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Merck
CN

457701

Sigma-Aldrich

(S)-(-)-2-甲基-CBS-噁唑硼烷 溶液

1 M in toluene

别名:

α,α-二苯基-L-脯氨醇甲基硼酸环胺酯, (S)-1-甲基-3,3-二苯基-四氢-吡咯并[1,2c][1,3,2]噁唑硼烷, (S)-3,3-二苯基-1-甲基四氢-3H-吡咯并[1,2-c][1,3,2]噁唑硼烷, (S)-四氢-1-甲基-3,3-二苯基-1H,3H-吡咯并[1,2-c][1,3,2]噁唑硼烷

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About This Item

经验公式(希尔记法):
C18H20BNO
分子量:
277.17
MDL编号:
UNSPSC代码:
12352005
PubChem化学物质编号:
NACRES:
NA.22

质量水平

浓度

1 M in toluene

沸点

111 °C

密度

0.929 g/mL at 25 °C

官能团

phenyl

储存温度

room temp

SMILES字符串

CB1OC([C@@H]2CCCN12)(c3ccccc3)c4ccccc4

InChI

1S/C18H20BNO/c1-19-20-14-8-13-17(20)18(21-19,15-9-4-2-5-10-15)16-11-6-3-7-12-16/h2-7,9-12,17H,8,13-14H2,1H3/t17-/m0/s1

InChI key

VMKAFJQFKBASMU-KRWDZBQOSA-N

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应用

CBS (Corey-Bakshi-Shibata) 噁唑硼烷催化剂已被用于前手性酮的非对称性还原。其他应用包括 α-羟基酸、α-氨基酸、C2 对称二茂铁二醇以及炔丙醇的对映选择性合成。
用于 (S)-2-氨基-1-苯乙醇的对映选择性合成的催化剂。
用于非对称性还原反应的优良催化剂。
(S)-(-)-2-Methyl-CBS-oxazaborolidine solution [1M in toluene] may be used as a catalyst in the multi-step synthesis of (-)-diospongin A.
It may also be used in the preparation of:
  • (1S)-2-azido-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)ethanol
  • (R)-α-deuteriobenzyl alcohol
  • (R)-2-(1-hydroxyethyl)benzo[b]thiophene

其他说明

储存时可能形成沉淀,但不影响产品质量。在惰性气体环境下将产品缓慢加热至 80-90°C,使固体再溶解。

警示用语:

Danger

危险分类

Acute Tox. 4 Oral - Aquatic Chronic 3 - Asp. Tox. 1 - Eye Dam. 1 - Flam. Liq. 2 - Repr. 2 - Skin Irrit. 2 - STOT RE 2 - STOT SE 3

靶器官

Central nervous system

储存分类代码

3 - Flammable liquids

WGK

WGK 3

闪点(°F)

39.2 °F - closed cup

闪点(°C)

4 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

法规信息

新产品

从最新的版本中选择一种:

分析证书(COA)

Lot/Batch Number

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访问文档库

Enantioselective synthesis of (S)-salmeterol via asymmetric reduction of azidoketone by Pichia angusta.
Procopiou PA, et al.
Tetrahedron Asymmetry, 12(14), 2005-2008 (2001)
Organic Process Research & Development, 10, 893-893 (2006)
Singh, V. K.
Synthesis, 605-605 (1992)
Bis (oxazoline)-ligand-mediated asymmetric [2, 3]-Wittig rearrangement of benzyl ethers: reaction mechanism based on the hydrogen/deuterium exchange effect.
Kitamura M, et al.
Tetrahedron, 68(22), 4280-4285 (2012)
Diastereoselective photochromism of a bisbenzothienylethene governed by steric as well as electronic interactions.
Yokoyama Y, et al.
Journal of the American Chemical Society, 125(24), 7194-7195 (2003)

商品

we are pleased to offer both enatiomers of 2-methyl-CBS-oxazaborolidine as a dry reagent, in addition to our current offerings as a 1M solution in toluene.

Learn about the applications of chiral oxazaborolidinium ions (COBIs) as Lewis acid catalysts in different asymmetric reactions such as cyclopropanation, epoxidation, and radical reactions along with details of their catalytic action.

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