1: 88 percent / aq. HCl, SeO2 / 80 °C 2: 56 percent / conc. H2SO4, conc. HNO3 / 1 h / 0 - 20 °C 3: 82 percent / 2-methoxy-ethanol; H2O / 0.17 h / Heating 4: 40percent aq. NH4SH / methanol / 3 h / Heating 5: methanol; H2O / 3 h / Heating View Scheme

1: 56 percent / conc. H2SO4, conc. HNO3 / 1 h / 0 - 20 °C 2: 82 percent / 2-methoxy-ethanol; H2O / 0.17 h / Heating 3: 40percent aq. NH4SH / methanol / 3 h / Heating 4: methanol; H2O / 3 h / Heating View Scheme

1: 82 percent / 2-methoxy-ethanol; H2O / 0.17 h / Heating 2: 40percent aq. NH4SH / methanol / 3 h / Heating 3: methanol; H2O / 3 h / Heating View Scheme

1: 40percent aq. NH4SH / methanol / 3 h / Heating 2: methanol; H2O / 3 h / Heating View Scheme

in methanol; water 3 h; Heating; Yield given;