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213225

Sigma-Aldrich

Lithium bromide

ReagentPlus®, ≥99%

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About This Item

Linear Formula:
LiBr
CAS Number:
7550-35-8
Molecular Weight:
86.85
EC Number:
231-439-8
MDL number:
MFCD00011077
UNSPSC Code:
12352302
PubChem Substance ID:
329752141
NACRES:
NA.21

vapor pressure

1 hPa ( 748 °C)

product line

ReagentPlus®

Assay

≥99%

form

powder

pH

7 (20 °C, 10 g/L)

mp

550 °C (lit.)

SMILES string

[Li+].[Br-]

InChI

1S/BrH.Li/h1H;/q;+1/p-1

InChI key

AMXOYNBUYSYVKV-UHFFFAOYSA-M

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General description

LiBr/Chlorotrimethylsilane reagent participates in the conversion of alcohols to bromides.

Application

Lithium bromide (LiBr) may be employed as a catalyst in the following studies:
  • Transformation of (aromatic- and α,β-unsaturated) aldehydes to dithioacetals via solvent-free dithioacetalization.
  • Synthesis of olefins via condensation reaction of carbonyl compounds with active methylene compounds.
  • Green synthesis of β-amino alcohols.
  • Chemo- and regioselective bromination of aromatic compounds was carried out by employing LiBr/ceric ammonium nitrate (CAN) reagent system (as a source of Br+ ion).

Other Notes

Go to Redi-Dri™ Product Listing 746479

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H315,H317,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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An efficient chemo and regioselective oxidative nuclear bromination of activated aromatic compounds using lithium bromide and ceric ammonium nitrate.
Roy SC, et al.
Tetrahedron Letters, 42(39), 6941-6942 (2001)
Lithium Bromide, an Inexpensive and Efficient Catalyst for Opening of Epoxide Rings by Amines at Room Temperature under Solvent-Free Condition.
Chakraborti AK, et al.
European Journal of Organic Chemistry, 2004(17), 3597-3600 (2004)
Lithium bromide-catalyzed highly chemoselective and efficient dithioacetalization of α,β-unsaturated and aromatic aldehydes under solvent-free conditions.
Firouzabadi H, et al.
Synthesis, 58-60 (1999)
Lithium bromide as a new catalyst for carbon-carbon bond formation in the solid state.
Prajapati D, et al.
Journal of the Chemical Society. Perkin Transactions 1, 9, 959-960 (1996)
Mohammad M Mojtahedi et al.
Organic letters, 9(15), 2791-2793 (2007-06-22)
A room temperature convenient disproportionation or reduction of aldehydes prompted by lithium bromide and triethylamine is described in a solvent-free environment. Distribution of the products to selectively direct the process toward Cannizzaro or Tishchenko reactions is controlled by the type
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