Base Metal Meets Photoredox Chemistry – Advances in Fully Catalytic Metal-Catalyzed Hydrogen Atom Transfer Reactions

Metal-catalyzed hydrogen atom transfer (MHAT) has become a valuable approach for the functionalization of alkenes and toward complex molecular structures. This review discusses recent advancements in the field, particularly the integration of metal catalysis with photoredox catalysis which obviates the need for sacrificial reagents. Key transformations, including heterocycle formation, olefin hydrofunctionalization, and semi-pinacol rearrangements are examined in detail, highlighting the potential of photo-MHAT for efficient and sustainable synthetic strategies.