a green palladium (pd)‐based catalyst supported on rosa canina fruit extract‐modified graphene oxide [pd nanoparticles (nps)/reduced graphene oxide (rgo)‐rosa canina] hybrid materials has been used as a recoverable and heterogeneous nanocatalyst for cyanating aryl halides using k4[fe (cn)6] as the resource of cyanide. the nitriles were achieved in good to high yield, and the catalyst can be recovered and reused for up to seven cycles with no remarkable decrease in its catalytic activity.
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