Transition Metal Complex Catalyzed Photo- and Electrochemical (De)hydrogenations Involving C=O and C=N Bonds

Abstract Herein, we summarize the photo- and electrochemical protocols for dehydrogenation and hydrogenations involving carbonyl and imine functions. The three basic principles that have been explored to interconvert such moieties with transition metal complexes are discussed in detail and the substrate scope is evaluated. Furthermore, we describe some general thermodynamic and kinetic aspects of such electro- and photochemically driven reactions. 1 Introduction 2 Dehydrogenation Reactions 2.1 Electrochemical Dehydrogenations Using High-Valent Metal Species 2.2 Electrochemical Dehydrogenations Involving Metal Hydride species 2.3 Photochemically Driven Dehydrogenation 3 Hydrogenation Reactions 3.1 Electrochemical Protocols 3.2 Photochemical Protocols 4 Conclusion 5 Abbreviations