sulfuric acid; sodium 1) EtOH, reflux, 4 h; 2) H2O; Yield given. Multistep reaction;

1: 1) sodium; 2) 7percent aq. H2SO4 / 1) EtOH, reflux, 4 h; 2) H2O 2: 70 percent / sodium hydroxide / H2O / 4 h / 80 °C / pH=14 3: 100 percent / HCl / H2O / 4 h / Heating; pH=1 View Scheme