694037

Cesium pivalate

98%

• Synonim(y): Cesium 2,2-dimethylpropanoate, Cesium trimethylacetate
• Wzór empiryczny (zapis Hilla): C₅H₉O₂Cs
• Numer CAS: 20442-70-0
• Masa cząsteczkowa: 234.03
• NACRES: NA.22
• PubChem Substance ID: 329761643
• UNSPSC Code: 12352302
• MDL number: MFCD10567040
• Assay: 98%
• Form: powder

Właściwości

• Quality Segment: 100
• 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

Opis

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.

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Informacja o środkach bezpieczeństwa

• Piktogramy: GHS07
• Słowo ostrzegawcze: Warning
• Kody zagrożeń: H315,H319,H335
• Ostrzeżenia: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Narządy docelowe: Respiratory system
• Klasa składowania: 11 - Combustible Solids
• Co się dzieje?: WGK 3
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable
• PPE (środki ochrony indywidualnej): dust mask type N95 (US), Eyeshields, Gloves