Mechanistic Insights into Light-Driven Acceptorless Dehydrogenation Reactions

-hybridized C-C bonds in hydrocarbon substrates via oxidative C-H addition with subsequent β-hydride elimination. Second, binary homogeneous photocatalytic systems, consisting of a photosensitizer and a transition-metal-based proton reduction catalyst, enable all four types of dehydrogenation reactions via SET. Third, heterogeneous catalysts employed in light-driven dehydrogenation reactions often comprise a semiconductive support material integrated with a transition-metal-based active site, functioning via Mott-Schottky type photoinduced charge separation.