Stille Coupling Made Easier—The Synergic Effect of Copper(I) Salts and the Fluoride Ion

CsF and CuI do the trick: Stille coupling reactions of aryl/vinyl iodides, triflates, and bromides with aryl/vinyl stannanes are greatly enhanced by the inclusion of CsF and CuI in the reaction mixture (see scheme; Conditions A: [Pd(PPh3)4]/CsF/CuI/DMF/45 °C; Conditions B: PdCl2/PtBu3/CsF/CuI/DMF/45 °C).