Palladium-Catalyzed Cross-Coupling of Internal Alkenes with Terminal Alkenes to Functionalized 1,3-Butadienes Using CH Bond Activation: Efficient Synthesis of Bicyclic Pyridones
cross‐coupling of internal alkenes of α‐oxoketene dithioacetals with terminal alkenes has been successfully realized by palladium‐catalyzedCH bond activation, affording functionalized 1,3‐butadienes. Condensation of the resultant 1,3‐butadienes by diamines efficiently produced potentially bioactive bicyclic pyridone derivatives (see scheme).