ChemicalBook Product Catalog Pharmaceutical intermediates Heterocyclic compound Pyridine compound Pyridine derivatives Pyridinium tribromide

Pyridinium tribromide

Pyridinium tribromide Basic information
Product Name:Pyridinium tribromide
Synonyms:Pyridinium bromide perbromide ,90%;pyridin-1-iuM tribroMide;PyridiniuM broMide perbroMide, 90+% 100GR;Monopyridin-1-iuM tribroMide;Pyridine Hydrobromide Perbromide Pyridinium Tribromide;PyridiniuM broMide perbroMide, 90+%, technical;PYRIDINIUM BROMIDE-PERBROMIDE FOR SYNTHE;PyridiniuM TribroMide (>90%)
CAS:39416-48-3
MF:C5H6Br3N-2
MW:319.82
EINECS:254-446-8
Product Categories:Bromination;Halogenation;Pyridinium Compounds;Synthetic Organic Chemistry
Mol File:39416-48-3.mol
Pyridinium tribromide Structure
Pyridinium tribromide Chemical Properties
Melting point 127-133 °C
density 2.9569 (rough estimate)
refractive index 1.6800 (estimate)
storage temp. Store at <= 20°C.
solubility soluble in Methanol
form Powder, Crystals and/or Chunks
color Red-orange to red to brown
Water Solubility decomposes
Sensitive Lachrymatory
Merck 14,7973
BRN 3690144
Stability:Stable. Incompatible with strong oxidizing agents, strong bases.
InChIKeyYPCPFIMBGJOEKU-UHFFFAOYSA-O
CAS DataBase Reference39416-48-3(CAS DataBase Reference)
EPA Substance Registry SystemPyridinium hydrogen tribromide (39416-48-3)
Safety Information
Hazard Codes C,Xi
Risk Statements 37/38-34-36
Safety Statements 26-36/37/39-45-24/25-27
RIDADR UN 3261 8/PG 2
WGK Germany 3
F 3
Hazard Note Lachrymatory
TSCA Yes
HazardClass 8
PackingGroup III
HS Code 29333100
MSDS Information
ProviderLanguage
Pyridine hydrobromide compound with bromine English
SigmaAldrich English
ACROS English
ALFA English
Pyridinium tribromide Usage And Synthesis
Chemical Propertiesred crystals
UsesPyridinium Tribromide is a reagent used in the α-thiocyanation of ketones and has also been applied to the synthesis of β-adrenergic blocking agents (also known as β-blockers) for patients with heart failure.
UsesIn small-scale brominations, where it is much more convenient and agreeable to measure and use than elemental bromine.
UsesPyridine hydrobromide perbromide is used as a brominating reagent in alfa-bromination and alfa-thiocyanation of ketones, phenols, unsaturated and aromatic ethers. It is used as a raw material in the preparation of beta-adrenergic blocking agents. Furthermore, it is used as an analytical reagent.
Purification MethodsIt is a very good brominating agent-liberating one mol of Br2. Purify it by recrystallisation from glacial acetic acid (33g from 100mL of AcOH) to give orange-red crystals. [Fieser & Fieser Reagents for Organic Chemistry 1 967 1967, Englert & McElvain J Am Chem Soc 51 865 1929, Beilstein 20 II 103, 20/5 V 181.]
Pyridinium tribromide Preparation Products And Raw materials
Raw materialsGovernment regulation
Preparation Products4-Bromo-1-chloroisoquinoline-->2,3,4-Trimethoxyphenylboronic acid-->(4-FLUOROPHENYLTHIO)ACETIC ACID
Pyridine sulfur trioxide 2-[(4-AMINO-PHENYL)-ETHYL-AMINO]-ETHANOL Pyridine hydrochloride Methyltriphenylphosphonium bromide Pyridine hydrobromide DEXTROMETHORPHAN HYDROBROMIDE Pyridinium chlorochromate Boron tribromide Sodium bromate Chromium picolinate Hydrogen bromide 2,4,6-Collidine Ethidium bromide Bromine Bromide Phosphorus tribromide Pyridine Methyl bromide
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