Physical Sciences and Mathematics Commons^™

A Three Part Research Report: The Synthesis Of Potential Insecticides, N-(4-Heteroaryloxybenzoyl)-N'-(2,4-Dichlorobenzoyl) Hydrazines: A Reinvestigation Of Hexamethylphosphoramide With Ketoximes; Regioselective Fluoralkoxylation And Polyfluoroalkoxylation Of Activated Dihalobenzenes And Dihaloheterocycles, Gary A. Decrescenzo

Retrospective Theses and Dissertations

This report discusses research in three areas of organic synthesis: The synthesis of potential insecticides; the reinvestigation of the reaction of hexamethylphosphoramide with ketoximes; and the regioselective fluoroalkoxylation and polyfluoroalkoxylation of activated dihalobenzenes and dihaloheterocycles. In Part I, a series of N-(4-heteroaryloxybenzoyl)-N'-(2, 3-dichlorobenzoyl) hydrazines are synthesized, and attempts at cyclic dehydration to the corresponding 2, 5-disubstituted-1, 3, 4-oxadiazoles are discussed. In Part II, the synthesis of N, N-dimethyl-N'-aryl amidines by the reaction of aryl alkyl and diaryl ketoximes with HMPA is discussed. In Part III, a series of activated dihalobenzenes and dihaloheterocycles are reacted with sodium trifluoroethoxide to study the …

Modeling Of Laboratory Scale Batch Distillations With A Desktop Computer, Dale F. Johnson

Retrospective Theses and Dissertations

A program has been written that simulates the operation of a batch distillation process. The program has been implemented on a Hewlett-Packard 9845T minicomputer and will be used as an instructional aid in a graduate level chemistry course. The program is very user interactive and is capable of using the final conditions from one run as the initial values of the next simulation. The batch simulation is achieved by using a tray-by-tray algorithm and is equipped with three integration techniques; the Euler, the Modified Euler and the 4th order Runge-Kutta methods. The program has the capability for studying the effect …

Part I: The Synthesis Of Potential Agrochemicals. Part Ii: The Use Of Gold's Reagent As A Lynch Pin In The Formation Of Five And Six Membered Heterocycles, Keith F. Correia

Retrospective Theses and Dissertations

This research report focuses on two topics: the synthesis of potential agrochemicals and the use of Gold's reagent as a lynch pin to form five- and six-membered heterocycles. A diacyl hydrazide and two oxadiazoles are prepared for use as possible insecticides. Gold's reagent behaves as a one-atom and two-atom lynch pin when reacted with 1, 4- and 1, 5-dinucleophiles, respectively. Reaction conditions, interpretation of spectral data, and recommendations for further research are provided.

Oxidation Of Valencene To Nootkatone, Tung F. Chen

Retrospective Theses and Dissertations

The liquid phase autoxidation of the readily available sesquiterpene valencene to the commercially important perfuming agent nootkatone utilizing gaseous oxygen at atmospheric pressure has been investigated. Catalyst systems involving transition metal salts and complexes, and phase-transfer catalysts have been evaluated under different conditions of valencene concentration, catalyst concentration, reaction temperature, solvent and oxygen flow rate. Of eighteen candidate catalysts for the oxidation of valencene to nootkatone, chlorocarbonylbis (triphenylphosphine) iridium (Vaska's catalyst) demonstrated good activity and appeared to show the best potential for future work.

I :Synthesis And Evaluation Of Polymer Supported Homogenous Oxidation Catalysts. Ii: Synthesis And Evaluation Of Polymer Supported Multi Site Phase Transfer Catalysts Iii: Synthesis Of Potential Herbicides, Russell L. Leonard

Retrospective Theses and Dissertations

This report consists of three parts. Part I involved the synthesis and evaluation of some polymer supported homogeneous oxidation catalysts – specifically, the synthesis of polystyrene 2(bis-salicylaldehyde) 2-methyl propylene-1, 3-diiminato cobalt (II) and polystyrene 2(bis-2, 4-pentanedione) 2-methyl propylene-1, 3-diiminato cobalt (II). Part II involved the synthesis of both soluble and insoluble phase transfer catalysts designed to catalyze nucleophilic substitution reactions. Trisite quaternary phosphonium and disite quaternary phosphonium salts were prepared. Part III involved the synthesis of several potential herbicides.

A Two Part Research Report: Aromatic Nucelophilic Fluoroal Koxylation Via Cationic Phase Transfer Catalysis And Reactions Of Unsymmetrical Vinamidinium Salts With Organometallic Reagents, Joseph E. Coury

Retrospective Theses and Dissertations

This report discusses research which was conducted in two areas: the study of aromatic nucleophilic fluoroalkoxylation assisted via cationic phase transfer catalysis and the study of unsymmetrical vinamidinium salts and their reactions with organometallic reagents.

Sodium alkoxides have been successfully used to fluoroalkoxylate activated halo- aryl and heteroaryl substrates under phase transfer catalysis conditions. Optimum reaction conditions incorporated tetra-n-butyl-phosphonium bromide as the catalyst and refluxing toluene as the solvent medium. Different quarternary phosphonium and arrmonium salts have been evaluated as catalysts: also, the effects of activating groups, leaving groups, and nucleophiles have been reported.

The reaction of 3-dimethylamino-3-phenyl-prop-2-en-l-ylidendimethyliminium perchlorate with …