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 “"Electrocyclization"”.
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An approach to catalytic asymmetric electrocyclization
… was to investigate catalytic asymmetric 6π electrocyclizations that will enable the rapid synthesis of highly functionalized molecules. We have demonstrated that the transient hexatriene precursors for [1,6]-electrocyclization are difficult to synthesize. When possible the central cis-alkene …
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Synthesis, Vinylation and Rearrangement of NH-Isoxazolines and Copper Catalyzed 6 Pi Electrocyclization
… establishing a method for copper catalyzed 6 π electrocyclization to form morpholines and morpholine–N–oxides via an initial Chan–Lam coupling followed by spontaneous electrocyclization.
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Silicon-Directed Nazarov Cyclization
… can be explained by a rate-limiting cationic electrocyclization. The degree of stereochemical control was modest (ca. 3:1) in forming the indenone ring system. The substituent in the major isomer was always cis to the ring fusion protons. Thorough spectroscopic and conformational analysis …
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Synthesis of Aryl Ynol Ethers and Their Synthetic Applications
… cyclobutenones could undergo a retro-4π/6π electrocyclization reaction to afford naphthlenes. Finally, we utilized this novel electrocyclization in the synthesis of dictyodendrins F, H, and I. In particularly, we used the hetero-[2+2]-cycloaddition reaction between aryl ynol ethers to form …
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Synthesis and Assembly of Dihydroindolizines on Gold Surfaces for Light Induced Work Function Alterations
… to the stability of the zwitterion before the electrocyclization to the spiro species.</p>
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Total synthesis of ent-plagiochianin B and development of a metathesis approach to aleutianamine.
… include the utilization of a 6p-azatriene electrocyclization and the subsequent discovery of a palladium catalyzed oxidative cleavage of a terminal olefin. The strained and heavily bridged pyrroloiminoquinone alkaloid aleutianamine was isolated in 2019 from the North Pacific sponge …
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Palladium-catalyzed C-N cross-coupling reactions toward the synthesis of drug-like molecules
… this cross-coupling can be used for a subsequent electrocyclization through a reaction with aldehyde, demonstrating that a relatively simple two-pot methodology can be used to make relatively complex substrates with pharmaceutical applications. Both amides and amidines are common moieties in …