Cross-coupling of aryl/alkenyl ethers with aryl grignard reagents through nickel-catalyzed C-O activation
The formation of a C-C bond has been achieved through the cleavage of the sp2 C-O bond of aryl/alkenyl ethers catalyzed by a nickel complex, and by using Grignard reagents as nucleophiles (see scheme). This method displays a broad substrate scope and leads to good to excellent yields of the aryl-aryl or alkenyl-aryl cross-coupling products.