Browsing Fakultät für Chemie (inkl. GAUSS) by Advisor "Ackermann, Lutz Prof. Dr."
Now showing items 1-20 of 63
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Aerobic Ruthenium-Catalyzed C–H Activations
(2018-08-31)Within the last decades C–H activation processes have evolved from a promising concept to a powerful class of reactions for the construction of organic molecules, especially pharmaceutically active compounds. Within this ... -
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 ... -
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 ... -
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 ... -
Chelation-Assisted C–H Activation by Ruthenium and Osmium Catalysts and Recyclable Hybrid Catalysts
(2021-10-25)Since hydrocarbons are omnipresent structural units in organic compounds, the utilization of C–H bonds of hydrocarbons has great potential. Thereby, organic chemists have had utmost interests in the transformation of ... -
Cobalt(III)- and Manganese(I)-Catalyzed C-H and C-C Activations
(2019-03-28)Metal-catalyzed C─H and C─C functionalizations have become an increasingly viable approach, which allows the direct formation of C─C and C─heteroatom bonds in an atom- and step-economical manner. However, the significant ... -
Cobalt- and Nickel-Catalyzed Functionalization of Unactivated C–Hal, C–O and C–H Bonds
(2013-11-20)First row transition-metal-catalyzed C–C/C–N bond formations through the functionalization of unactivated C–Hal, C–O and C–H bonds have been developed. The inexpensive nickel and cobalt complexes were introduced to facilitate ... -
C–H Activation by Iron(III), Manganese(II) and Rhoda(III)electro Catalysis
(2020-12-15)While major progress was realized with noble transition metal catalysts, the employment of cost-effective and earth-abundant 3d metals has gained significant momentum during the last decade. As stoichiometric amounts of ... -
C–H Activation by Ruthenium(II), Cobalt(III) and Manganese(I) Catalysis
(2017-07-07)C–H functionalizations have expanded the toolbox of organic chemistry and found widespread applications in the synthesis of complex and bioactive molecules. Within this thesis, several new synthetic transformations by ... -
C–H Activation via Iridium and Rhodium Electrocatalysis and Undirected Electrochemical Fluorination
(2022-06-24)In past decades, transition metal-catalyzed C–H activation has emerged as an increasingly viable toolbox for the step- and atom economic formation of C–C and C–Het bonds. However, oxidative C–H transformations heavily rely ... -
C–H and C–F Activation by Manganese, Nickel and Ruthenium Catalysis
(2021-04-19)The development of novel environment-friendly, step- and atom-economical methodologies is one of the main goals in organic chemistry. In this context, the direct functionalization of inert C–(Het) and C–H bonds has ... -
C−H Alkylations and Alkynylations Using Ruthenium, Nickel and Manganese Complexes
(2017-10-17)Transition metal-catalyzed C–H functionalizations have recently emerged as a reliable tool for the efficient chemo- and site-selective construction of C–C and C–Het bonds, which is of major importance for the preparation ... -
Development of Photo-Induced C–H Activation by Copper and Ruthenium Catalysis
(2019-11-08)Within recent decades, transition metal-catalyzed C–H activation has become a valuable and versatile tool for organic synthesis. As C–H bonds are ubiquitous in organic molecules, the direct site-selective functionalization ... -
Diversity-Oriented Assembly of C-Glycosides via Late-Stage C−H Glycosylation
(2023-08-29)C-glycosides are widely distributed structural motifs found in natural products and commercially available drug molecules. Due to the stability of glycosidic C-C bonds against chemical and enzymatic hydrolysis, only ... -
Earth-Abundant Transition Metal-Catalyzed Electro-Reductive Cross-Electrophile Coupling Reactions and C–H Activation by Cobaltaelectro-Catalysis
(2021-12-13)Within the last decades, immense progresses have been made with transition metal-catalyzed cross-electrophile reactions and C–H activation reactions. The merger of electrocatalysis with such powerful methods have further ... -
Electrochemical Benzylic C−H Fluorination and 4d-Metallaelectro-Catalyzed C−H and C−C Functionalizations
(2023-03-15)Direct functionalizations of C−H and C−C bonds have emerged as time-saving and cost-effective alternatives to established cross-coupling reactions. However, oxidative coupling variants require stoichiometric amounts of ...