1: 0.1 N HCl / tetrahydrofuran / 0.25 h / Ambient temperature 2: 51 percent / CH2Cl2 / 2 h / Ambient temperature 3: 10 mg / AcOH, AcONa.3H2O, H2O, 7percent NaHCO3, HCl / dioxane / 3.5 h / 100 °C View Scheme

1: 30 mg / 0.1 N HCl / tetrahydrofuran / 0.25 h / Ambient temperature 2: 51 percent / CH2Cl2 / 2 h / Ambient temperature View Scheme

hydrogenchloride in tetrahydrofuran 0.25 h; Ambient temperature;

hydrogenchloride in tetrahydrofuran 0.25 h; Ambient temperature;

1: 0.1 N HCl / tetrahydrofuran / 0.25 h / Ambient temperature 2: 51 percent / CH2Cl2 / 2 h / Ambient temperature 3: 1.43 g / AcOH, AcONa.3H2O, H2O, 7percent NaHCO3, HCl / dioxane / 3.5 h / 100 °C View Scheme