Palladium Loaded on Magnetic Nanoparticles as Efficient and Recyclable Catalyst for the Suzuki- Miyaura Reaction

Palladium is the best metal catalyst for suzuki cross coupling reaction for synthesize of unsymmetrical biaryl compounds. but its high cost limits its application  in wide  scale. using of nanoscale particles as active catalytic cites  is  a  good  approach  for  reducing  needed  noble  metal.  by  loading precious nanoparticles on magnetic nanocores as a support, recycling and reusing  of  catalyst  will  be  possible. magnetic  nanoparticles  have  super paramagnetic  feature and applying an  external magnetic  field  can collect the  supported  catalyst  from  reaction  milieu  simply.  in  this  work  new palladium  catalyst  immobilized  on  modified  magnetic  nanoparticles containing  nno  donor  atoms  were  synthesized.  then  the  catalyst characterized  by  ft-ir  spectroscopy,  thermogravimetric  analysis, x-ray diffraction and icp. prepared catalyst showed high activity in the suzuki–miyaura cross-coupling  reaction of phenylboronic acid with aryl halides. activity, pd  loading, reusability and pd  leaching of catalyst were studied. results  showed  that  the  supported  catalyst  has  the  advantage  to  be completely  recoverable  with  the  simple  application  of  an  external magnetic field.