sodium hydroxide in water T=20 - 25°C; 2 h;

1: 77 percent / sodium ethoxide / ethanol / 20 h / Heating 2: 82 percent / sodium hydroxide, sodium dithionite / H2O / 0.17 h / Heating 3: 93 percent / acetic anhydride / 0.25 h / Heating 4: 58 percent / phosphoryl chloride / 2 h / Heating 5: 83 percent / thiourea / ethanol / 0.5 h / Heating 6: 74 percent / sodium hydroxide / H2O / 2 h / 20 - 25 °C View Scheme

1: 1.) sodium methoxide, 2.) ammonium chloride / 1.) methanol, RT, 2 h, 2.) methanol, RT, 2 h 2: 77 percent / sodium ethoxide / ethanol / 20 h / Heating 3: 82 percent / sodium hydroxide, sodium dithionite / H2O / 0.17 h / Heating 4: 93 percent / acetic anhydride / 0.25 h / Heating 5: 58 percent / phosphoryl chloride / 2 h / Heating 6: 83 percent / thiourea / ethanol / 0.5 h / Heating 7: 74 percent / sodium hydroxide / H2O / 2 h / 20 - 25 °C View Scheme

1: 73 percent / hydrochloric acid, sodium nitrite / H2O / 1 h / Ambient temperature 2: 82 percent / sodium hydroxide, sodium dithionite / H2O / 0.17 h / Heating 3: 93 percent / acetic anhydride / 0.25 h / Heating 4: 58 percent / phosphoryl chloride / 2 h / Heating 5: 83 percent / thiourea / ethanol / 0.5 h / Heating 6: 74 percent / sodium hydroxide / H2O / 2 h / 20 - 25 °C View Scheme

1: 58 percent / phosphoryl chloride / 2 h / Heating 2: 83 percent / thiourea / ethanol / 0.5 h / Heating 3: 74 percent / sodium hydroxide / H2O / 2 h / 20 - 25 °C View Scheme

1: 83 percent / thiourea / ethanol / 0.5 h / Heating 2: 74 percent / sodium hydroxide / H2O / 2 h / 20 - 25 °C View Scheme

1: 82 percent / sodium hydroxide, sodium dithionite / H2O / 0.17 h / Heating 2: 93 percent / acetic anhydride / 0.25 h / Heating 3: 58 percent / phosphoryl chloride / 2 h / Heating 4: 83 percent / thiourea / ethanol / 0.5 h / Heating 5: 74 percent / sodium hydroxide / H2O / 2 h / 20 - 25 °C View Scheme

1: 93 percent / acetic anhydride / 0.25 h / Heating 2: 58 percent / phosphoryl chloride / 2 h / Heating 3: 83 percent / thiourea / ethanol / 0.5 h / Heating 4: 74 percent / sodium hydroxide / H2O / 2 h / 20 - 25 °C View Scheme