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CAS RN: 814-29-9 | 产品编码: T0921
Tributylphosphine Oxide
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| 规格 | 单价 | 同一天 | 2-3个工作日 | 数量 |
|---|---|---|---|---|
| 25G |
S$135.00
|
35 | 5 |
|
技术规格
| Appearance | White to Almost white powder to crystal |
| Purity(GC) | min. 95.0 % |
物性（参考值）
| 熔点 | 71 °C |
| 溶解性（可溶于） | 甲醇 |
GHS
| 象形图 |
|
| 信号词 | Danger |
| 危险性说明 | H302 + H312 + H332 : Harmful if swallowed, in contact with skin or if inhaled. H314 : Causes severe skin burns and eye damage. |
| 防范说明 | 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. P271 : Use only outdoors or in a well-ventilated area. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection. P362 + P364 : Take off contaminated clothing and wash it before reuse. 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. 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. |
相关法规
| RTECS# | SZ1575000 |
运输信息
| UN编号 | UN1759 |
| 类别 | 8 |
| 包装类别 | III |
| HS编码* | 2931.49-900 |
应用
TCI Practical Example: Regioselective Silylation of an Unprotected Carbohydrate Using the Boronic Acid and the Phosphine Oxide
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Used Chemicals
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Procedure
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To a solution of methyl α-L-fucopyranoside (356 mg, 2 mmol), 4-(dimethylamino)phenylboronic acid (66 mg, 0.4 mmol, 0.2 equiv), tributylphosphine oxide (87 mg, 0.2 mmol, 0.2 equiv) and DIPEA (517 mg, 0.68 mL, 4.0 mmol, 2.0 equiv) in acetonitrile (10 mL) was added TBDPSCl (1.10 g, 1.03 mL, 4.0 mmol, 2.0 equiv) at rt and the mixture was stirred at 60 °C. After 24 h, methanol (1 mL) was added to the reaction mixture and the solvent was removed under reduced pressure. The residue was purified by column chromatography (ethyl acetate:hexane = 0:1 - 1:1 on silica gel) to give 1 as a colorless oil (510 mg，y. 61%).
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Experimenter’s Comments
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The reaction mixture was monitored by TLC (ethyl acetate:hexane = 1:1, Rf = 0.59).
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Analytical Data
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Compound 1
1H NMR (400 MHz, CDCl3); δ 7.75-7.67 (m, 4H), 7.48-7.36 (m, 6H), 4.68 (d, 1H, J = 3.2 Hz), 3.93-3.80 (m, 2H), 3.68 (brq, 1H, J = 6.5 Hz), 3.44-3.43 (m, 1H), 3.29 (s, 3H), 2.55 (brs, 1H), 1.53 (d, 1H, J = 8.9 Hz), 1.22 (d, 3H, J = 6.8 Hz), 1.10 (s, 9H).
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Lead Reference
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- Regioselective silylation of pyranosides using a boronic acid / Lewis base co-catalyst system
参考文献
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