Abstract The syntheses of tert-alkyl nitroso compounds RCH 2 CMe 2 N= O from commercially available tert-alkyl amines RCH 2 CMe 2 NH 2 proceed cleanly via the intermediacy of the benzoyl derivatives RCH 2 CMe 2 NHOC (O) Ph and the corresponding hydroxylamines RCH 2 CMe 2 NHOH. Since the intermediates require no purification in the course of the transformations, the overall yields of the isolated crystalline nitroso dimers ( ...