198323
Cesium fluoride
99%
Synonym(s):
NSC 84270
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About This Item
Empirical Formula (Hill Notation):
CsF
CAS Number:
Molecular Weight:
151.90
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
236-487-3
MDL number:
Assay:
99%
Form:
liquid
Quality Level
assay
99%
form
liquid
mp
682 °C (lit.)
density
4.115 g/mL at 25 °C (lit.)
SMILES string
[F-].[Cs+]
InChI
1S/Cs.FH/h;1H/q+1;/p-1
InChI key
XJHCXCQVJFPJIK-UHFFFAOYSA-M
General description
Cesium fluoride is an inorganic compound known to be a source of fluoride ion and a catalyst in organic synthesis. It has been used in many organic reactions like 1,4−elimination, desilylation, transesterification, acylation, nucleophilic aromatic substitution, etherification, cross−coupling reactions and so on.
Application
Cesium fluoride can be used as:
- A base in the Suzuki cross-coupling synthesis of ortho-substituted biaryls.
- A reagent for the nucleophilic fluorination of primary halides and sulfonates in protic media such as tert-butyl and tert-pentyl alcohols.
Reactant for:
- Preparation of building blocks for synthesis of fluoroallylic compounds
- Synthesis of alcohols via hydrolysis of alkyl silyl ethers at neutral pH in buffered mixed organic-aqueous solutions
- Nucleophilic fluorination of alkynyliodonium salts to form fluorovinylic compounds
- Nucleophilic aromatic substitution (SNAr) reactions
Used in the successful synthesis of a single-crystal Dion-Jacobson phase, CsLaTa2O7, that has applications in photocatalysis and superconductivity.
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signalword
Danger
Hazard Classifications
Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Repr. 2 - STOT RE 2
target_organs
Kidney,Adrenal gland
supp_hazards
Storage Class
13 - Non Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Regulatory Information
危险化学品
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A new class of SN2 reactions catalyzed by protic solvents: facile fluorination for isotopic labeling of diagnostic molecules
Kim DW, et al.
Journal of the American Chemical Society, 128(50), 16394-16397 (2006)
A cesium fluoride promoted efficient and rapid multicomponent synthesis of functionalized 2-amino-3-cyano-4H-pyran and spirooxindole derivatives
Wagh YB, et al.
Chinese Chemical Letters = Zhongguo Hua Xue Kuai Bao, 26(10), 1273-1277 (2015)
Cesium Fluoride
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2007)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 198323-100G | 04061838762832 |
| 198323-25G | 04061838762849 |