Pd/C: A Recyclable Catalyst for Cyanation of Aryl Bromides

Abstract Aryl cyanides have been prepared from the corresponding aryl bromides with potassium hexacyanoferrate(II) usingPd/C as a catalyst. It is shown that the addition of Bu3N is the key factor in obtaining the corresponding aryl cyanides. Furthermore, the catalyst can be recycled by filtration and washing sequences, making the method also attractive for industrial applications.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)