pd–ninhydrin immobilized on magnetic nanoparticles: synthesis, characterization, and application as a highly efficient and recoverable catalyst for suzuki–miyaura and heck–mizoroki c–c coupling reactions

In this work by controlling the interaction between the inorganic complexes and the support material, we have designed a high-activity nanostructured combined of magnetic nanoparticles and pd–ninhydrin-terminated complex as catalyst. the as-prepared catalyst was characterized by ft-ir, xrd, vsm, sem, edax, icp, and tga techniques. this magnetic nanostructure can be used as a novel, green, and efficient heterogeneous catalyst for suzuki–miyaura and heck–mizoroki c–c coupling reactions. this catalyst showed promising catalytic activity and excellent yields toward various aryliodides and arylbromides in mild reaction conditions. in suzuki–miyaura reactions, various aryl halides (i, br) were coupled with phenyl boronic acids in 5 mg of catalyst and 8 mg of catalyst used for mizoroki–heck reaction of aryl halides (i, br) with n-butyl acrylate or acrylonitrile. the catalyst was reusable and recycled six times without a significant loss in activity and leaching of palladium.