3-Fluoro-2-nitropyridine (2-Nitro-3-Fluoropyridine)
3-Fluoro-2-nitropyridine
CAS: 54231-35-5
Molecular Formula: C5H3FN2O2
3-Fluoro-2-nitropyridine (2-Nitro-3-Fluoropyridine) - Names and Identifiers
3-Fluoro-2-nitropyridine (2-Nitro-3-Fluoropyridine) - Physico-chemical Properties
| Molecular Formula | C5H3FN2O2 |
| Molar Mass | 142.09 |
| Density | 1.439±0.06 g/cm3(Predicted) |
| Melting Point | 35°C |
| Boling Point | 255.8±20.0 °C(Predicted) |
| Water Solubility | Slightly soluble in water. |
| Appearance | powder to crystal |
| Color | Light yellow to Yellow to Orange |
| pKa | -5.01±0.22(Predicted) |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| MDL | MFCD04114127 |
3-Fluoro-2-nitropyridine (2-Nitro-3-Fluoropyridine) - Risk and Safety
| Risk Codes | 34 - Causes burns |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN3261 |
| TSCA | N |
| HS Code | 29339900 |
| Hazard Class | IRRITANT |
3-Fluoro-2-nitropyridine (2-Nitro-3-Fluoropyridine) - Reference Information
| Application | 3-fluoro-2-nitropyridine is an organic intermediate, which can be prepared from 3-amino-2-nitropyridine through diazotization reaction. |
| Preparation | A solution of sodium nitrite (20g,288 mmol) in water (40 mL) was added dropwise to a stirred mixture of 3-amino-2-nitropyridine (40g,288 mmol) in 34% fluoroboric acid (140 mL). During the addition period, the temperature was kept between -8°C and -2°C. after 0.5 hours, the suspension was filtered and the solid was washed with 34% fluoroboric acid (35 mL) and ether (80 mL), and dried at room temperature under high vacuum for 12 h to obtain an orange-brown solid salt of 52 g fluoroboric acid. The dried solid is decomposed by heating to 120 ℃. After decomposition, the remaining oil is treated with 10% sodium bicarbonate (80mL) solution, and the mixture is extracted with dichloromethane. The combined extract is dried with sodium sulfate, filtered and the solvent is removed under reduced pressure to obtain the title compound, which is a light yellow solid. |
Last Update：2024-04-09 19:05:12
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