Dokumente Fakultät für Chemie (inkl. GAUSS) nach Titel
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C-H Activation by Nickel and Iron Catalysis
(2019-08-08)The thesis contents methods for the selective activation and functionalization of C–H bonds, among the most abundant bonds in organic molecules. In particular, earth-abundant and cost-effective nickel and iron complexes ... -
C-H Activation for Sustainable Synthesis: Base Metal- and Electro-Catalysis
(2018-08-07)In the recent decades, metal-catalyzed C-H activation greatly expanded the available tools for the sustainable synthesis of bioactive molecules and organic materials. Within this thesis, new synthetic transformations based ... -
C-H and C-C Activation by Cobalt and Ruthenium Catalysis
(2017-12-18)The thesis contents methods for the selective activation and functionalization of C–H and C–C bonds, among the most abundant bonds in organic molecules. In particular, earth-abundant and cost-effective cobalt complexes ... -
C<sub>2</sub>-Symmetric Pyrazole-Bridged Ligands and Their Application in Asymmetric Transition-Metal Catalysis
(2016-06-03)Within the scope of this thesis the synthesis of a plethora of examples of in total three types of C2-symmetric pyrazole-bridged ligand systems (namely PyrBOX, PyrBPyBOX and ProPyrazole) could be established ... -
Carboxylate-Assisted Ruthenium(II)-Catalyzed C-H Alkylation and Alkenylation
(2015-10-30)Carboxylate-assisted ruthenium(II)-catalyzed C-H alkylation and alkenylation by triazole assistance and the efficient synthesis of isoindolinones -
Carboxylate-Assisted Ruthenium-Catalyzed C-H Bond meta-Alkylations and Oxidative Annulations
(2013-03-26)Site-selective ruthenium-catalyzed C-H bond functionalization was achieved under carboxylate-assistance. Direct ortho- and meta-alkylations on various arenes with unactivated alkyl halides has been accomplished and ... -
Carboxylate-Assisted Ruthenium-Catalyzed Direct C-H Bond Functionalizations
(2014-03-03)Ruthenium-catalyzed direct C–H bond functionalizations was shown to be an attractive approach for the development of sustainable chemical processes. The significant rate acceleration of cycloruthenations by carboxylates ... -
Carboxylic Acids Under Vibrational Scrutiny: Experimental Reference Data to Benchmark Quantum Chemical Calculations
(2020-10-20)Accurate vibrational reference data on carboxylic acids and their small hydrogen bonded clusters are provided in a multi-spectroscopic study to challenge and test the performance of modern quantum chemical calculations. ... -
Catalytic Insertion Reactions into the Cyclopropane Ring Syntheses of Various Belactosin C Congeners and Analogues
(2008-09-17)Catalytic insertion reactions of various cyclic (4-phenyl-1,2,4-triazoline-3,5-dione, PTAD) and acyclic (azobenzene, ethyl phenyldiazenecarboxylate and diisopropyl azodicarboxylate) diazene ... -
Catalytic syntheses and copper- or ruthenium-catalyzed direct C H bond arylations of (hetero)arenes
(2011-08-15)The work presented in this thesis represents recent advances in late-transition metal catalyzed cross-coupling reactions and direct arylations. The results described in section 3.1 focus ... -
Chain-transfer kinetics for free-radical homo- and coplymerizations of styrene and methyl methacrylate in supercritical carbon dioxide
(2001-07-25)Chain-transfer kinetics have been studied for styrene and MMA homo- and copolymerizations in bulk and in solution of supercritical CO2 (40 wt % scCO2). Three chain-transfer agents (CTAs) ... -
Characterization of Physical and Chemical Properties of Synthetic Polymer using Ion Mobility-Mass Spectrometry
(2017-12-13)This thesis focuses on developing analytical methodologies based on ion mobility-mass spectrometry (IM-MS) for both physical and chemical properties of synthetic polymer. Beyond numerical experimental data, a comprehensive ... -
Characterization of the amyloid precursor of alpha-synuclein by NMR spectroscopy
(2008-11-04)A number of human neurodegenerative diseases, including Alzheimer"s and Parkinson"s diseases (PD), are associated with the deposition of proteinaceous aggregates known as amyloid fibrils. ... -
Charakterisierung der Aktivität und Inhibition des rekombinanten, spannungsgesteuerten Protonenkanals HV1: Funktionelle Rekonstitution in unilamellare Vesikel
(2018-10-15)The human voltage-gated proton channel (hHV1) regulates important physiological processes like the respiratory burst activity of white blood cells and the motility of spermatozoa by efflux of protons. Reconstitution of the ... -
Charakterisierung maßgeschneiderter makromolekularer Systeme: Analyse von photoschaltbaren Polymeren und Untersuchung der Wärmeleitfähigkeit von Polymeren und Polymernanokompositen
(2021-04-23)In this work, tailored azobenzene-based polymers were synthesized and characterized with respect to their isomerization kinetics, micro structure and thermal conductivity. Additionally, the thermal conductivity of ... -
Charakterisierung von Intermediaten in Cobalt-vermittelten Reaktionen
(2019-04-03)Homogeneous catalysis is from outstanding importance for modern chemical synthesis. In addition to palladium- and nickel-based catalyst systems, which are well established for a long time, also cobalt-based catalysts are ... -
Charge Density Analysis of Low-Valent Tetrels
(2016-02-11)This thesis deals with the bonding situation of low valent tetrels. More precisely an experimental charge density study of the silylone (cAACcy)2Si was carried out in order to investigate whether the bonding in this new ... -
Charge Density Distribution in Low-Valent Tetrels
(2013-05-22)The scope of this work was the analysis of the electron density of low valent tetreles. For silicon and carbon-containing compounds. Especially low valent silicon compounds are of great interest because their synthesis has ... -
Charge-density analyses of metal complexes of the bis(benzoxazol-2-yl)methanide ligand
(2023-03-03)In this thesis, several metal complexes of the bis(4-CH3-benzoxazol-2-yl)mehanide (MeBOX) ligand were investigated in charge density studies based on high-resolution single-crystal X-ray diffraction experiments. The aluminium ... -
Chelate Ligands for the Stabilisation of Low-Valent Main Group Compounds
(2021-09-28)Reviewing the achievements in Group 13 metal complexes over the last decades, the main area of research is emerging to the development and utilisation of low-valent aluminium compounds and their heavier homologues. This ...