1: With hydrogenchloride in water 0.5 h; Heating / reflux; 2: With sodium hydroxide in water T=20°C; pH=8;

hydrogenchloride T=20°C; 1 h; Reflux;

1: H2 / 10percent Pd/C / ethanol; 1,2-dimethoxy-ethane / 2585.7 Torr 2: 1 M aq. HCl / 0.33 h / Heating View Scheme

1: 1.) 90percent HNO3. conc. H2SO4, 2.) H2SO4 / 1.) 35 deg C, 20 h, 2.) reflux, 5 h 2: H2 / 10percent Pd/C / ethanol; 1,2-dimethoxy-ethane / 2585.7 Torr 3: 1 M aq. HCl / 0.33 h / Heating View Scheme