4-Bromo-2-iodophenol
4-Bromo-2-iodophenol
CAS: 207115-22-8
Molecular Formula: C6H4BrIO
4-Bromo-2-iodophenol - Names and Identifiers
| Name | 4-Bromo-2-iodophenol |
| Synonyms | 4-BROMO-2-IODOPHENOL 4-Bromo-2-iodophenol 2-Iodo-4-bromophenol Phenol, 4-bromo-2-iodo- |
| CAS | 207115-22-8 |
| InChI | InChI=1S/C6H4BrIO/c7-4-1-2-6(9)5(8)3-4/h1-3,9H |
4-Bromo-2-iodophenol - Physico-chemical Properties
| Molecular Formula | C6H4BrIO |
| Molar Mass | 298.9 |
| Density | 2.369±0.06 g/cm3 (20 ºC 760 Torr) |
| Melting Point | 90℃ (ethanol ) |
| Boling Point | 243.0±25.0℃ (760 Torr) |
| Flash Point | 100.8±23.2℃ |
| Appearance | powder to crystal |
| Color | White to Light yellow to Light orange |
| pKa | 7.94±0.18(Predicted) |
| Storage Condition | under inert gas (nitrogen or Argon) at 2–8 °C |
4-Bromo-2-iodophenol - Reference Information
| Application | 4-bromo-2-iodophenol, also known as 2-iodo-4-bromophenol, is an organic intermediate that can be obtained by nitrification and reduction of p-bromophenol and diazotized iodine generation. |
| preparation | 1) synthesis of 2-nitro -4-bromophenol: adding p-bromophenol in a chemical reactor, then directly adding dilute nitric acid under room temperature adjustment, standing for 20min, fractionating the reactants under reduced pressure, collecting a fraction of 125 ℃ and 2.35kPa to obtain 2-nitro -4-bromophenol; 2) Synthesis of 2-amino-4-bromophenol: Put 2-nitro-4-bromophenol in a chemical reactor, add Fe and dilute HCL to 2-nitro-4-bromophenol, and Heat to realize ortho nitrification, keep the temperature at 70 ℃ for 1h, fractionate the reactants under reduced pressure, collect 105 ℃,2.57kPa fraction to obtain 2-amino -4-bromophenol; 3) Synthesis of 4-bromo -2-iodophenol: add a slightly excess of NaNO2,HI in the reaction kettle, and then add 2-amino -4-Bromophenol, keep the temperature at 0 ℃, carry out the reduction reaction for 40min, carry out decompression fractionation of the reactants, collect at 120 ℃, the 3.45kPa fraction gives 4-bromo-2-iodophenol. |
Last Update：2024-04-09 15:16:48
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