2,5-оксазолидиндион
2,5-оксазолидиндион атрибут
| Температура плавления: |
120 °C (dec.) (lit.) |
| плотность: |
1.469±0.06 g/cm3(Predicted) |
| температура хранения: |
-20°C |
| пка: |
9.32±0.20(Predicted) |
| Справочник по базе данных CAS: |
2185-00-4 |
| FDA UNII: |
9V6987Y758 |
2,5-оксазолидиндион химические свойства, назначение, производство
Подготовка
Into a suspension of finely ground glycine (15 g) in dry dioxane (750 mL), phosgene was introduced in a fine stream at 45–50 °C with efficient agitation. A clear solution was obtained after 5 h. This solution was filtered to remove unreacted glycine (1.7 g), and the dioxane was then removed under reduced pressure at a temperature below 40 °C with protection from moisture. The residue was treated with dry diethyl ether (100 mL), and the crystals of 2,5-oxazolidinedione were collected by filtration and dried over P2O5 in a vacuum desiccator. The crude product so obtained, 16 g (89%), was recrystallized from ethyl acetate/petroleum ether to yield 14.3 g (77.2%) of pure material, which showed no melting point because of polymerization.
2,5-оксазолидиндион препаратная продукция и сырье
сырьё
препарат
2,5-оксазолидиндион поставщик
Global( 83)Suppliers