferromagnetic spin modes, mutually perpendicular, A_x(+ - - +), G_y(+-+-), and C_z(++ - - …

The Kinetics Of The Hydrolysis Of Some 2-Imidazolines, Bobby G. Harnsberger

Chemistry and Chemical Biology ETDs

In recent years, 2-imidazolines have become important industrially. Possible applications include uses as drugs, fungicides, emulsifying agents, demulsifying agents, corrosion inhibitors, fuel oil additives and gasoline additives.

Directive Effects In The Sulfonation Of Toluene ; Synthesis And Attempted Rearrangement Of Some Anilinoketones ; The Kinetics And Mechanism Of The Addition Of Bromine To Cyclohexene In Dichloromethane. Solution, John Joseph Duvall

Theses and Dissertations

The pure sodium salts of the toluenesulfonic acids were prepared by one of two ways. Both methods started with diazotization of the toluidine. In the first method, the diazonium solution was treated with sulfur dioxide and copper powder, and the resulting sulfinic acid was oxidized to the sulfonic acid with potassium permanganate. In the second method, the diazonium solution was treated with cuprous chloride and sulfur dioxide to give the sulfonyl chloride which was hydrolyzed to the sulfonate. Toluene was sulfonated by SO3 (enriched with S-35) in refluxing SO2 solution. The isotope dilution technique was used to determine the isomer …

The Preparation And Chemical Properties Of Tetracyclo [3.3.0.0^2,8.0^4,6] Octan-3-One, Arnold G. Phillips

Wayne State University Theses

No abstract provided.

Hints On Irrigating Citrus With Saline Water, Stanley Thomas Smith

Journal of the Department of Agriculture, Western Australia, Series 4

IN the past few years a number of citrus orchards near Perth have shown signs of damage caused by excess "salt" (chloride) uptake. All have been irrigated either from the Canning River or from private bores or dams.

Senior Soil Research Officer S. T. Smith describes glasshouse experiments which have given some useful guides to minimising "salt" damage in citrus trees irrigated with low-quality water.

Rates Of Acidic Hydrolysis Of Triptych Boroxazolidines, Ronald Keith Stump

University of the Pacific Theses and Dissertations

Upon looking at the results of calculation of the rate constants given in Table 2, there are revealed some general trends as to the influence of the substituent groups on the values of the rate constants. If the rate constants of the reaction are considered at a fixed temperature, the rates of reaction in Group I decrease as the substituent is gradually changed from methyl to isopropyl. As soon as the substituent is changed from alkyl to an ether type,the rate of cleavage increases nearer to that of the parent compound again. The rate of cleavage of the nitrogen-boron bond …

1,3,5,7-Sym-Hydrindacentetrone And Its Derivatives, Irven Davies

University of the Pacific Theses and Dissertations

Three chapters of this dissertation, therefore,are devoted to describing the synthesis of 1,3,5,7-s-hydrinda-centetrone using the three starting materials, pyromellitic dianhydride by means of the four above described reactions.

1,3,5,7-s-Hydrindacentetrone, itself, and its properties are described in Chapter three when first prepared.

An entire chapter is devoted to the preparation of the dinitroso and dinitro derivatives; both because of the complexity of their reactions and because of their relative importance.

An additional chapter is devoted to other miscellaneous derivatives.

Conclusions have been drawn as to the appropriateness of each method of synthesis and are presented at the end of their respective …

High Frequency Titrations In Liquid Ammonia, Jack Charles Hileman

University of the Pacific Theses and Dissertations

An extensive literature has been established on the use of high frequency conductometric methods in chemical analysis and research. The fact that the instruments respond to chemical changes without having electrodes immersed in the reacting solutions has attracted the attention of many investigators. Until the last few years, practically all of the investigations were concerned with aqueous solutions, with the exception of measurements of dielectric constants.

There seemed no logical reason for not extending the use of the high frequency instruments to the study of Bronsted acid-base reactions, organic syntheses, rates of reaction, and the other commonly studied aspects of …

Control Of Copper, Zinc And Manganese Deficiencies In Fruit Trees, N J. Halse

Journal of the Department of Agriculture, Western Australia, Series 4

THE three elements copper, zinc and manganese are plant nutrients of the type often referred to as minor or trace elements.

Although essential elements for plant growth, they are required in comparatively small quantities.

Hydroxy Derivatives Of Benzalthiophenone, John M. Newey

University of the Pacific Theses and Dissertations

It is the purpose of this work to prepare a series of these chalcones containing the thiophene ring.

The compounds were prepared by the condensation of a series of benzaldehydes with acetylthiophene dissolved in dry ethylacetate and saturated with dry HCl. The benzaldehyde compounds were benzaldehyde, m-hydroxybenzaldehyde, o-hydroxybenzaldehyde, O-p-dihydroxybenzaldehyde and vanillin. To prevent the oxidation of the hydroxy groups of the benzaldehydes, the compounds were benzolated with benzoylchloride. The condensed products were debenzoylated with NaOH solution in an atmosphere of nitrogen to prevent oxidation during the debenzoylation process.

Atomism In Late Nineteenth-Century Physical Chemistry, George Fleck

Chemistry: Faculty Publications

No abstract provided.

Determination Of Thallium(Iii) Using The Dead-Stop End Point, Richard Blount Williams

University of the Pacific Theses and Dissertations

An accurate and fairly rapid method of analysis of thallium solutions is desirable in order to facilitate further investigation of the chemistry of thallium. The dead-stop titration method which has been successfully applied to other metals of Group 3b, will not be applied to the quantitative determination of the thallium (III) ion in aqueous solution.

An Introduction To The Analytical Study Of Mercury (Ii) Ion - Thiazate Complex, Jess Horlanda Reyes

University of the Pacific Theses and Dissertations

The problem involved in this research was to characterize some of the chemical and physical properties of thiazate through analytical procedure. At most, this thesis is a report of the findings when this compound reacts with mercury (II) ions in basic solutions. The methods of investigation made use of the Beckman Model DS and DU spectrophotometers, and the Beckman pH meter.

Hydrolysis Of Alpha-D-Glucosamine-L-Phosphate, Michael James Pizanis

University of the Pacific Theses and Dissertations

Some information on the hydrolysis mechanism of phosphate esters was obtained by studying the kinetics of ∝-D-Glucosamine-1-phosphate.

∝-D-Glucosamine-1-phosphate was synthesized, an experimental pH-rate profile for the hydrolysis of this phosphate was determined at 100 C.

It was proposed that Species I (see page 7) had P-O cleavage with intramolecular proton transfer to ester oxygen. Species II is believed to have the same mechanism of hydrolysis as monoanion of methyl phosphate and monoanion of ∝-D-Glucosamine-1-phosphate. This study indicates that Species III s reactive, while the dianion of methyl phosphate and the dianion of ∝-D-Glucosamine-1-phosphate are inactive. The increased reactivity of Species …