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CAS RN: 144026-79-9 | 產品號碼: T1663
Scandium(III) Trifluoromethanesulfonate
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| 產品號碼 | T1663 |
| 純度/分析方法 | >98.0%(T) |
| 分子式 / 分子量 | C__3F__9O__9S__3Sc = 492.15 |
| 外觀與形狀（20°C） | Solid |
| 儲存條件 | Room Temperature (Recommended in a cool and dark place, <15°C) |
| 儲存在惰性氣體下 | Store under inert gas |
| 應避免的情況 | Hygroscopic |
| 包裝和容器 | 1G-Glass Bottle with Plastic Insert （閲覽圖片） |
| CAS RN | 144026-79-9 |
| Reaxys-RN | 8510151 |
| PubChem Substance ID | 87577404 |
| MDL編號 | MFCD00192433 |
產品規格
| Appearance | White to Almost white powder to crystal |
| Purity(Chelometric Titration) | min. 98.0 % |
性質
| 水溶性 | Soluble |
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* | 2846.90-000 |
Application
Acetylation of Alcohols using Acetylating Reagents and Acid Catalysts
References
- 1)A Novel Method for the Preparation of Macrolides from ω-Hydroxycarboxylic Acids
- 2)An Efficient Esterification Reaction between Equimolar Amounts of Free Carboxylic Acids and Alcohols by the Combined Use of Octamethylcyclotetrasiloxane and a Catalytic Amount of Titanium(IV) Chloride Tris(trifluoromethanesulfonate)
- 3)Scandium Trifluoromethanesulfonate as an Extremely Active Lewis Acid Catalyst in Acylation of Alcohols with Acid Anhydrides and Mixed Anhydrides
- 4)Protection for the Hydroxyl Group, Including 1,2- and 1,3-Diols
- P. G. M. Wuts, in Greene’s Protective Groups in Organic Synthesis, 5th ed., ed. by P. G. M. Wuts, John Wiley & Sons, Inc., Hoboken, New Jersey, 2014, Chap. 2, 17.
Application
Stereoinversion of tertiary alcohols to tertiary-alkyl isonitriles
Typical Procedure (entry 1): A solution of (－)-α-bisabolol (22.2 mg, 0.1 mmol) in anhydrous dichloromethane (0.15 mL) is cooled to 0 °C and treated with anhydrous pyridine (31.6 mg, 0.4 mmol), followed by trifluoroacetic anhydride (42 mg, 0.2 mmol). The reaction mixture is stirred at 0 °C for 20 min and quenched with 1 N aqueous HCl. The resulting biphasic mixture is stirred vigorously at room temperature for 5 min and extracted twice with hexanes. The combined organic layers are washed with water followed by saturated aqueous NaHCO3, dried over anhydrous Na2SO4, and concentrated under reduced pressure. The resulting crude trifluoroacetate (32.0 mg, 0.1 mmol) is dissolved in TMSCN (0.1 mL), cooled to 0 °C, and treated drop-wise with a solution of anhydrous Sc(OTf)3 (1.5 mg, 0.003 mmol) in TMSCN (0.1 mL). The reaction mixture is left at 3 °C for 18 h and quenched with tetramethylethylenediamine (7.5 µl, 0.05 mmol). The resulting solution is concentrated under reduced pressure, and the residue is purified by flash column chromatography on silica gel (eluent: 35% dichloromethane in hexanes) to give 7-isocyano-7,8-dihydro-α-bisabolene (18.0 mg, 78% yield, dr 83:17) as a light yellow oil.
References
Application
Reusable Lewis Acid
References
- A novel reusable Lewis acid catalyst in aldol and Michael reactions
- A novel reusable catalyst in Diels-Alder reaction
- A chiral scandium catalyst for enantioselective Diels-Alder reactions
- Aqueous reactions with Lewis acid and organometalic reagent
考研文獻
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