4-Bromothiophene-2-carbonitrile Chemical Properties

Melting point:

47.0 to 51.0 °C

Boiling point:

230.4±20.0 °C(Predicted)

Density 

1.82±0.1 g/cm3(Predicted)

storage temp. 

Keep in dark place,Sealed in dry,Room Temperature

form 

powder to crystal

color 

White to Light yellow

Safety Information

Hazard Codes 

Xi,Xn

Risk Statements 

22-37/38-41

Safety Statements 

26-39

HazardClass 

IRRITANT

HS Code 

2934999090

4-Bromothiophene-2-carbonitrile Usage And Synthesis

Synthesis

The general procedure for the synthesis of 4-bromothiophene-2-carbonitrile from 4-bromo-2-thiophenecarboxaldehyde was as follows: 4-bromothiophene-2-carboxaldehyde (600 g, 3.14 mmol) and hydroxylamine hydrochloride (438 g, 6.30 mmol) were dissolved in pyridine (5 L). After the reaction mixture was cooled to room temperature, it was heated to 90 °C and maintained for 10 min. Subsequently, acetic anhydride (1940 g, 19.0 mmol) was slowly added dropwise and the reaction system was heated to 80°C for 1 hour. After completion of the reaction, the mixture was poured into water (20 L) and stirred for 30 min. After filtration and drying, the target product 4-bromothiophene-2-carbonitrile (564 g, 95% yield) was obtained.

References

[1] Patent: CN104230960, 2017, B. Location in patent: Paragraph 0449; 0450; 0451
[2] Bioorganic and Medicinal Chemistry Letters, 2000, vol. 10, # 5, p. 415 - 418
[3] Bioorganic and Medicinal Chemistry Letters, 2005, vol. 15, # 11, p. 2870 - 2875
[4] Patent: US2017/151225, 2017, A1. Location in patent: Paragraph 0926; 0927

4-Bromothiophene-2-carbonitrile(18791-99-6)Related Product Information

• Methyl 4-chlorothiophene-2-carboxylate
• 3-Bromothiophene-2-carboxylic acid
• Methyl 4-bromothiophene-2-carboxylate
• METHYL 3-CHLOROTHIOPHENE-2-CARBOXYLATE
• 4-Bromo-2-thiophenecarboxylic acid
• METHYL 3-BROMOTHIOPHENE-2-CARBOXYLATE
• 3-Chlorothiophene-2-carboxylic acid
• 4-Chlorothiophene-2-carbonitrile
• 4-CHLOROTHIOPHENE-2-CARBOXYLIC ACID
• 3-Chloro-2-Cyanothiophene
• 3-BROMOTHIOPHENE-2-CARBONITRILE
• 2-Bromothiophene-3-carbonitrile,2-Bromothiophene-3-carbonitrile 97%
• 5-BROMOTHIOPHENE-2-CARBONITRILE
• 4-Bromo-2-methylthiophene
• 2-Thiophenecarbonitrile
• 4-Bromothiophene-2-carbonitrile
• 3-Bromothiophene-4-carbonitrile,4-BROMOTHIOPHENE-3-CARBONITRILE
• 3-BROMOTHIOPHENE-2-CARBONITRILE, 97+%