Palladacycle phosphine complexes as homogeneous catalysts for the Heck cross-coupling reaction at low catalyst loading under aerobic conditions

A highly efficient Heck coupling reaction between various aryl halides and olefins using palladacycle complexes, under aerobic conditions has been developed. High yields, low catalyst loadings and short reaction times are important features of these homogeneous reactions. Palladacycle 1 can be reduced to zerovalent palladium whilst dppe dioxide was formed.