Abstract:

Phosphine-free palladium nanoparticles were embedded in a fluorous organic−inorganic hybrid material 6b prepared by the sol-gel process. The use of Pd_n·6b in the Heck coupling reaction under microwave irradiation has been investigated. Recycling studies have shown that the catalyst can be readily recovered and reused several times without significant loss of activity. Reactions and recovery of the solid-supported palladium catalyst system can be carried out in the presence of air, without any particular precaution.