N-Aralkylacetamido-radicals, generated by photolysis of the corresponding N-nitroso- amides in various solvents, underwent extensive β-scission of C–H and C–C bonds, in benzene solution, shown by isolation of the appropriate fragmentation products. Although the reactions of amido-radicals were similar to those of alkoxy-radicals, β-scission of the C– Ar bond was not detected. Oxygen did not quench the primary photo-processes nor ...