21702-84-1
2,4-dibromoanisole
CAS: 21702-84-1
Molecular Formula: C7H6Br2O
21702-84-1 - Names and Identifiers
| Name | 2,4-dibromoanisole |
| Synonyms | 4,6-Dibromoanisole 2,4-dibromoanisole 2,4-Dibromoanisole 2,4-dibromo-1-methoxybenzene 1,3-Dibromo-4-methoxybenzene 2,4-DIBROMO-1-METHOXYBENZENE Benzene, 2,4-dibromo-1-methoxy- Methyl(2,4-dibromophenyl) ether Benzene, 2,4-Dibromo-1-methoxy- |
| CAS | 21702-84-1 |
| EINECS | 244-536-5 |
| InChI | InChI=1/C7H6Br2O/c1-10-7-3-2-5(8)4-6(7)9/h2-4H,1H3 |
21702-84-1 - Physico-chemical Properties
| Molecular Formula | C7H6Br2O |
| Molar Mass | 265.93 |
| Density | 1.8014 (rough estimate) |
| Melting Point | 61-63°C(lit.) |
| Boling Point | 101-106°C1mm Hg(lit.) |
| Flash Point | 82-88°C/0.3mm |
| Vapor Presure | 0.00295mmHg at 25°C |
| Appearance | Crystalline Powder |
| Color | Light beige |
| BRN | 2045290 |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Refractive Index | 1.5030 (estimate) |
| MDL | MFCD00000079 |
21702-84-1 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| HS Code | 29093090 |
21702-84-1 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | 2,4-dibromoanisole is a very important organic synthesis and chemical pharmaceutical intermediate, which can be widely used in laboratory research and development and pharmaceutical research and development. |
| preparation | after adding 2, 4-dibromofluorobenzene (20.0g,0.08mol,1eq.) and anhydrous DMF(350 mL) to a 500mL round bottom flask, slowly adding sodium methoxide (5.2g,0.09mol,1.2eq.) to the round bottom flask, and stirring vigorously overnight at room temperature, then 5% HCl was added to neutralize and the reaction was stopped. CH2Cl2 extraction (50mL × 3), organic phase washed with distilled water (50mL × 3), anhydrous magnesium sulfate drying organic phase, filtration to remove magnesium sulfate, spin evaporation to remove solvent to obtain light yellow solid, silica gel chromatography column purification (eluent: petroleum ether), to obtain 30g of white solid with a yield of 95%. |
Last Update：2024-04-09 15:16:48
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View History
21702-84-1
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