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CAS RN: 29684-56-8 | 產品號碼: M1279
(Methoxycarbonylsulfamoyl)triethylammonium Hydroxide Inner Salt
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| 產品號碼 | M1279 |
| 純度/分析方法 | >97.0%(N) |
| 分子式 / 分子量 | C__8H__1__8N__2O__4S = 238.30 |
| 外觀與形狀（20°C） | Solid |
| 儲存條件 | Refrigerated (0-10°C) |
| 儲存在惰性氣體下 | Store under inert gas |
| 應避免的情況 | Moisture Sensitive,Heat Sensitive |
| 包裝和容器 | 1G-Glass Bottle with Plastic Insert （閲覽圖片） |
| CAS RN | 29684-56-8 |
| Reaxys-RN | 1432131 |
| PubChem Substance ID | 87573236 |
| Merck Index(14) | 1502 |
| MDL編號 | MFCD00077815 |
產品規格
| Appearance | White to Light yellow to Light orange powder to crystal |
| Purity(with Total Nitrogen) | min. 97.0 % |
| Melting point | 74.0 to 80.0 °C |
| NMR | confirm to structure |
性質
| 熔點 | 79 °C |
GHS
| 圖形表示 |
|
| 信號詞 | Warning |
| 危險性說明 | H315 : Causes skin irritation. H319 : Causes serious eye irritation. |
| 防範說明 | P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ eye protection/ face protection. P302 + P352 : IF ON SKIN: Wash with plenty of water. P337 + P313 : If eye irritation persists: Get medical advice/ attention. P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P362 + P364 : Take off contaminated clothing and wash it before reuse. P332 + P313 : If skin irritation occurs: Get medical advice/ attention. |
相關法規
運輸資料
| HS編碼* | 2929.90-000 |
Application
Preparation of Oxazoline Derivatives Using Burgess Reagent
Typical Procedure:
A solution of dipeptide 1 (56.4 mg, 0.16 mmol) in dry THF (3 mL) is added in a Pyrex tube and flushed with nitrogen. To this solution, Burgess reagent (41.9 mg, 0.176 mmol) is added in small portions and then, the mixture is heated at 70 °C for 0.7-2.5 h until the reaction is completed. After cooling to room temperature, the mixture is evaporated onto silica gel. The resultant residue is purified by column chromatography to give the desired oxazoline derivative 2 (39.6 mg, 74% yield).
A solution of dipeptide 1 (56.4 mg, 0.16 mmol) in dry THF (3 mL) is added in a Pyrex tube and flushed with nitrogen. To this solution, Burgess reagent (41.9 mg, 0.176 mmol) is added in small portions and then, the mixture is heated at 70 °C for 0.7-2.5 h until the reaction is completed. After cooling to room temperature, the mixture is evaporated onto silica gel. The resultant residue is purified by column chromatography to give the desired oxazoline derivative 2 (39.6 mg, 74% yield).
References
Application
Burgess Dehydration Reaction
Typical Procedure:
Burgess reagent (1.3 g, 5.5 mmol) is added to a solution of alcohol 1 (.6 g, 1.8 mmol) in anhydrous THF (4 mL) under N2 atmosphere, and the resulting solution is refluxed for 1 h. The mixture is poured into H2O, then extracted with AcOEt. The organic layer is washed with brine, dried over Na2SO4, and concentrated in vacuo. The residue is purified by SiO2 column chromatography (hexane : AcOEt = 1 : 1) to give the dehydrated product 2 in quantitive yield.
Refereces
- Enantioselective Total Synthesis of a Potent Antitumor Antibiotic, Fredericamycin A.
考研文獻
TCIMail
[TCIMAIL No.160] Organic Syntheses Utilizing the Chemical Properties of Chlorosulfonyl Isocyanate[TCIMAIL No.097] Burgess Reagent
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