lithium hydroxide; dihydrogen peroxide T=0 - 20°C; 13 h;

1.1: 84 percent / 4-methylmorpholine (NMM); ClCOtBu / tetrahydrofuran / -12 °C 2.1: H2O2 / tetrahydrofuran; H2O / 1 h / 0 °C 2.2: 93 percent / tetrahydrofuran; H2O / 12 h / 20 °C View Scheme