ET catalysis of Au25 in intramolecular cascade reaction of 2-nitrobenzonitrile, from which 2-amniobenzamide (a precursor of significant pharmaceuticals20,21) is produced with high yield. fluorodenitration of 2-nitrobenzonitrile with Rb18F in DMSO gave an 85% yield of the 18F-labelled benzonitrile after only 20 minutes at 150°C.