(4-BROMOBENZYL)TRIPHENYLPHOSPHONIUM BROMIDE Chemical Properties

Melting point:

270-273 °C

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

soluble in Methanol

form 

solid

color 

White to Almost white

Sensitive 

Hygroscopic

BRN 

4173386

CAS DataBase Reference

51044-13-4(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

37/39-26

HS Code 

2931.90.6000

MSDS

• Language:English Provider:ACROS
• Language:English Provider:ALFA

(4-BROMOBENZYL)TRIPHENYLPHOSPHONIUM BROMIDE Usage And Synthesis

Chemical Properties

cream crystalline powder

Uses

(4-Bromobenzyl)triphenylphosphonium Bromide is used in the preparation of potential precursors for single isomers of buckybowls and carbon nanotubes.

Synthesis

The reaction was carried out with 4-bromobenzyl bromide (50 g, 200 mmol, 1.0 eq.) and triphenylphosphine (57 g, 220 mmol, 1.1 eq.) in chloroform (400 mL, 0.5 M) at reflux for 4 hours. After completion of the reaction, the reaction solution was cooled to room temperature and ether (1.5 L) was added to precipitate the phosphonium salt. The crude product was dissolved in dichloromethane (300 mL) and precipitated by adding ether (1.5 L) again. It was filtered through a Brinell funnel and washed with ether (500 mL) to give (4-bromobenzyl)triphenylphosphonium bromide (44) as a white solid (123 g, quantitative yield).

References

[1] Patent: WO2005/97812, 2005, A1. Location in patent: Page/Page column 64
[2] ACS Medicinal Chemistry Letters, 2015, vol. 6, # 8, p. 902 - 907
[3] Patent: KR2015/103967, 2015, A. Location in patent: Paragraph 0100
[4] Dyes and Pigments, 2019, vol. 162, p. 959 - 966
[5] Patent: US2008/81934, 2008, A1. Location in patent: Page/Page column 34

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