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Palladium nanoparticles supported on modified polystyrene resin as a polymeric catalyst for Sonogashira–Hagihara coupling reactions

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This polymeric ligand was reacted with PdCl 2 to obtain a polymeric Pd(0) complex. The TEM image of the Pd catalyst showed good dispersion of catalytic sites. The Pd catalyst exhibits excellent activity and stability in copper-free Sonogashira–Hagihara cross-coupling reactions under aerobic conditions. This protocol can be applied efficiently to the coupling reactions of chloro- as well as iodo- and bromo-arenes. The catalyst can be reused several times without any considerable decrease in its activity. |

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Palladium nanoparticles supported on modified polystyrene resin as a polymeric catalyst for Sonogashira–Hagihara coupling reactions