221775

Kupfer(II)-bromid

99%

• Synonym(e): brominating agent, Cupric bromide
• Lineare Formel: CuBr₂
• CAS-Nummer: 7789-45-9
• Molekulargewicht: 223.35
• EG-Nummer: 232-167-2
• MDL-Nummer: MFCD00010970
• UNSPSC-Code: 12161600
• eCl@ss: 38150112
• PubChem Substanz-ID: 24853260
• NACRES: NA.22

Eigenschaften

• Assay: 99%
• Form: solid
• Eignung der Reaktion: core: copper; reagent type: catalyst
• mp (Schmelzpunkt): 498 °C (lit.)
• Dichte: 4.77 g/mL at 25 °C (lit.)
• SMILES String: Br[Cu]Br
• InChI: 1S/2BrH.Cu/h2*1H;/q;;+2/p-2
• InChIKey: QTMDXZNDVAMKGV-UHFFFAOYSA-L

Beschreibung

Allgemeine Beschreibung

Cuprous bromide may be prepared by the reduction of cupric bromide or CuSO₄-NaBr. In the molten state, it is grayish brown /greenish brown in color.

Anwendung

Some reported applications of copper bromide are:

• catalyst in cross coupling reactions.
• co-catalyst in Sonogashira coupling.
• Lewis acid in enantioselective addition of alkynes.
• reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.

Reductive homocoupling of α-bromo- α- chlorocarboxylates to dimethyl α, α′ dichlorosuccinate derivatives in presence of CuBr/LiOCH₃ in methanol has been reported.

Sicherheitshinweise

• Piktogramme: GHS05,GHS07,GHS09
• Signalwort: Danger
• H-Sätze: H302,H314,H410
• P-Sätze: P260 - P273 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Gefahreneinstufungen: Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1B
• Lagerklassenschlüssel: 8A - Combustible corrosive hazardous materials
• WGK: WGK 3
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges