Photoredox Catalysis

Dear Colleagues,

The development of new advanced medicines and materials relies crucially on our ability to generate diverse molecular structures through chemical synthesis. Photoredox catalysis has emerged as a powerful reaction manifold in this context, and is, in many regards, revolutionizing how chemists think about chemical synthesis.

The application of photoredox catalysis in synthesis has been rapidly expanding in recent years. It enables selective radical chemistry to occur at ambient conditions, fuelled by light as the ultimate energy source. A broad spectrum of advantages has led to a wealth of completely new reaction methodologies and applications appearing in the literature. In synergy with other catalytic processes, photoredox catalysis provides chemical potential for transformations that have previously been considered impossible to do under conditions suitable for selective chemical synthesis. For example, a range of classical, "exotic" radical reactions have been re-engineered into photoredox-catalyzed processes and rendered more selective and, hence, valuable synthetic transformations. The use of photoredox catalysis to achieve late-stage functionalization in complex molecules has also become an extremely attractive strategy for synthesis. Therefore, the continued development of valuable transformations in this area is anticipated.

The aim of this Special Issue of Catalysts is to highlight recent additions to the photoredox catalysis toolkit, including new synthetic transformations, catalysts and applications. Studies offering mechanistic insights into photoredox catalyzed processes and catalyst design would also be of great interest.

Dr. Jørn H. Hansen
Guest Editor

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• Homogeneous photocatalysis
• Radical reactions
• Late-stage functionalization
• C–H functionalization
• Computational photocatalysis
• Synthetic applications
• Synergistic catalysis
• Mechanistic studies
• Visible light photocatalysis
• Organic materials and medicines