Benzyltriphenylphosphonium bromide Chemical Properties

Melting point:

295-298 °C(lit.)

storage temp. 

Inert atmosphere,Room Temperature

form 

solid

color 

White to Almost white

Water Solubility 

Soluble in water.

Sensitive 

Hygroscopic

BRN 

3599867

CAS DataBase Reference

1449-46-3(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39

WGK Germany 

3

HazardClass 

6.1

PackingGroup 

III

HS Code 

29319090

MSDS

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Benzyltriphenylphosphonium bromide Usage And Synthesis

Preparation

Benzyl triphenylphosphonium bromide is prepared by the following steps:To a solution of Ph3P (22 g, 0.084 mol) in toluene, BnBr (10 ml, 0.084 mol) was  added dropwise with ice-cooling and stirred at room temperature for 2 hours. A solid was  formed, which was filtered and washed with toluene and then dry pet ether to remove  unreacted Ph3P. The salt was dried under vacuum (35 g, 96% yield).

Chemical Properties

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Uses

Benzyltriphenylphosphonium bromide is used as a reactant for stereoselective azidolysis of vinyl epoxides, enantioselective aziridination and Friedel-Crafts cyclization for asymmetric synthesis of dihydrexidine, biomimetic iron(III) mediated oxidative dimerization for synthesis of benzoquinone parvistemin A, enantioselective synthesis of syn-diarylheptanoids from D-glucose, preparation of β-amyloid plaque ligands and decarboxylative cyclopropanation. It react with 4-methyl-oxetan-2-one to produce 4-hydroxy-1-phenyl-1-(triphenyl-l5-phosphanylidene)-pentan-2-one.

Benzyltriphenylphosphonium bromide(1449-46-3)Related Product Information

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