1: 1-hydroxybenzotriazole, N,N'-dicyclohexylcarbodiimide, triethylamine 2: AcOH-H2O, 2-propanol, H2 / Pd/C View Scheme

1: 68 percent / cyanuric fluoride, pyridine / CH2Cl2 / 0.75 h / -10 °C 2: 80 percent / triethylamine / dimethylformamide; H2O / 0.08 h / 0 °C 3: TsOH, H2O View Scheme

1: 69 percent / N,N'-diciclohexylcarbodiimide / 1,2-dimethoxy-ethane / 20 h / 4 °C 2: 38 percent / triethylamine / dimethylformamide / 48 h / Ambient temperature 3: AcOH-H2O, 2-propanol, H2 / Pd/C View Scheme