Transition Metal–Catalyzed Allylic C(sp³)–H Functionalization via η³‐Allylmetal Intermediate

As an efficient and facile access to linear or branched allylic compounds, transition metal-catalyzed allylic C(sp3)–H functionalization reaction via η3-allylmetal intermediates has gained increasing interest in recent years. Pd, Rh, Ru, Ir, Fe and Co-catalyzed systems have all been successfully achieved, affording various allylic compounds bearing a diverse set of functionalities. Herein, we provide a comprehensive review of this burgeoning...