Boehmite nanoparticles are aluminum oxide hydroxide particles, which has large specific surface area and can be prepared using an inexpensive procedure in water. In this work, copper catalyst was immobilized on boehmite nanoparticles (Cu-dithizone@boehmite) using simple and inexpensive method and available materials. Further, this catalyst was characterized by SEM, EDS, WDX, XRD, AAS, FT-IR and TGA analysis. Cudithizone@boehmite was applied as highly efficient nanocatalyst in C-C coupling reaction (Suzuki reaction) under palladium-free and phosphine-free ligand. Also this catalyst was applied for the synthesis of polyhydroquinoline derivatives and selective oxidation of sulfides to sulfoxides. This catalyst was reused for several times without loss of its catalytic activity. Heterogeneity and stability of Cu-dithizone@boehmite was studied by hot filtration test.
