4-BROMO-3-FLUOROPHENYLACETIC ACID Chemical Properties

Boiling point:

317.9±27.0 °C(Predicted)

Density 

1.697±0.06 g/cm3 (20 ºC 760 Torr)

storage temp. 

Sealed in dry,Room Temperature

pka

3.97±0.10(Predicted)

form 

powder

color 

White to off white

Safety Information

HS Code 

2916399090

4-BROMO-3-FLUOROPHENYLACETIC ACID Usage And Synthesis

Chemical Properties

off-white solid

Synthesis

General procedure for the synthesis of 2-(4-bromo-3-fluorophenyl)acetic acid from 3-fluoro-4-bromophenylacetonitrile: 3-fluoro-4-bromophenylacetonitrile (0.78 g, 3.64 mmol) was dissolved in a mixture of sulphuric acid (5 mL) and water (5 mL), and the reaction was stirred for 16 hours at 100 °C. The progress of the reaction was monitored by LCMS and after confirming complete consumption of the raw materials, the reaction mixture was dissolved in water (20 mL) and extracted with ethyl acetate (20 mL). The organic layers were combined, dried with anhydrous sodium sulfate, filtered and concentrated under reduced pressure to afford 2-(4-bromo-3-fluorophenyl)acetic acid (0.7 g, 2.046 mmol, 56.1% yield) as a white solid. The product was characterized by 1H NMR (400 MHz, CD3OD): δ 7.53 (t, J = 7.8 Hz, 1H), 7.16 (dd, J = 9.8, 1.9 Hz, 1H), 7.02 (d, J = 8.0 Hz, 1H), 3.61 (s, 2H).

References

[1] Patent: WO2018/39386, 2018, A1. Location in patent: Page/Page column 302
[2] Patent: US2014/275111, 2014, A1. Location in patent: Paragraph 0349; 0350
[3] Patent: WO2014/141187, 2014, A1. Location in patent: Page/Page column 76
[4] Patent: WO2007/69986, 2007, A1. Location in patent: Page/Page column 92-93
[5] Patent: WO2017/98440, 2017, A1. Location in patent: Page/Page column 184

4-BROMO-3-FLUOROPHENYLACETIC ACID(942282-40-8)Related Product Information

• 3-Fluoro-4-Bromoobenzyl Cyanide
• 4-Bromo-3-fluorobenzaldehyde
• 3-Fluorophenylacetic acid