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694037

Cesium pivalate

98%

Synonym(s):

Cesium 2,2-dimethylpropanoate, Cesium trimethylacetate

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About This Item

Empirical Formula (Hill Notation):
C5H9O2Cs
CAS Number:
20442-70-0
Molecular Weight:
234.03
NACRES:
NA.22
PubChem Substance ID:
329761643
UNSPSC Code:
12352302
MDL number:
MFCD10567040
Assay:
98%
Form:
powder
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Quality Segment

assay

98%

form

powder

reaction suitability

core: Cesium

mp

344-348 °C

SMILES string

[Cs+].CC(C)(C)C([O-])=O

InChI

1S/C5H10O2.Cs/c1-5(2,3)4(6)7;/h1-3H3,(H,6,7);/q;+1/p-1

InChI key

LGVUAXNPXVXCCW-UHFFFAOYSA-M

General description

Cesium pivalate is an organic base widely used in palladium-catalyzed cross-coupling and carbonylation reactions due to its solubility in organic solvents.

Application

Cesium pivalate can be used as a base to synthesize:
  • Fluoren-9-one derivatives by cyclocarbonylation of o-halobiaryls in the presence of palladium catalyst.
  • Fused heterocycles (dihydrobenzofurans and indolines) from o-bromo phenol and aniline precursors via Pd-catalyzed intramolecular coupling of two C(sp3)-H bonds.
  • Amides and esters derivatives containing a quaternary β-carbon atom by Pd-catalyzed C-H activation and amino/alkoxycarbonylation reaction.
It can also be used as a base in the palladium-catalyzed Mizoroki-Heck reaction.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Codes

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

dust mask type N95 (US), Eyeshields, Gloves

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