Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"One-pot process"”.
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A novel, versatile D-BCD steroid construction strategy, illustrated by the total syntheses of estrone and desogestrel
… syntheses of the steroids desogestrel and estrone, utilizing a 1,4 addition/alkylation process to install the correct stereochemistry at C8, C13 and C14 in a single-pot operation. The racemic total synthesis of desogestrel includes a successful domino anionic cyclisation leading to the …
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Synthesis and Chacterization of Novel Polybenzimidazoles and High-Solids Meta-Polybenzimidazoles
… electrolyte membrane (PEM) fuel cells are one of the most promising alternative power devices available due to their multiple applications as well as their clean and efficient operation. PEM fuel cells that operate at high temperatures (> 120oC) have advantages over low temperature PEM fuel …
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Microwave-Assisted Conversion of Sucrose into 5-Hydroxymethylfurfural over Acidic Nanoporous Materials
… alternative sources for energy and chemicals. One potential starting resource that is worldwide distributed and renewable is biomass. Cellulose, the most plentiful source of biomass on earth, can be hydrolyzed into biofuel precursors such as 5-hydroxymethylfurfural (HMF). However, due to the …
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Designing new chiral hydroxamic acid ligands for the asymmetric epoxidation reaction in water
… cases, the overall transformation can occur as a one-pot process. A brief investigation into the development of organocatalytic transfer hydrogenation mediated by chiral pyridines has also been carried out. In this project, a range of chiral quarternary ammonium salts have been prepared as …
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Studies Towards the Total Synthesis of the Chivosazoles
… subsequent modifications for assembling the backbone of chivosazole F. Paterson boron aldol methodology and Evans-Tishchenko reduction were utilised to construct the 1,4-syn and 1,3-anti stereochemical relationships within both fragment A and fragment B. Di-tert-butyl silyl group was used for the …
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METAL-CATALYSED CROSS-COUPLING REACTIONS OF NITROGEN HETEROCYCLES
… of benzimidazole, 1-methylbenzimidazolone, imidazole and pyrrole. The products of these reactions then undergo palladium-catalysed C-C cross-couplings with aryl or heteroarylboronic acids under Suzuki-Miyaura conditions to provide a rapid entry to tris(hetero)aryl scaffolds comprising …
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Enhancing the cooperative binding properties of1,1'-bis(1,2,3,4-tetrahydroisoquinolines)
… two steps could be accomplished in a sequential one-pot process. The mono-alkyl compounds were further derivatized through acetylation, alkylation, sulfonylation and reductive alkylation. Synthetic strategies towards π-excessive N-arenealkyl derivatives were established with the goal to create …
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Process Study, Simulation, and Optimization of the Direct Conversion of Biomass to Ethyl Levulinate
… from biomass recycling activities. A novel one-pot, biphasic, acid-catalyzed hydrolysis-esterification process developed by Prof. Tom Baker's lab (uOttawa Chemistry) was used. Kinetic analyses of the overall reaction pathway and major reaction steps were performed to investigate the effect …
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Dearomative transformations in synthesis: I. Dearomative dihydroxylation with arenophiles II. Total synthesis of lycoricidine and narciclasine III. Towards the total synthesis of collybolide
… termed arenophiles, we have accomplished a one-pot process for dearomatizing benzene, naphthalene, and higher order aromatic systems and trapping the dearomatized intermediates with osmium-catalyzed dihydroxylation. Through this approach, we have accessed a number of dihydrodiol and …
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Quantum dot labelled antimalarials and investigation of their interaction with synthetic haemozoin
… The reaction was completed using a two-step, one-pot process with 1-ethyl-3- (3-dimethylaminopropyl)carbodiimide (EDC) as a coupling agent. The product of the reaction, chloroquine derivative-labelled CdSe/ZnS quantum dot (QD-CQ), was characterized, recording the fluorescence emission spectrum …