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221775

Sigma-Aldrich

Copper(II) bromide

99%

Sinonimo/i:

brominating agent, Cupric bromide

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About This Item

Formula condensata:
CuBr2
Numero CAS:
7789-45-9
Peso molecolare:
223.35
Numero CE:
232-167-2
Numero MDL:
MFCD00010970
Codice UNSPSC:
12161600
eCl@ss:
38150112
ID PubChem:
24853260
NACRES:
NA.22

Livello qualitativo

200

Saggio

99%

Forma fisica

solid

Impiego in reazioni chimiche

core: copper
reagent type: catalyst

Punto di fusione

498 °C (lit.)

Densità

4.77 g/mL at 25 °C (lit.)

Stringa SMILE

Br[Cu]Br

InChI

1S/2BrH.Cu/h2*1H;/q;;+2/p-2
QTMDXZNDVAMKGV-UHFFFAOYSA-L

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Descrizione generale

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.

Applicazioni

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.

Prodotti correlati

N° Catalogo
Descrizione
Determinazione del prezzo

909424

Cu(OTs)2, ≥95%

Avvertenze

Danger

Indicazioni di pericolo

H302,H314,H410

Classi di pericolo

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1B

Codice della classe di stoccaggio

8A - Combustible corrosive hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 3

Dispositivi di protezione individuale

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificati d'analisi (COA)

Lot/Batch Number
WXBD6808V
WXBD4049V
WXBD1684
WXBC9865V
WXBC9122V

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Jian Wang et al.
Macromolecular rapid communications, 40(2), e1800332-e1800332 (2018-06-28)
Polymerization-induced self-assembly (PISA) and in situ crosslinking of the formed nanoparticles are successfully realized by activators regenerated by electron-transfer atom transfer radical polymerization (ARGET ATRP) of glycidyl methacrylate (GMA) or a mixture of GMA/benzyl methacrylate (BnMA) monomers in ethanol. Poly(oligo(ethylene
Synthesis, 1535-1535 (2007)
Denissova I and Barriault L
Handbook of Reagents for Organic Synthesis null
Lu-Ying Han et al.
Pharmaceutics, 11(2) (2019-01-30)
Icariin (ICA) is a major flavonoid that contains the active compound Epimedii Folium. However, ICA's pharmacokinetic characteristics remain unsatisfactory due to its low bioavailability, and hence limited drugability. In order to improve its pharmacokinetics and achieve prolonged blood circulation time
Yu Wang
Polymers, 11(8) (2019-07-31)
Atom transfer radical polymerization (ATRP) of methyl acrylate (MA) was carried out by continuous feeding of Cu(I) activators. Typically, the solvent, the monomer, the initiator, and the CuBr2/Me6TREN deactivator are placed in a Schlenk flask (Me6TREN: tris[2-(dimethylamino)ethyl]amine), while the CuBr/Me6TREN
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