Metal‐Promoted Coupling Reactions Implying Ligand‐Based Redox Changes

Coupling reactions are staples in the synthetic world and their efficiency relies on well-defined, mostly bis-electronic, elementary catalytic steps. An area of great interest currently lies in the taming of radical species and their efficient introduction in catalytic cycles. Among these species bearing radical character, redox-active ligands hold much potential and can be used to sustain synthetically relevant couplings by introducing ligand-based electronic contribution. This minireview aims at presenting the current state of this promising field.