Light-Driven Pd-Radical Hybrid Species: Mechanistic Aspects and Recent Examples

Visible light-induced Pd mediated reactions have become a novel and promising field in organic synthesis. This photocatalytic arsenal presents complementary features towards traditional Pd-chemistry, allowing the achievement of new and unique reactivities by generation of versatile Pd-radical hybrid species. These putative intermediates can be produced by direct excitation of Pd complexes, together with organic radical precursors. This review aims at describing recent advances regarding the combination of Pd-based photocatalytic manifolds and radical generation in the functionalization of important motifs in synthetic chemistry, encompassing detailed mechanism descriptions and relevant examples.