Magnetic nickel ferrite nanoparticles as an efficient catalyst for the preparation of polyhydroquinoline derivatives under microwave irradiation in solvent-free conditions

摘要

An easy and convenient method is reported for the synthesis of polyhydroquinoline derivatives in solvent-free conditions under microwave irradiation in the presence of magnetic nickel ferrite nanoparticles (NiFe2O4 MNPs) as a catalyst. Excellent yields (82-94 %), facile work-up, achieving high purity of products via simple recrystallization, and short reaction times (2-5 min) are some advantages of this procedure. It is worth noting, the catalyst is magnetically removed without significant loss of activity for reuse a few times.