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CAS RN: 25015-63-8 | 产品编码: T2572
4,4,5,5-Tetramethyl-1,3,2-dioxaborolane
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| 产品编码 | T2572 |
| 纯度/分析方法 | >97.0%(GC)(T) |
| 分子式/分子量 | C__6H__1__3BO__2 = 127.98 |
| 外观与形状（20°C） | 液体 |
| 储存温度 | 冷藏 (0-10°C) |
| 储存在惰性气体下 | 存放于惰性气体之中 |
| 应避免的情况 | 湿气 (分解),加热 |
| 包装和容器 | 25G-DualSeal Bottle （查看图片） |
| CAS RN | 25015-63-8 |
| Reaxys-RN | 7802871 |
| PubChem物质ID | 87560970 |
| MDL编号 | MFCD00674030 |
技术规格
| Appearance | Colorless to Almost colorless clear liquid |
| Purity(GC) | min. 97.0 % |
| Purity(Neutralization titration) | min. 97.0 % |
| NMR | confirm to structure |
物性（参考值）
| 沸点 | 43 °C/50 mmHg |
| 闪点 | 5 °C |
| 比重 | 0.89 |
| 折射率 | 1.40 |
GHS
| 象形图 |
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| 信号词 | Danger |
| 危险性说明 | H225 : Highly flammable liquid and vapor. H261 : In contact with water releases flammable gas. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P223 : Do not allow contact with water. P240 : Ground/bond container and receiving equipment. P231 + P232 : Handle under inert gas. Protect from moisture. P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking. P233 : Keep container tightly closed. P243 : Take precautionary measures against static discharge. P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment. P242 : Use only non-sparking tools. P280 : Wear protective gloves/ eye protection/ face protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P335 + P334 : Brush off loose particles from skin. Immerse in cool water/ wrap in wet bandages. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P402 + P404 : Store in a dry place. Store in a closed container. P403 + P235 : Store in a well-ventilated place. Keep cool. |
相关法规
运输信息
| UN编号 | UN3399 |
| 类别 | 4.3 / 3 |
| 包装类别 | II |
| HS编码* | 2934.99-000 |
应用
Borylation of Triflate with Pinacolborane
Typical procedure: To a degassed solution of L-tyrosine triflate derivative (500 mg, 1.17 mmol) and NMM (0.129 mL, 1.17 mmol) in dioxane (5 mL) is added PdCl2(dppf).CH2Cl2 (4.8 mg, 0.0059 mmol) and pinacolborane (0.255 mL, 1.76 mmol) at room temperature. The reaction mixture is then stirred for 24 h at 80 ℃. After cooling to room temperature, the mixture is concentrated and directly purified by silica gel column chromatography (heptane : ethyl acetate = 3 : 1) to give the borylation product as a colorless viscous oil (445 mg, 94% yield).
References
参考文献