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Arylsilylation of aryl halides using the magnetically recyclable bimetallic Pd-Pt-Fe3O4 catalyst.

Transition metal-catalyzed silylations have typically involved the use of homogeneous non-recyclable catalytic systems. In this work, the first example of a recyclable catalytic system for the synthesis of arylsilanes has been reported, which utilizes the bimetallic complex, Pd-Pt-Fe3O4 nanoparticles. Various arylsilanes were prepared by the reaction of aryl iodides (or bromides) with hydrosilanes. This methodology showed good functional group tolerance toward ester, ketone, aldehyde, nitro, and cyano groups. The bimetallic Pd-Pt-Fe3O4 catalytic system showed better activity than monometallic Pt-Fe3O4 and Pd-Fe3O4 catalysts. In addition, the bimetallic Pd-Pt-Fe3O4 catalytic system could be easily recovered and reused for over twenty cycles.