A Ligand Free and Room Temperature Protocol for Pd-Catalyzed Kumada-Corriu Couplings of Unactivated Alkenyl Phosphates

Kumada-Corriu cross-couplings of nonactivated cyclic and acyclic vinyl phosphates with aryl magnesium reagents afforded a series of 1,1-disubtituted alkenes in good yields for most cases when the reactions were performed at room temperature with the simple palladium salt, PdCl2, without the presence of phosphine ligands.