Dokumente Fakultät für Chemie (inkl. GAUSS) nach Gutachter "Ackermann, Lutz Prof. Dr."
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Studies Toward Selenium-pi-Acid Catalyzed Oxidative Functionalizations of Olefinic and Acetylenic Multiple Bonds
(2020-09-24)The focus of this thesis was the oxidative functionalization of alkenes via selenium-pi-acid catalysis. In the realm of dual photoredox/selenium-pi-acid catalysis, the known methodology was expanded to the use of alcohols ... -
Sustainable Methods in C–H Functionalizations
(2023-05-30)Cross-coupling chemistry has matured in an attractive tool in synthetic organic chemistry to realized efficient formation of C‒C and C‒Het bonds. However, these transformations are also associated with certain drawbacks, ... -
Sustainable Ruthenium- and Rhodium-Catalyzed C−H Activations with Photochemistry and Electrochemistry
(2024-03-18)Cross-coupling chemistry stands out as a fundamental tool in synthetic organic chemistry for forging C‒C and C‒Het bonds. However, the necessity for substrate prefunctionalization imposes significant sustainability challenges ... -
Sustainable Strategies for Site-Selective C–H Functionalizations of N-Heterocycles
(2015-03-03)The development of sustainable strategies for the synthesis of highly functionalized N-containing heterocycles is of great importance for the preparation of pharmaceuticals, agrochemicals and functional materials. Thus, ... -
Sustainable Strategies for Site-Selective C−VC Bond Formations through Direct C−H Bond Functionalizations
(2012-02-15)Transition-metal-catalyzed direct arylations have emerged as a viable alternative to traditional cross coupling chemistry in recent decades, as they constitute an economically attractive ... -
Sustainable Syntheses of Substituted Heterocycles through Ruthenium- and Palladium-Catalyzed Direct C−H Bond Functionalizations
(2014-10-22)The research presented within this thesis is focused on the development of new synthetic methods for the construction of heterocyclic frameworks through ruthenium- and palladium-catalyzed direct C–H bond functionalizations. ... -
Sustainable Synthesis by 3d Transition Metal Electro-Catalyzed C─H Activation
(2020-01-20)During the last years, new opportunities are represented by the development of 3d transition metal-catalyzed C–H activation, with possible benefits due to the significantly lower toxicity, high natural abundance and ... -
Syntheses and Characterization of Polyimidosulfate Complexes
(2015-02-12)In this work, novel metal complexes of the sulfur-nitrogen ligand, [S(NtBu)4]2-, were synthesized by exchange of lithium atoms or by other metal salts. Moreover, novel lithium complexes of asymmetric hydrogen tetraimido ... -
Synthesis and reactivity of succinylthioimidazolium salts: A unified strategy for the preparation of thioethers
(2020-12-21)Sulfur is one of the main group elements on our planet with a natural abundance of (0.46±0.15)w%. In its most common allotropic form sulfur is a yellow powder and exhibits a cyclic S8 structure. Apart of the cyclic S8 ... -
Synthesis of fluorescent toxin and nucleotide derivatives to specifically address membrane proteins
(2015-07-15)Within this project, new tools for in vivo/in vitro labelling were developed and investigated, which may be utilized in the future to elucidate structures, localisation and distinct processes of biomolecules in their native ... -
Synthesis of Orotidine-5'-monophosphate modifications for the study of the catalytic activity of the enzyme Orotidine-5'-monophosphate decarboxylase
(2022-01-27)In this thesis, the synthesis of OMPD substrate analogs was investigated to further elucidate the mechanism of the OMPD. As inhibiting molecules, 6-thioamido UMP, OMP methyl ester, reduced OMP, and nonpolar substituted ... -
Synthesis, Structure and Applications of Cationic Phosphonites
(2018-11-07)Phosphorus based ligands are a hugely important class of ligands for homogenous catalysis, owing to the easy fine-tuneability of their steric and electronic properties. In α-cationic phosphines, the incorporation of a ... -
Towards a total synthesis of bazzanin K
(2022-05-31)Bazzanin K is a natural product from the group of macrocyclic bis-bibenzyls which was isolated from the liverwort bazzania trilobata. This work is dedicated towards the development of a synthetic strategy with bazzanin K ... -
Towards an effective control of the electronic properties in Au(I)-complexes.
(2017-02-21)The dissertation is divided in two different parts, both related with gold(I) chemistry. In the first part, a new class of gold(I)-carbene complexes, the acyclic (amino)-(ylide)carbene (AAYCs) gold(I) chlorides, are presented ... -
Transition Metal- and Electro-Catalyzed C-H and B-H Activation for the Efficient Synthesis of Carborane Derivatives
(2023-01-12)The emergence and rapid development of transition metal-and electro-catalyzed C-H activation has proven to be a powerful tool in the assembly of complex molecular structures. in addition, the selective synthesis of carborane ... -
Transition Metal-Catalyzed C-H Functionalization for Sustainable Syntheses of Alkenes and Heterocycles
(2015-05-13)The rapid progress of C–H functionalization chemistry over the last decade has provided numerous efficient protocols for forming new chemical bonds. Especially, the ruthenium(II)-catalyzed direct C–H alkenylations and ... -
Transition Metal-Free Catalytic Systems for the Utilization of CO2 to Achieve Valuable Chemicals
(2020-11-03)The utilization of one of the most threatening greenhouse gases regarding the climate change could help changing its reputation from a harmful waste toward a green alternative feedstock. For the afore-mentioned reason, it ... -
Untersuchungen zur Synthese fluoreszenzaktiver aromatischer Polyzyklen durch Palladium-katalysierte Domino-C‒H-Aktivierungen
(2014-11-18)Fluorescent dyes were synthesized via novel fourfold Palladium-catalyzed domino reactions consisting of a Sonogashira reaction, two carbopalladations and a C-H-activation in one domino process. -
Untersuchungen zur Wirkstoffproduktion extremophiler Mikroorganismen sowie Biosynthese und Derivatisierung ausgewählter mikrobieller Naturstoffe
(2009-07-23)The present work deals with the isolation, characterization and chemical derivatization of natural products from extremophilic microorganisms and streptomycetes. In order to ...