Magnetically Recyclable Metal–Organic Framework@Fe3O4 Composite‐Catalyzed Facile Reduction of Nitroarene Compounds in Aqueous Medium

A kind of Metal–organic framework (MOF) composite namely Cu‐BTC@Fe3O4 (BTC = 1,3,5‐benzenetricarboxylate) was prepared and showed good catalytic activity toward the reduction of nitroarenes. This reaction proceeded smoothly under mild reaction conditions in aqueous medium using sodium borohydride as the reduction agent, affording the corresponding anilines in good to excellent yields. In addition, the catalyst could be easily recovered with an external permanent magnet and be reused for successive six runs with slight decrease in its activity. A magnetically recyclable Cu‐BTC@Fe3O4 composite was prepared and showed good catalytic activity toward the reduction of nitroarenes in aqueous medium.