MetalOrganic Framework MIL53(Fe) as a highly efficient reusable catalyst for the synthesis of 2aryl1Hbenzimidazole

Metalorganic framework MIL53(Fe) (MIL = Materials of Institute Lavoisier) as recyclable and heterogeneous catalyst efficiently catalyzed the synthesis of 2Aryl1HBenzimidazole derivatives from ophenylenediamine and aldehydes in solventfree condition. This method provides benzimidazole in good to excellent yields with little catalyst loading. Furthermore, the catalyst can be readily isolated by filtering and no obvious loss of activity was observed when the catalyst was reused in five consecutive runs.