轻松扫码查看产品文档 | TCIMAIL No.197 已上新 | TCI试剂——品质可靠,值得信赖
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CAS RN: 112022-83-0 | 产品编码: D2130
(R)-5,5-Diphenyl-2-methyl-3,4-propano-1,3,2-oxazaborolidine

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* 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 。
* 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 。
产品编码 | D2130 |
纯度/分析方法 | >97.0%(T) |
分子式/分子量 | C__1__8H__2__0BNO = 277.17 |
外观与形状(20°C) | 固体 |
储存温度 | 冷冻 (<0°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 | 1G-带有塑料内管的玻璃瓶 (查看图片) |
CAS RN | 112022-83-0 |
Reaxys-RN | 9059874 |
PubChem物质ID | 87568574 |
MDL编号 | MFCD00078440 |
技术规格
Appearance | White to Almost white powder to crystal |
Purity(Nonaqueous Titration) | min. 97.0 % |
Specific rotation [a]20/D | +68.0 to +75.0 deg(C=1, MeOH) |
NMR | confirm to structure |
物性(参考值)
比旋光度 [α]D | 68° (C=1,MeOH) |
GHS
相关法规
运输信息
监管条件代码(*) |
应用
Asymmetric Reduction Using CBS Catalyst
Experimental procedure5): To a solution of 1 (3.52 g, 10.8 mmol) in toluene (85 mL) is added (R)-CBS-Me catalyst (1 mol/L in toluene, 4.30 mL, 4.30 mmol) and the solution is cooled to -78 °C. A solution of catecholborane (3.44 mL, 32.3 mmol) in toluene (20 mL) is added dropwise over 30 minutes. After stirring for 6 hours at -78 °C, water (40 mL) is added and the reaction is allowed to warm to rt. The reaction mixture is poured on water (150 mL) and extracted with Et2O (3 x 125 mL). The combined organic layers are washed with 1 mol/L NaOH (2 x 100 mL), saturated NaCl (100 mL), dried over MgSO4, and concentrated under vacuum. The crude product is purified by flash chromatography (hexanes:EtOAc = 4:1) to provide 3.00 g (85% yield, 98% ee) of 2 as a clear oil.
References
- 1)Highly enantioselective borane reduction of ketones catalyzed by chiral oxazaborolidines. Mechanism and synthetic implications
- 2)A stable and easily prepared catalyst for the enantioselective reduction of ketones. Applications to multistep syntheses
- 3)Enantioselective route to a key intermediate in the total synthesis of ginkgolide B
- 4)Total synthesis of (±)-forskolin
- 5)Total Synthesis of (+)-Lyconadin A and Related Compounds via Oxidative C-N Bond Formation
参考文献