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| | Benzyltriphenylphosphonium bromide Basic information | | Preparation |
| | 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) |
| 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 |
| | 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 | WHITE CRYSTALLINE POWDER | | 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 Preparation Products And Raw materials |
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