Synthesis of quinolines and their In vitro antioxidant activities under solvent free conditions by using the SiO2-Zn-MgO as a novel and reusable catalyst.

The present study was aimed to determine a novel route of synthesis of quinolines and their in vitro antioxidant activities. Synthesis of quinolines is simple, economic, effective and an easy way process has been developed by using the SiO2–Zn-MgO as a novel catalyst. The quinolines antioxidative potential was evaluated using 1,1-Diphenyi-2-Picrylhydrazyl (DPPH), superoxide radical, hydroxyl radical, and hydrogen peroxide radical assay by in vitro methods. Quinolines exhibited highest level of antioxidant activities, and therefore it could be used as antioxidant that may have potential benefits in health and disease management.