2,2,6,6-tetramethyl-1-piperidinyloxy, free radical; trimethylsilylazide; oxygen in acetonitrile T=80°C; P=760.051 Torr; 36 h; Schlenk technique; regioselective reaction;

sodium azide; oxygen; copper(II) bis(trifluoromethanesulfonate) in pyridine; methanol 4.5 h; Irradiation;

1: potassium tert-butylate / dimethyl sulfoxide / 0.5 h 2: 16 h 3: water; sodium carbonate / |Reflux View Scheme

1: 2,2,6,6-tetramethyl-1-piperidinyloxy, free radical; trimethylsilylazide; oxygen / acetonitrile / 24 h / 80 °C / 760.05 Torr / |Schlenk technique 2: potassium tert-butylate / dimethyl sulfoxide / 0.5 h 3: 16 h 4: water; sodium carbonate / |Reflux View Scheme

copper (I) cyanide; lithium bromide; zinc Yield given. Multistep reaction;

Yield given. Multistep reaction;