text: Palladium complexes containing chiral phosphinooxazolines have been shown to be efficient catalysts for the Heck reaction.  High yields and good to excellent enantioselectivities have been obtained, with the formation of by-products via C=C bond migration being greatly reduced. Pd-PHOX catalysts have also been used for intramolecular Heck reactions and examples exist where they have been shown to be superior to more common ligands such as BINAP.