Browsing by Advisor "Jahn, Ullrich"
Now showing items 1-8 of 8
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1,3-Dialkyl-4,5-dymethylimidazol-2-ylidene Amines as a New Class of Strong Electron Donors in Design and Synthesis of Organosuperbases and Stable Cations
Defence status: DEFENDED(Univerzita Karlova, Přírodovědecká fakulta, 2011)Date of defense: 13. 12. 2011Roman A. Kunetskiy Syntéza organosuperbazí a stabilních kationtů na bázi 1,3-dialkyl-4,5-dimethylimidazol- 2-ylidenaminů jako nového druhu silných elektron-donorů / 1,3-Dialkyl-4,5- dimethylimidazol-2-ylidene Amines as a ... -
Asymmetric Tandem Lithium Amide Conjugate Addition/Radical Reactions and Their Application in the Total Synthesis of Natural Products
Defence status: DEFENDED(Univerzita Karlova, Přírodovědecká fakulta, 2019)Date of defense: 6. 12. 2019This thesis deals with single-electron transfer (SET) radical processes mediated by ferrocenium hexafluorophosphate and TEMPO and their application in the total synthesis of natural products. Asymmetric aminooxygenation ... -
The Combination of Organometallic, Transition-Metal Catalyzed, Radical and Carbocationic Reaction Steps to Domino Processes
Defence status: DEFENDED(Univerzita Karlova, Přírodovědecká fakulta, 2017)Date of defense: 30. 1. 2017V této práci je představena metodika, spojující reaktivní meziprodukty ve více oxidačních stavech do tandemových sekvencí. Zkoumaná sekvence se skládá z 1,2-adice organokovů/izomerizace katalyzované přechodnými kovy/Michaelovy ... -
Conjugate Addition Coupled with Enolate Oxidation in the Total Synthesis of Natural Polyphenols
Defence status: DEFENDED(Univerzita Karlova, Přírodovědecká fakulta, 2023)Date of defense: 20. 3. 20231 SOUHRN Tato práce popisuje vývoj reakcí složených z konjugované adice, vedoucí k tvorbě C-C vazby, spojené s oxidativní cyklizací a aplikaci této strategie v totální syntéze přírodních polyfenolů. První část se zabývá ... -
New Carbanion Rearrangement of Sulfur Compounds and Its Application
Defence status: DEFENDED(Univerzita Karlova, Přírodovědecká fakulta, 2015)Date of defense: 11. 9. 2015New Carbanion Rearrangement of Sulfur Compounds and Its Application Abstract This thesis reports the investigation of an unusual reversal in the metalation selectivity of alkyl aryl sulfones and sulfoxides and its application. ... -
New Thermal and Oxidative Radical Cyclization Methodology and Application to the Total Synthesis of Bridged Diketopiperazine Alkaloids
Defence status: DEFENDED(Univerzita Karlova, Přírodovědecká fakulta, 2016)Date of defense: 27. 5. 2016This thesis describes the development of new thermal and oxidative radical cyclization methodologies and their application to the total syntheses of alkaloids, particularly to bridged diketopiperazine (DKP) alkaloids. A ... -
Oxidative cyclizations of enolates for syntheses of natural stilbenolignans
Defence status: DEFENDED(Univerzita Karlova, Přírodovědecká fakulta, 2018)Date of defense: 4. 6. 2018 -
Tandem Anionic Sigmatropic Rearrangement/Radical Reactions and Their Application Toward the Total Synthesis of Natural Products
Defence status: DEFENDED(Univerzita Karlova, Přírodovědecká fakulta, 2022)Date of defense: 31. 5. 2022The thesis describes the development of unprecedented tandem reactions merging anionic oxy-Cope rearrangement with single-electron transfer oxidation of thus generated metal enolates by ferrocenium hexafluorophosphate. The ...