Green synthesis of quinazoline derivatives using a novel recyclable nano-catalyst of magnetic modified graphene oxide supported with copper

Graphene is obtained from graphite in the presence of permanganate, sulfuric acid and hydrogen peroxide, which contains different functional groups such as epoxy, acid, hydroxyl and ketone. In the next step, magnetized graphene nanosheets GO@Fe₃O₄ were created by adding iron to GO, and then functionalized its surface with 3-chloropropyltrimethoxysilane, which reacts more easily with the ligand. Then by placing the synthesized ligand of HBPB, the GO@Fe₃O₄@TRMS@HBPB is created and in the last step, the catalyst was synthesized by placing copper acetate on the GO@Fe3O4@TRMS@HBPB. FTIR,…