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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

SPONTANEOUS REACTIONS AND NEW COPOLYMERS FROM ELECTRON DEFICIENT, HIGHLY SUBSTITUTED OLEFINS.

RIGHETTINI, ROBIN FRANCIS. January 1985 (has links)
The experimental results of the current work have three parts. First, the synthesis and characterization of several new copolymers by the free-radical copolymerization between several highly substituted electron-deficient olefins and furan, benzofuran, indene, alphamethylstyrene, and divinyl ether is discussed. Electron-poor olefins used included dimethyl cyanofumarate, carbomethoxymaleic anhydride and tricarbomethoxyethene. The spontaneous reactions of these monomer pairs were also investigated in both bulk and solution. Second, the effect of synthesis temperature on the composition of the previously reported (co)polymers of styrene with tricarbomethoxyethene and dimethyl dicyanofumarate are given. A ceiling temperature for the synthesis of this copolymer was found to be 220°C. Attempted copolymerization of tetracarbomethoxyethene gave evidence of a small but detectable amount of reaction. Finally, detailed procedures for the synthesis of dimethyl cyanofumarate, carbomethoxymaleic anhydride and tricarbomethoxyethene are given, including a new synthesis of carbomethoxymaleic anhydride.
32

The oxidation of hydrocarbons using model systems for the cytochrome P-450 mono-oxygenases

Inchley, P. January 1987 (has links)
No description available.
33

A study of the oxidation of alkenes catalysed by polymer supported iron porphyrins

Leanord, Donald Robert January 1989 (has links)
No description available.
34

Chiral hydroperoxides in asymmetric epoxidation

Gill, Christopher David January 2001 (has links)
No description available.
35

The Stereochemistry and Mechanism of Alkylhaloketene-Olefin Cycloadditions

Roe, Robert, 1934- 06 1900 (has links)
The objectives of this research problem was to employ alkylhaloketene-olefin isomer distributions to aid in understanding the stereochemistry and mechanism of alkylhaloketene-olefin cycloadditions.
36

Diastereoselective, Alkoxide-Directed Diborations of Alkenyl Alcohols

Caya, Thomas Charles January 2014 (has links)
Thesis advisor: James P. Morken / The metal-catalyzed diboration of alkenes has gained fame as a practical methodology for use in the stereoselective construction of complex organic molecules and synthetic building blocks. The created carbon-boron bonds have tremendous versatility and can easily be manipulated into carbon-carbon or carbon-heteroatom bonds. Unfortunately, metal-catalyzed diborations often suffer from limitations such as substrate specificity. To address these issues, we investigated diboration reactions in the absence of transition-metal catalysts. Herein is presented a transition-metal-free, diastereoselective diboration methodology utilizing alkenyl alcohols as substrates. Allylic alcohols can be treated with an organolithium base and bis(pinacolato)diboron to generate 1,2,3-triols upon oxidation. Most studies were done on homoallylic alcohols, which can be performed using a carbonate base and an alcohol additive. This methodology has many strengths, such as a wide substrate scope and high levels of diastereoselectivity. Further investigations into product functionalization and synthetic applications will be pursued in due time. / Thesis (MS) — Boston College, 2014. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Chemistry.
37

Highly substituted beta-diketiminato chromium compounds for olefin polymerization catalysis

BinTaleb, Abdulmalik M. January 2007 (has links)
Thesis (Ph. D.)--University of Delaware, 2006. / Principal faculty advisor: Klaus H. Theopold, Dept. of Chemistry & Biochemistry. Includes bibliographical references.
38

Stereospecific synthesis of polyene-containing natural products using an olefin template strategy /

Ghasemi, Haleh. January 2004 (has links)
Thesis (Ph.D.)--York University, 2004. Graduate Programme in Chemistry. / Typescript. Includes bibliographical references (leaves 167-179). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pNQ99174
39

Studies of substituted olefins in ring closing olefin metathesis and approaches toward a synthesis of manzamine A /

Courtney, Anne Kathleen. January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 267-282). Available also in a digital version from Dissertation Abstracts.
40

Investigation of poly(pyrrolone-imide) materials for the olefin/paraffin separation

Burns, Ryan Lance. January 2002 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.

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