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

Abstract

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.