oxygen in toluene T=80°C; P=760.051 Torr; 8 h;

2,2,6,6-tetramethyl-1-piperidinyloxy, free radical; oxygen; copper(II) bis(trifluoromethanesulfonate); (R)-(+)-1,1'-binaphthyl-2,2'-diamine in toluene T=80°C; 22 h; optical yield given as percent ee;

1: 94 percent / acetonitrile / 6 h / Heating 2: 95 percent / CH2Cl2 / 12 h 3: 17 percent / t-BuOK / toluene / 5 h / Heating View Scheme