[A11552] CAS 1034-39-5 | Triphenylphosphine dibromide, 96%

CAS : 1034-39-5
UN# : UN3261
MDL : MFCD00000054
Hazard Class : 8
EINECS : 213-855-1
Packing Group : II

Other name :

Dibromotriphenylphosphorane

Chemical Properties

Formula : (C6H5)3PBr2
Formula weight : 422.10
Melting Point : ca 260° dec.
Sensitivity : Moisture Sensitive. Store under Nitrogen. Ambient temperatures.
Form : Powder
Solubility : Soluble in water, dichloromethane, acetonitrile, phenyl cyanide, dimethyl formamide, ether, chloroform, alcohol, carbon tetrachloride, acetic acid and carbon disulfide. Sparingly soluble in phenyl chloride, triphenylphosphine and phenyl hydride. Insoluble in aqueous bromine.

Literature References

Reagent for the conversion of alcohols and phenols to bromides in good yields: J. Org. Chem., 37, 626 (1972). Particularly useful for alcohols where sensitive functionality is present: J. Org. Chem., 49, 431 (1984); Synth. Commun., 22, 2945 (1992). Cleaves dialkyl ethers to the two alkyl bromides: J. Am. Chem. Soc., 86, 5037 (1964); J. Org. Chem., 37, 626 (1972). Reaction with amines gives iminophosphoranes, which have been used as a means of blocking an amino group to permit monoalkylation: Synthesis, 295 (1980). Iminophosphoranes also undergo a Wittig-like condensation with CO2 or CS2 to give the isocyanates or isothiocyanates respectively: Synthesis, 596 (1982): Ureas are dehydrated to carbodiimides: Liebigs Ann. Chem., 718, 24 (1968); Synthesis, 373 (1981). The reagent formed with DMSO at low temperatures provides an alternative to the Swern oxidation for selective conversion of alcohols to carbonyl compounds: Tetrahedron Lett., 43, 8355 (2002).

Notes

Moisture sensitive. Store in a cool place. Incompatible with strong bases, strong oxidizing agents, bases and active metals.Other References:Beilstein: 917652UN#: UN3261

Grade Specifications

Grade Specifications

Hazard Statements : H314-H318Causes severe skin burns and eye damage.Causes serious eye damage.
Precautionary Statements : P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501aDo not breathe dust/fume/gas/mist/vapours/spray.IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.Store locked up.Dispose of contents/container in accordance with local/regional/national/international regulations.