Global ETD Search

1	Instability and Extrachromosomal Circular DNA Formation at Microsatellites and Unstable DNA Sequences Shanahan, Matilyn M. 02 September 2022 (has links) No description available. Biochemistry Molecular Biology extrachromosomal circular DNA (eccDNA) microsatellite DNAs Break-induced replication SN1 COPS2 Polymerase Eta Inverse PCR (iPCR) DNA repair
2	Studies towards Developing Diastereoselective SN1 Reactions of α-Keto Carbocations Dubland, Joshua 06 April 2010 (has links) Although α-keto carbocations have been demonstrated to be viable intermediates in solvolysis reactions, their applications in synthesis are scarce. These species can be considered to be equivalent to “reversed polarity” enolates and, as such, could be useful for the asymmetric formation of carbon-carbon and carbon-heteroatom bonds. In principle, facial selectivity in additions to α-keto carbocations may be induced using easily removed ester, amide, or imide chiral auxiliaries. Efforts to achieve such diastereoselective SN1 reactions of α-keto carbocations are described herein. diastereoselective SN1 reaction alpha-keto carbocation nucleophilic substitution reaction carbon-carbon bond forming reaction carbon-heteroatom bond forming reaction chiral auxiliary asymmetric synthesis Lewis acid-mediated Bronsted acid-mediated silver-mediated organic chemistry leaving group ester amide imide 0490 0485
3	Studies towards Developing Diastereoselective SN1 Reactions of α-Keto Carbocations Dubland, Joshua 06 April 2010 (has links) Although α-keto carbocations have been demonstrated to be viable intermediates in solvolysis reactions, their applications in synthesis are scarce. These species can be considered to be equivalent to “reversed polarity” enolates and, as such, could be useful for the asymmetric formation of carbon-carbon and carbon-heteroatom bonds. In principle, facial selectivity in additions to α-keto carbocations may be induced using easily removed ester, amide, or imide chiral auxiliaries. Efforts to achieve such diastereoselective SN1 reactions of α-keto carbocations are described herein. diastereoselective SN1 reaction alpha-keto carbocation nucleophilic substitution reaction carbon-carbon bond forming reaction carbon-heteroatom bond forming reaction chiral auxiliary asymmetric synthesis Lewis acid-mediated Bronsted acid-mediated silver-mediated organic chemistry leaving group ester amide imide 0490 0485

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