1: 85 percent / tetrabutylammonium fluoride / tetrahydrofuran / 0.5 h / 20 °C 2: H2 / Raney-Ni / methanol 3: 94 percent / NaOCl; NaClO2; 2,2,6,6-tetramethyl-1-piperidinoxyl / acetonitrile; aq. phosphate buffer / 24 h / 45 °C / pH 6.7 View Scheme