sulfuric acid in ethylene glycol T=130°C; 0.5 h;

1: 76.9 percent / conc. H2SO4 / Ambient temperature 2: 83 percent / H2O; 2-methyl-propan-2-ol / 1)15 min steam bath 2)room temp. 2h 3: 92.4 percent / conc. H2SO4 / 2 h / Ambient temperature 4: 81.9 percent / conc. H2SO4 / ethane-1,2-diol / 0.5 h / 130 °C View Scheme

1: 83 percent / H2O; 2-methyl-propan-2-ol / 1)15 min steam bath 2)room temp. 2h 2: 92.4 percent / conc. H2SO4 / 2 h / Ambient temperature 3: 81.9 percent / conc. H2SO4 / ethane-1,2-diol / 0.5 h / 130 °C View Scheme

1: 92.4 percent / conc. H2SO4 / 2 h / Ambient temperature 2: 81.9 percent / conc. H2SO4 / ethane-1,2-diol / 0.5 h / 130 °C View Scheme

1: 89.5 percent / β-alanine / aq. ethanol / 48 h / Heating 2: 76.9 percent / conc. H2SO4 / Ambient temperature 3: 83 percent / H2O; 2-methyl-propan-2-ol / 1)15 min steam bath 2)room temp. 2h 4: 92.4 percent / conc. H2SO4 / 2 h / Ambient temperature 5: 81.9 percent / conc. H2SO4 / ethane-1,2-diol / 0.5 h / 130 °C View Scheme