- Gly-NCA
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- $0.00/ kg
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2024-04-24
- CAS:2185-00-4
- Min. Order: 1kg
- Purity: 98%
- Supply Ability: 1T+
- 2,5-OXAZOLIDINEDIONE
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- $6.68 / 1KG
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2020-01-09
- CAS:2185-00-4
- Min. Order: 1KG
- Purity: 97%-99%
- Supply Ability: 1kg-1000kg
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| | 2,5-OXAZOLIDINEDIONE Basic information |
| | 2,5-OXAZOLIDINEDIONE Chemical Properties |
| Melting point | 120 °C (dec.) (lit.) | | density | 1.469±0.06 g/cm3(Predicted) | | storage temp. | -20°C | | pka | 9.32±0.20(Predicted) | | CAS DataBase Reference | 2185-00-4 |
| | 2,5-OXAZOLIDINEDIONE Usage And Synthesis |
| Preparation | Phosgene was passed in a fine stream into a suspension of finely ground glycine (15 g) in dry dioxane (750 mL) at 45–50 ℃ 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 ℃ under exclusion of 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 thus 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. | | Preparation | 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-OXAZOLIDINEDIONE Preparation Products And Raw materials |
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