跳转至内容
Merck

324620

Sigma-Aldrich

双三甲基硅基胺基锂

97%

别名:

六甲基二硅氮烷 锂盐

登录查看公司和协议定价


About This Item

线性分子式:
[(CH3)3Si]2NLi
CAS号:
分子量:
167.33
EC 号:
MDL编号:
UNSPSC代码:
12352111
PubChem化学物质编号:
NACRES:
NA.22
价格与库存信息目前不能提供

方案

97%

表单

solid

pH值(酸碱度)

(12.4 at 23,7 °C)

沸点

110-115 °C (at 1.33 hPa)

mp

70-71 °C

密度

0.860 g/mL at 25 °C (lit.)

SMILES字符串

[Li]N([Si](C)(C)C)[Si](C)(C)C

InChI

1S/C6H18NSi2.Li/c1-8(2,3)7-9(4,5)6;/h1-6H3;/q-1;+1

InChI key

YNESATAKKCNGOF-UHFFFAOYSA-N

正在寻找类似产品? 访问 产品对比指南

一般描述

双三甲基硅基胺基锂是非亲核性的强布朗斯特(Brønsted)碱,通常可溶于大多数非极性有机溶剂。最常用于有机反应。[1][2]

应用

生成烯醇盐类化合物(用于制备内酯前体、[3] 吡喃酮类化合物[4] 和环己烷类化合物)的碱。[5]
用于催化膦的 P-H 键加成到碳二亚胺上生成磷杂胍的反应。[6]还用于二取代 1,2,5-噻二唑的新型三步法合成。[7]

象形图

FlameCorrosion

警示用语:

Danger

危险声明

危险分类

Eye Dam. 1 - Flam. Sol. 1 - Self-heat. 1 - Skin Corr. 1B

补充剂危害

储存分类代码

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 2

闪点(°F)

62.6 °F - closed cup

闪点(°C)

17 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

没有发现合适的版本?

如果您需要特殊版本,可通过批号或批次号查找具体证书。

已有该产品?

在文件库中查找您最近购买产品的文档。

访问文档库

Lithium Bis(trimethylsilyl)amide and Tris(trimethylsilyl)amine
Inorganic Syntheses (1966)
Wen-Xiong Zhang et al.
Chemical communications (Cambridge, England), (36), 3812-3814 (2006-09-14)
Organo alkali metal compounds such as (n)BuLi and (Me3Si)2NK act as excellent catalyst precursors for the addition of phosphine P-H bonds to carbodiimides, offering a general and atom-economical route to substituted phosphaguanidines, with excellent tolerability to aromatic C-Br and C-Cl
The Journal of Organic Chemistry, 58, 7304-7304 (1993)
Synlett, 507-507 (1993)
Tetrahedron, 50, 9061-9061 (1994)

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

Reviews

No rating value

Active Filters

我们的科学家团队拥有各种研究领域经验,包括生命科学、材料科学、化学合成、色谱、分析及许多其他领域.

联系客户支持