2,6-二氯-3-碘吡-
2,6-Dichloro-3-iodopyridine
CAS: 148493-37-2
Molecular Formula: C5H2Cl2IN
2,6-二氯-3-碘吡- - Names and Identifiers
| Name | 2,6-Dichloro-3-iodopyridine |
| Synonyms | 2-Dichloro-3-Iodopyridine 2,6-Dichloro-3-iodopyridine 2,6-DICHLORO-3-IODOPYRIDINE Pyridine, 2,6-dichloro-3-iodo- pyridine, 2,6-dichloro-3-iodo- |
| CAS | 148493-37-2 |
| InChI | InChI=1/C5H2Cl2IN/c6-4-2-1-3(8)5(7)9-4/h1-2H |
2,6-二氯-3-碘吡- - Physico-chemical Properties
| Molecular Formula | C5H2Cl2IN |
| Molar Mass | 273.89 |
| Density | 2.129±0.06 g/cm3(Predicted) |
| Melting Point | 74-79 °C |
| Boling Point | 294.8±35.0 °C(Predicted) |
| Flash Point | 132.1°C |
| Water Solubility | Slightly soluble in water. |
| Vapor Presure | 0.00279mmHg at 25°C |
| Appearance | Pale yellow powder |
| Color | White to brown |
| pKa | -3.87±0.10(Predicted) |
| Storage Condition | 2-8°C |
| Sensitive | Light Sensitive |
| Refractive Index | 1.652 |
| MDL | MFCD03094686 |
2,6-二氯-3-碘吡- - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 2811 6.1 / PGIII |
| WGK Germany | 3 |
| Hazard Note | Irritant |
| Hazard Class | 6.1 |
| Packing Group | III |
2,6-二氯-3-碘吡- - Reference Information
| Application | 2, 6-dichloro-3-iodopyridine is an organic intermediate, 6-dichloropyridine is used as raw material, butyl lithium is first used to remove hydrogen and then iodinated with elemental iodine. |
| preparation | at -78°C, diisopropylamine (3.50 mL,2.50g,25.0 mmol) and 2, 6-dichloropyridine (3.70g,25.0 mmol) was added to n-BuLi(10.0 mL,25.0 mmol,2.50m solution in hexane) followed by THF(40 mL). After stirring at -78°C for 2 hours, a solution of iodine (7.40g,29.0 mmol) in THF(25 mL) was added, the reaction mixture was then allowed to reach room temperature. After 30 min H2O(100 mL) was added to the mixture. The aqueous layer was extracted with Et2O(3 x 75 mL) and the combined organic extracts were washed with saturated aqueous NH4Cl (75 mL) and saturated aqueous Na2S2O5 (25 mL), the organic extracts were dried over Na2SO4 and concentrated in vacuo to give 2, 6-dichloro-3-iodopyridine. |
Last Update：2024-04-10 22:29:15
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