1: 95 percent / NEt3 / ethanol / 24 h / Ambient temperature 2: 90 percent / H2 / 10percent Pd/C / dioxane; methanol / 760 Torr / Ambient temperature 3: 51 percent / KH2PO4, (KSO3)2NO / methanol; H2O / 4 h 4: 35 percent / 4.5 h / 0 °C View Scheme

1: 90 percent / H2 / 10percent Pd/C / dioxane; methanol / 760 Torr / Ambient temperature 2: 51 percent / KH2PO4, (KSO3)2NO / methanol; H2O / 4 h 3: 35 percent / 4.5 h / 0 °C View Scheme

1: 95 percent / NEt3 / ethanol / 24 h / Ambient temperature 2: 90 percent / H2 / 10percent Pd/C / dioxane; methanol / 760 Torr / Ambient temperature 3: 51 percent / KH2PO4, (KSO3)2NO / methanol; H2O / 4 h 4: 35 percent / 4.5 h / 0 °C View Scheme

1: 51 percent / KH2PO4, (KSO3)2NO / methanol; H2O / 4 h 2: 35 percent / 4.5 h / 0 °C View Scheme

T=0°C; 4.5 h;