A5010642384- Radical Photochemical Reactions
- Oxidative Organic Chemistry Reactions
- Advanced biosensing and bioanalysis techniques
- Fluorine in Organic Chemistry
- Synthesis and Biological Evaluation
- Polyoxometalates: Synthesis and Applications
- Chemical Synthesis and Reactions
University of Chemistry and Technology, Prague
2022-2024
Catalyst recovery is an integral part of photoredox catalysis. It often solved by adding another component-a sacrificial agent-whose role to convert the catalyst back into its original oxidation state. However, additive may cause a side reaction thus decreasing selectivity and overall efficiency. Herein, we present novel approach towards chemoselective photooxidation reactions based on suitable solvent-acetonitrile acting simultaneously as electron acceptor for recovery, anaerobic...
Three series of novel deazaflavinum salts differing in their substitutions at positions 5 (R = H, phenyl or mesityl), 7 and 8 OMe, Me, H Cl) were synthesized as potential catalysts a chemoselective visible light–mediated anaerobic oxidation primary secondary alcohols to carbonyl compounds. This mild procedure uses acetonitrile solvent, which acts simultaneously sacrificial electron acceptor (in place the oxygen usually used photooxidation reactions) therefore reaction does not need any...
Catalytic performance of three structurally-related dicyanopyrazine catalysts has been investigated in photoredox transformations including deuteration aldehydes, cross-coupling iodo-substituted (hetero)aromatic substrates, and a-hydrogen abstraction from amines followed by annulation to pyrroloquinoline. Significantly different catalytic activity the photocatalysts explained with aid electrochemical, spectroscopic, quantum-chemical methods. Electrochemical measurements pointed reversible...