02128

Sigma-Aldrich

Zinc bromide

puriss., anhydrous, ≥98%

Synonym(s):
Zinc dibromide
Linear Formula:
ZnBr2
CAS Number:
Molecular Weight:
225.20
EC Number:
MDL number:
eCl@ss:
38150410
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level

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

Hazard Codes

C,N

Risk Statement

22-34-43-51/53

Safety Statement

26-36/37/39-45-60

RIDADR

UN3260 - class 8 - PG 3 - MP - RQ - Corrosive solid, acidic, inorganic, n.o.s., HI: all

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
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)
Direct synthesis of alkynylstannanes: ZnBr2 catalyst for the reaction of tributyltin methoxide and terminal alkynes.
Kensuke Kiyokawa et al.
Angewandte Chemie (International ed. in English), 50(44), 10393-10396 (2011-09-15)

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