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CAS RN: 4568-71-2 | 產品號碼: B1224
3-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium Chloride
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| 產品號碼 | B1224 |
| 純度/分析方法 | >98.0%(T)(HPLC) |
| 分子式 / 分子量 | C__1__3H__1__6ClNOS = 269.79 |
| 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 |
| CAS RN | 4568-71-2 |
| Reaxys-RN | 3788921 |
| PubChem Substance ID | 87564160 |
| SDBS (AIST Spectral DB) | 18321 |
| MDL編號 | MFCD00011959 |
產品規格
| Appearance | White to Light yellow powder to crystal |
| Purity(HPLC) | min. 98.0 area% |
| Purity(Nonaqueous Titration) | min. 98.0 % |
| Melting point | 142.0 to 145.0 °C |
性質
| 熔點 | 143 °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* | 2934.10-000 |
Application
Acyloin Condensation of Aliphatic Aldehydes Using Thiazolinium Ion Catalyst
Typical procedure:
A 500 mL, three-necked round-bottomed flask is charged with 3-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium Chloride (13.4 g, 0.05 mol), butyraldehyde (72.1 g, 1.0 mol), triethylamine (30.3 g, 0.3 mol), and absolute ethanol (300 mL). The mixture is stirred and heated at 80°C. After 1.5 h the reaction mixture is cooled to room temperature and concentrated by rotary evaporation. The residual yellow liquid is poured into 500 mL of water and extracted with 150 mL of dichloromethane. The aqueous layer is extracted with a second 150 mL portion of dichloromethane. The combined organic phases are washed with 300 mL of saturated sodium bicarbonate and with 300 mL of water. The dichloromethane is removed by rotary evaporation. Distillation through a 20 cm Vigreux column gives 51–54 g (71–74%) of product as a colorless to light-yellow liquid.
A 500 mL, three-necked round-bottomed flask is charged with 3-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium Chloride (13.4 g, 0.05 mol), butyraldehyde (72.1 g, 1.0 mol), triethylamine (30.3 g, 0.3 mol), and absolute ethanol (300 mL). The mixture is stirred and heated at 80°C. After 1.5 h the reaction mixture is cooled to room temperature and concentrated by rotary evaporation. The residual yellow liquid is poured into 500 mL of water and extracted with 150 mL of dichloromethane. The aqueous layer is extracted with a second 150 mL portion of dichloromethane. The combined organic phases are washed with 300 mL of saturated sodium bicarbonate and with 300 mL of water. The dichloromethane is removed by rotary evaporation. Distillation through a 20 cm Vigreux column gives 51–54 g (71–74%) of product as a colorless to light-yellow liquid.
References
Application
Useful N-Heterocyclic Carbene Precursor for Diastereoselective Cyclization Reaction
References
考研文獻
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