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Now showing items 51-60 of 115
A study of the acetolyses of 2-acetoxyalkyltellurium trihalides
(1992)
The oxidation of alkenes using tellurium tetrachloride is a two step process. The first step has been shown to be the anti addition of tellurium and oxygen across the double bond. This work examines the second step of the ...
Lewis acids activated and catalyzed cyclization and addition reactions of aminyl radicals from N-hydroxypyridine-2-thione carbamates
(1993)
This dissertation discusses the use of Lewis acids to activate and catalyze cyclization and addition reactions of aminyl radicals generated from N-hydroxypyridine-2-thione carbamates to unsaturated systems under very mild ...
Synthesis and efficacy of dibenzofuran-based diacids and amino acids designed to nucleate parallel and antiparallel beta-sheet formation
(1992)
The synthesis of 4,6-dibenzofurandipropionic acid 18 and 4-(N-tertbutyloxycarbonyl-2-aminoethyl-)-6-dibenzofuranpropionic acid 19, designed to nucleate parallel and antiparallel (β-sheet formation respectively, was ...
Mechanistic studies on the oxidative coupling of methane
(1993)
The magnitude of the KIE during the catalytic oxidative coupling of methane and its variation with respect to methane-to-oxygen ratio is taken as evidence that under most conditions the formation of CH3 - radicals at the ...
Sterically encumbered N2S2 complexes of nickel
(1994)
A new ligand based on 1,5-diazacyclooctane (daco) with an increase in steric hinderance has been synthesized. The ligand N,N$spprime$-(bis-2-methyl-$2 $-mercaptopropane)-1,5-diazacyclooctane (bme*-daco) was prepared by the ...
Platinum and Platinum alloy electrocatalysts for oxygen electrodes in Proton Exchange Membrane Fuel Cells : electrochemical and x-ray absorbtion spectroscopic investigation
(1994)
Research on proton exchange membrane fuel cells (PEMFCs) has gained momentum due to the prospects of attaining high energy and power densities, which are essential for transportation and space applications. One of the major ...
Synthesis and characterization of magnesium aluminum phosphates, and related compounds
(1994)
Magnesium aluminophosphate molecular sieves of AlPO$sb4$-5 structure have been synthesized with varying Mg/(Mg + Al + P) mole ratios using triethylamine as an organic template. The synthesized products were characterized ...
A study of secondary ion correlations using coincidence counting time-of-flight mass spectrometry
(1994)
Coincidence counting techniques have been combined with time-of-flight mass spectrometry (TOF-MS) in a study of secondary ion relationships using keV and MeV projectiles. The method is based on analyzing the results of ...
The investigation of the superdegeneracy approach to organic ferromagnets, and the allylboration of alkenes and alkynes using allylic dichloroboranes
(1994)
Several model compounds of potential ferromagnetic organic polymers were synthesized and studied after being reduced with sodium metal. These compounds and target polymers were designed using the principles of the ...
Synthesis and efficacy of square planar copper complexes designed to nucleate Beta-sheet structure
(1995)
The synthesis of four 6,6'-bis(acylamino)-2,2'-bipyridine-