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02128

Sigma-Aldrich

Zinc bromide

puriss., anhydrous, ≥98%

Synonym(s):

Zinc dibromide

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About This Item

Linear Formula:
ZnBr2
CAS Number:
7699-45-8
Molecular Weight:
225.20
EC Number:
231-718-4
MDL number:
MFCD00011294
UNSPSC Code:
12352302
eCl@ss:
38150410
PubChem Substance ID:
329747390

grade

puriss.

Assay

≥98%

reaction suitability

reagent type: catalyst
core: zinc

mp

394 °C (lit.)

anion traces

sulfate (SO42-): ≤100 mg/kg

cation traces

Ba: ≤10 mg/kg
Ca: ≤100 mg/kg
Fe: ≤10 mg/kg
K: ≤100 mg/kg
Mg: ≤100 mg/kg
Na: ≤100 mg/kg
Pb: ≤50 mg/kg

SMILES string

Br[Zn]Br

InChI

1S/2BrH.Zn/h2*1H;/q;;+2/p-2

InChI key

VNDYJBBGRKZCSX-UHFFFAOYSA-L

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General description

Zinc bromide is an inorganic salt. Zinc bromide supported on hydroxyapatite (Zn-HAP) promotes the synthesis of 3-substituted indoles.

Application

Zinc bromide (ZnBr2) may be used for the following studies:
  • Removal of dimethoxytrityl ethers from deoxynucleosides.
  • Removal of N-acyl protecting group in nucleoside derivatives.
  • Alkylation of O-silylated dienolates of unsaturated ketones and esters.
  • As catalyst in the synthesis of α-perfluoroalkylated homoallylic alcohols.

Signal Word

Danger

Hazard Statements

H302,H314,H317,H411

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The use of zinc bromide for removal of dimethoxytrityl ethers from deoxynucleosides.
Matteucci MD and Caruthers MH.
Tetrahedron Letters, 31(34), 3243-3246 (1984)
Zinc bromide promoted allylation of aluminum acetals derived from perfluoro carboxylic acid esters and diisobutylaluminum hydride. New convenient access to a-perfluoroalkylated homoallyl alcohols.
Ishihara T, et al.
Tetrahedron Letters, 34(36), 5777-5777 (1993)
γ-Alkylation of unsaturated ketones and esters: zinc bromide-catalysed alkylation of O-silylated dienolates.
Fleming I, et al.
Tetrahedron Letters, 20(34), 3209-3212 (1979)
Zinc bromide supported on hydroxyapatite as a new and efficient solid catalyst for Michael addition of indoles to electron-deficient olefins.
Tahir R, et al.
J. Mol. Catal. A: Chem., 246(1), 39-42 (2006)
Frederic G Buono et al.
Organic letters, 10(23), 5325-5328 (2008-11-05)
Kinetic studies using reaction calorimetry were conducted under synthetically relevant conditions to study the effect of additives in the cyanation of bromobenzene catalyzed by palladium complexes. This work demonstrates that the addition of a catalytic amount of ZnBr(2) facilitates the
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