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 7 of 7 for “"non-nucleophilic"”.
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Total synthesis and study of myrmicarin alkaloids
… Cyclic and acyclic vinyl triflates along with non-nucleophilic azaheterocycles were found to be substrates for this palladium catalyzed synthesis of N-vinyl pyrrole and indole derivatives. III. Dimerization of (+)-Myrmicarin 215B. A Potential Biomimetic Approach to Complex Myrmicarin Alkaloids …
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Mechanistic investigation of the interrupted Bischler-Napieralski reaction and its application to the total synthesis of the aspidosperma alkaloids
… c-quaternary tertiary lactams require the use of non-nucleophilic pyridine additives in order to avoid deactivation via a competing desulfonylation reaction. The isolation and full characterization of a tetracyclic iminium trifluoromethanesulfonate provided additional correlation between in situ …
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Leveraging the Properties of Aprotic Solvents Towards Efficient Electrocatalytic Carbon Dioxide Reduction
… with simultaneous usage of a buffer which is non-nucleophilic and whose pKa is matched to the carbon dioxide / bicarbonate equilibrium. Under such conditions, the selectivity to carbon monoxide can be driven as high as 90% with only millimolar equilibrium bicarbonate formation: a compromise …
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Rhodium-Catalyzed Enantioselective Desymmetrizations of Oxabicyclic Alkenes and Alkene Difunctionalization via Nickel-Catalyzed Arylcyanation
… bridgehead substituted oxabicyclic alkenes with non-nucleophilic side chains are reacted with the [Rh(cod)2]OTf/PPF-PtBu2 catalyst in the absence of an external nucleophile, chiral epoxides are obtained. The synthesis of epoxides through cycloisomerization reactions possesses 100% atom economy …
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Organometallic Palladium Reagents for Polypeptide Bioconjugation and Macrocyclization
… and cyclic peptide OACs are accessible through non-exhaustive C–S arylation, leaving the active Pd(II) site intact for future functionalization to small molecules or other biomolecules. Chapter 2: Macrocyclic peptides hold immense potential for targeting “undruggable” protein-protein …
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INVESTIGATIONS OF HYPERVALENT IODINE COMPOUNDS IN ORGANIC TRANSFORMATIONS
… to 2-iodobenzoic acid. The presence of a nucleophilic halide ion is essential for such reaction to occur. Replacing halides with non-nucleophilic BF4- halts the reaction. Benzylic halides provides a better yield than aliphatic alkyl halide. Thus, it is believed that there is a fast …