A new generation of natural phosphate-supported palladium was synthesized by
treating natural phosphate with bis(benzonitrile)palladium(II) chloride in acetone. Its catalytic
activity was evaluated in selective hydration of nitriles. The reactions proceeded in the
presence of 0.4 mol% of the palladium catalyst at 160°C in water under microwave irradiation.
Several nitriles, including aromatic and heteroaromatic nitriles, were converted to corresponding
amides in good yields under neutral conditions. The recyclability and low cost
availability of this solid support make this approach very attractive. It encourages new fields
of research in the valorization of this natural resource and can change the current view of
Keywords: Natural phosphate, supported-Pd catalyst, microwave irradiation, selective hydration, amides, green chemistry.
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