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Merck

939048

Sigma-Aldrich

Lithium bis(trimethylsilyl)amide ChemBeads

new

别名:

Hexamethyldisilazane lithium salt ChemBeads

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About This Item

经验公式(希尔记法):
LiC6H18NSi2
分子量:
167.33
分類程式碼代碼:
12352100

描述

Organic Salt

品質等級

形狀

solid

成份

14-16 wt% loading of base

反應適用性

core: lithium

SMILES 字串

[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 密鑰

YNESATAKKCNGOF-UHFFFAOYSA-N

一般說明

Lithium bis(trimethylsilyl)amide is a non-nucleophilic strong Brønsted base, which is generally soluble in most of the nonpolar organic solvents. It is most commonly employed in organic reactions.

應用

Base employed in generating enolates for the preparation of lactone precursors, pyranones, and cyclohexanes. Used to catalyze the addition of phosphine P-H bonds to carbodiimides leading to phosphaguanidines.[6] Also used in a novel three-step synthesis of disubstituted 1,2,5-thiadiazoles. For general uses, product is also available in powdered form (324620)

特點和優勢

ChemBeads are chemical coated glass beads. ChemBeads offer improved flowability and chemical uniformity perfect for automated solid dispensing and high-throughput experimentation. The method of creating ChemBeads uses no other chemicals or surfactants allowing the user to accurately dispense sub-milligram amounts of chemical.

象形圖

FlameCorrosion

訊號詞

Danger

危險聲明

危險分類

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

安全危害

儲存類別代碼

4.2 - Pyrophoric and self-heating hazardous materials

水污染物質分類(WGK)

WGK 3

閃點(°F)

62.6 °F - closed cup

閃點(°C)

17 °C - closed cup


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ChemBead Enabled High-Throughput Cross-Electrophile Coupling Reveals a New Complementary Ligand
Aguirre A L, et al.
Chemistry (Weinheim An Der Bergstrasse, Germany), 27(51), 12981-12986 (2021)
Structural Studies of Cesium, Lithium/Cesium, and Sodium/Cesium Bis(trimethylsilyl)amide (HMDS) Complexes
Ojeda-Amador A I, et al.
Inorganic Chemistry, 55(11), 5719-5728 (2016)
Alkali-metal-catalyzed addition of primary and secondary phosphines to carbodiimides. A general and efficient route to substituted phosphaguanidines
Zhang W X, et al.
Chemical Communications (Cambridge, England), 3812-4, 36-36 (2006)
High-Throughput Reaction Screening with Nanomoles of Solid Reagents Coated on Glass Beads
Tu N P, et al.
Angewandte Chemie (International Edition in English), 58(24), 7987-7991 (2019)
Tatsuya Nitabaru et al.
Journal of the American Chemical Society, 131(38), 13860-13869 (2009-09-10)
Full details of an anti-selective catalytic asymmetric nitroaldol reaction promoted by a heterobimetallic catalyst comprised of Nd(5)O(O(i)Pr)(13), an amide-based ligand, and NaHMDS (sodium hexamethyldisilazide) are described. A systematic synthesis and evaluation of amide-based ligands led to the identification of optimum

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