1: 87 percent / (NH4)6Mo7O24*4H2O; H2O2 / ethanol / 2 h / 20 °C 2: HCl / ethyl acetate / 1.5 h / 20 °C 3: 84 mg / N-ethylmorpholine; HBTU / acetonitrile / 18 h / 20 °C 4: 68 percent / LHMDS / tetrahydrofuran; hexane / 3 h / -78 - 20 °C 5: 85 percent / HCl / methanol / 10 h / -20 °C 6: 98 percent / triethylamine; DMAP / CH2Cl2 / 1.5 h / 0 °C 7: 97 percent / TBAF / tetrahydrofuran / 3 h / 0 °C 8: 36 percent / Amberlyst 15 / tetrahydrofuran; H2O / 20 h / 20 °C View Scheme