4-Hydroxy--nitrostyrene
4-HYDROXY-B-NITROSTYRENE
CAS: 3179-08-6
Molecular Formula: C8H7NO3
4-Hydroxy--nitrostyrene - Names and Identifiers
4-Hydroxy--nitrostyrene - Physico-chemical Properties
| Molecular Formula | C8H7NO3 |
| Molar Mass | 165.15 |
| Density | 1.320±0.06 g/cm3(Predicted) |
| Melting Point | 167-171°C(lit.) |
| Boling Point | 318.3±17.0 °C(Predicted) |
| pKa | 8.04±0.13(Predicted) |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
4-Hydroxy--nitrostyrene - Risk and Safety
| Risk Codes | 22 - Harmful if swallowed |
| WGK Germany | 3 |
| Hazard Class | IRRITANT |
4-Hydroxy--nitrostyrene - Reference Information
| overview | 4-hydroxy-nitrostyrene is an important intermediate raw material for synthetic pharmaceutical products. The existing 4-hydroxy-β-nitrostyrene preparation method yield is not high, the synthesis process is complex, the yield is unstable, the need to invent a new preparation method to overcome the shortcomings of the existing technology, in order to achieve energy saving, environmental protection, green purposes. |
| preparation | preparation of 4-hydroxy-nitrostyrene: add 1221 mg of p-hydroxybenzaldehyde and 30 ml of methanol into the reactor, stir, add 671 mg of nitromethane at room temperature, stir for 20 minutes in an ice bath, add 848 mg of ammonium acetate, stir for 4 hours at room temperature, and the reaction solution gradually turns yellow. Let stand for 5 hours and filter out yellow solids. The compound 4-hydroxy-nitrostyrene was obtained by recrystallization in methanol, filtration and vacuum drying with a yield of 91.1%. |
Last Update：2024-04-09 02:00:08
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CAS: 3179-08-6
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