Stereospecific synthesis of phosphono-(1Z,3E)-dienyl compounds from β-phenyltelluro-vinylphosphonates and -vinylphosphine oxides

Phosphono-1,3-dienyl compounds 2 can be prepared by palladium cross-coupling reaction of β-phenyltelluro-vinylphosphonates or -vinylphosphine oxides with alkenes in the presence of a catalytic amount of PdCl2 and AcOAg as reoxidant agent at room temperature. The coupling reaction is stereospecific and the compounds 2 were obtained in good yields with total retention of configuration.