C-H and C-C Activation by Cobalt and Ruthenium Catalysis
by Marc Philipp Moselage
Date of Examination:2017-11-15
Date of issue:2017-12-18
Advisor:Prof. Dr. Lutz Ackermann
Referee:Prof. Dr. Lutz Ackermann
Referee:Prof. Dr. Franc Meyer
Referee:Prof. Dr. Dietmar Stalke
Referee:Prof. Dr. Manuel Alcarazo
Referee:Dr. Shoubhik Das
Referee:Dr. Franziska Thomas
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Abstract
English
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 were utilized for C–H activation reactions, namely C¬–H alkenylation with alkenyl esters and C–H allylation with allyl esters. Furthermore, the concept of cobalt-catalyzed C–H activation could be applied in the synthesis of indoles, as an important class of heterocycles. Apart from C–H activation, a methodology of the functionalization of C–C bonds was discovered using ruthenium catalysis. In this project, a C–C arylation in a decarboxylative and decarbamoylative fashion was accomplished. This was extended to a decarboxylative alkylation by C–C and C–C/C–H bond cleavage.
Keywords: C-H Activation; C-C Activation; Cobalt; Ruthenium; Alkenylation; Allylation; Indole Synthesis; Arylation; meta-selectivity