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CAS RN: 63212-53-3 | 產品號碼: C0905
2-Chloro-3-ethylbenzoxazolium Tetrafluoroborate
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產品規格
| Appearance | White to Almost white powder to crystal |
| Purity(HPLC) | min. 98.0 area% |
| Purity(with Total Nitrogen) | min. 97.0 % |
| Purity(Argentometric Titration) | min. 97.0 % |
| NMR | confirm to structure |
性質
| 熔點 | 131 °C |
GHS
| 圖形表示 |
|
| 信號詞 | Danger |
| 危險性說明 | H302 : Harmful if swallowed. H314 : Causes severe skin burns and eye damage. |
| 防範說明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P260 : Do not breathe dusts or mists. P270 : Do not eat, drink or smoke when using this product. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P301 + P330 + P331 : IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 : Wash contaminated clothing before reuse. P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth. P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor. P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor. P405 : Store locked up. |
相關法規
運輸資料
| UN編號 | UN1759 |
| 類別 | 8 |
| 包裝類別 | III |
| HS編碼* | 2934.99-000 |
Application
Activating Agent for Hydroxy Groups
Experimental procedure: To a stirred suspension of 2-chloro-3-ethylbenzoxazolium tetrafluoroborate (1.3 mmol) and tetraethylammonium chloride (1.0 mmol) in dichloromethane (2 mL) cooled to 0 °C is added triethylamine (1.3 mmol) in dichloromethane (1 mL) under an argon atmosphere. To the yellow suspension is added dropwise 3β-cholestanol (1.0 mmol) in dichloromethane (1.5 mL) and the resulting mixture is stirred at the same temperature for additional 4 h. After evaporation of the solvent reduced pressure, the residue is directly chromatographed on silica gel eluting with hexane to give 1 in 85% yield.
References
- A NEW SYNTHETIC METHOD FOR THE TRANSFORMATION OF ALCOHOLS TO ALKYL CHLORIDES USING 2-CHLOROBENZOXAZOLIUM SALT
考研文獻
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