3-Fluoro-4-nitro-pyridine
3-Fluoro-4-nitropyridine
CAS: 13505-01-6
Molecular Formula: C5H3FN2O2
3-Fluoro-4-nitro-pyridine - Names and Identifiers
| Name | 3-Fluoro-4-nitropyridine |
| Synonyms | 3-Fluoro-4-nitropyridine 3-FLUORO-4-NITROPYRIDINE 3-Fluoro-4-nitro-pyridine Pyridine, 3-fluoro-4-nitro- Pyridine, 3-fluoro-4-nitro- (8CI, 9CI) |
| CAS | 13505-01-6 |
| InChI | InChI=1/C5H3FN2O2/c6-4-3-7-2-1-5(4)8(9)10/h1-3H |
3-Fluoro-4-nitro-pyridine - Physico-chemical Properties
| Molecular Formula | C5H3FN2O2 |
| Molar Mass | 142.09 |
| Density | 1.439±0.06 g/cm3(Predicted) |
| Boling Point | 62-64°C/5mm |
| Flash Point | 93.2°C |
| Vapor Presure | 0.0992mmHg at 25°C |
| pKa | -1.11±0.18(Predicted) |
| Storage Condition | Inert atmosphere,Store in freezer, under -20°C |
| Refractive Index | 1.538 |
3-Fluoro-4-nitro-pyridine - Risk and Safety
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 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.) |
3-Fluoro-4-nitro-pyridine - Reference Information
| Preparation | A solution of sodium nitrite (20g,288mmol) in water (40mL) was added dropwise to a stirred mixture of 3-amino-4-nitropyridine (40g,288mmol) in 34% fluoroboric acid (140mL). 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 (35mL) and ether (80mL), and dried under high vacuum for 12h at room temperature. The dried solid is decomposed by heating to 120 ℃. After decomposition, the remaining oil was treated with 10% sodium bicarbonate (80mL) solution and the mixture was extracted with dichloromethane. The combined extract was dried with sodium sulfate, filtered and the solvent was removed under reduced pressure to give the title compound, a light yellow solid. |
Last Update：2024-04-09 20:48:19
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