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CAS RN: 185990-03-8 | 产品编码: D4357
2-(Dimethylphenylsilyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
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* 无具体发货日期的情况，如：显示“8个工作日后发货”，将在您订购日起的8个工作日后发货。
* 我们将以最优方式从上海/天津两大仓库发货。国内库存不足，需两周左右向日本总部调货。
* 对于可分装产品，11:30前的订单，当天发货；11:30后的订单，隔天发货。
* 如需大包装，请点击“大包装询价”按钮（对于某些产品我们无法提供大包装）。
* TCI会经常复审储藏条件以对其进行优化，请以在线目录为准，敬请留意。
* 更多信息，请联系营业部：021-67121386 / Sales-CN@TCIchemicals.com 。任何货期、规格或包装方面的需求，请联系我们 。
技术规格
| Appearance | Colorless to Light yellow to Light orange clear liquid |
| Purity(GC) | min. 95.0 % |
物性（参考值）
| 沸点 | 120 °C/0.08 mmHg |
| 比重 | 0.97 |
| 折射率 | 1.50 |
GHS
相关法规
| 新化学物质备案回执号 | B1A232215504 |
运输信息
| 监管条件代码(*) |
应用
Transition Metal-free Borylation
A Representative procedure for the boryl substitution reaction of aryl halide:
To a vial sealed with a screw cap containing a silicon-coated rubber septum is added potassium methoxide (0.6 mmol) under argon. It is connected to a vacuum/nitrogen manifold through a needle. DME (5 mL) and 1 (0.36 mmol) are added to the vial, then stirred for 10 min at 30 °C. 4-Bromoanisole (0.50 mmol) is added dropwise and stirred for 1 h. The solution is cooled to 0 °C followed by the addition of TBAF (1.0 M, 800 µL). The resultant solution is stirred for 3 h at 0 °C. After that, the mixture is added to the H2O (100 mL), then extracted with Et2O (50 mL). The organic layer is washed with water (50 mL x 2). The combined organic layer is then dried over MgSO4 followed by evaporation. The crude product is purified by boric acid-impregnated silica-gel column chromatography with 0–5% hexane/Et2O eluent to give the desired product (77% isolated yield) as a colorless oil.
To a vial sealed with a screw cap containing a silicon-coated rubber septum is added potassium methoxide (0.6 mmol) under argon. It is connected to a vacuum/nitrogen manifold through a needle. DME (5 mL) and 1 (0.36 mmol) are added to the vial, then stirred for 10 min at 30 °C. 4-Bromoanisole (0.50 mmol) is added dropwise and stirred for 1 h. The solution is cooled to 0 °C followed by the addition of TBAF (1.0 M, 800 µL). The resultant solution is stirred for 3 h at 0 °C. After that, the mixture is added to the H2O (100 mL), then extracted with Et2O (50 mL). The organic layer is washed with water (50 mL x 2). The combined organic layer is then dried over MgSO4 followed by evaporation. The crude product is purified by boric acid-impregnated silica-gel column chromatography with 0–5% hexane/Et2O eluent to give the desired product (77% isolated yield) as a colorless oil.
References
- Anomalous Reactivity of Silylborane: Transition-Metal-Free Boryl Substitution of Aryl, Alkenyl, and Alkyl Halides with Silylborane/Alkoxy Base Systems
PubMed Literature
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