3-BROMO-2-IODOPHENOL Chemical Properties

Melting point:

85℃

Boiling point:

243.9±20.0 °C(Predicted)

Density 

2.369±0.06 g/cm3(Predicted)

storage temp. 

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

form 

claggy looking crystalline powder

pka

7.55±0.10(Predicted)

color 

Off white (hint of cream & peach)

InChI

InChI=1S/C6H4BrIO/c7-4-2-1-3-5(9)6(4)8/h1-3,9H

InChIKey

WJJYPSTVJBRTGK-UHFFFAOYSA-N

SMILES

C1(O)=CC=CC(Br)=C1I

Safety Information

HS Code 

2908190090

3-BROMO-2-IODOPHENOL Usage And Synthesis

Application

2-Iodo-3-bromophenol can be used as a synthetic intermediate and a pharmaceutical intermediate, mainly in laboratory research and development processes and pharmaceutical and chemical production processes.

Synthesis

The general procedure for the synthesis of 2-iodo-3-bromophenol from 3-bromo-2-iodophenyl diethylcarbamate (3; 3.96 g, 10 mmol) was carried out as follows: to a solution of 3-bromo-2-iodophenyl diethylcarbamate in ethanol (EtOH, 100 mL) was added powdered sodium hydroxide (NaOH, 4.0 g, 100 mmol) in two portions. The reaction mixture was heated to reflux and maintained for 24 hours. The reaction progress was monitored by thin layer chromatography (TLC). After completion of the reaction, the mixture was cooled to room temperature (r.t.) and the reaction was quenched with 2 M aqueous hydrochloric acid (HCl). The aqueous layer was extracted with ethyl acetate (EtOAc, 3 × 30 mL). The organic layers were combined, washed with saturated saline (brine) and dried with anhydrous sodium sulfate (Na2SO4). Subsequently, the solvent was removed by evaporation under reduced pressure. The crude product was purified by silica gel column chromatography using petroleum ether (PE)/ethyl acetate (EtOAc) (8:1) as eluent to afford the target product, 2-iodo-3-bromophenol, as a white solid; Yield: 2.66 g (89% yield); Melting point: 85-87 °C. The spectral data (1H NMR and 13C NMR) of compound 4 were in agreement with literature reports.1H NMR (400 MHz, CDCl3) δ= 7.20 (dd, J = 8.1, 1.5 Hz, 1H), 7.12 (t, J = 8.1 Hz, 1H), 6.92 (dd, J = 8.1, 1.5 Hz, 1H), 5.54 (br s, 1H ). 13C NMR (400 MHz, CDCl3) δ= 156.6, 130.8, 129.6, 125.0, 113.3, 94.4.

References

[1] Journal of Organic Chemistry, 2005, vol. 70, # 16, p. 6548 - 6551
[2] Synthesis (Germany), 2017, vol. 49, # 16, p. 3726 - 3730
[3] Journal of Organic Chemistry, 2007, vol. 72, # 14, p. 5113 - 5118
[4] Organic and Biomolecular Chemistry, 2010, vol. 8, # 17, p. 3860 - 3864
[5] Journal of Organic Chemistry, 2011, vol. 76, # 9, p. 3416 - 3437

3-BROMO-2-IODOPHENOL(855836-52-1)Related Product Information

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