4-(BROMOMETHYL)-2,1,3-BENZOXADIAZOLE Chemical Properties

Melting point:

77 °C

Boiling point:

283.5℃

Density 

1.742

Flash point:

125.3℃

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

pka

-1.31±0.45(Predicted)

Safety Information

Hazard Codes 

Xn

Risk Statements 

36/37/38-22

Safety Statements 

26-37/39

HS Code 

2934999090

4-(BROMOMETHYL)-2,1,3-BENZOXADIAZOLE Usage And Synthesis

Synthesis

General procedure for the synthesis of 4-(bromomethyl)benzo[c][1,2,5]oxadiazole from 7-methyl-1H-benzo[D]imidazole: 7-methyl-1H-benzo[D]imidazole (13.4 g, 100 mmol) was dissolved in carbon tetrachloride (150 ml), N-bromosuccinimide (NBS, 23.5 g, 132 mmol) and benzoyl peroxide (Bz2O2, 0.29 g, 1.2 mmol). The reaction mixture was heated to 80-85 °C and kept for completion of the reaction. After completion of the reaction, the reaction system was cooled to 40 °C and concentrated under reduced pressure. The reaction mixture was filtered, the filter cake was washed with chloroform and the solvent was evaporated under reduced pressure to give the crude product (25.6 g). Purification by recrystallization from petroleum ether gave light yellow needle-like crystals of 4-(bromomethyl)benzo[c][1,2,5]oxadiazole (15.3 g) in 77.6% yield and melting point of 94-95 °C.

References

[1] Patent: CN102285978, 2016, B. Location in patent: Paragraph 0028-0030

4-(BROMOMETHYL)-2,1,3-BENZOXADIAZOLE(32863-30-2)Related Product Information

• 5-(BROMOMETHYL)-2,1,3-BENZOXADIAZOLE
• 4-(BROMOMETHYL)-2,1,3-BENZOXADIAZOLE
• 4-METHYL-BENZO(1,2,5)OXADIAZOLE