3279-90-1
6-bromo-3,4-dihydroquinolin-2(1H)-one
CAS: 3279-90-1
Molecular Formula: C9H8BrNO
3279-90-1 - Names and Identifiers
3279-90-1 - Physico-chemical Properties
| Molecular Formula | C9H8BrNO |
| Molar Mass | 226.07 |
| Density | 1.559±0.06 g/cm3(Predicted) |
| Melting Point | 170-172℃ |
| Boling Point | 376.3±42.0 °C(Predicted) |
| Flash Point | 181.352°C |
| Vapor Presure | 0mmHg at 25°C |
| Appearance | Powder |
| Color | Brown |
| pKa | 13.92±0.20(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Sensitive | Light Sensitive |
| Refractive Index | 1.6 |
3279-90-1 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R52 - Harmful to aquatic organisms R22 - Harmful if swallowed |
| 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. |
3279-90-1 - Reference Information
| application | 6-bromo -1,2,3, 4-tetrahydro-2-quinolinone can be used as an intermediate in organic synthesis and a pharmaceutical intermediate, mainly used in laboratory research and development and chemical production. |
| preparation | 3, 4-dihydroquinoline -2(1H)-one (2.73g,18.55mmol) was dissolved in N,N-dimethylacetamide (30mL), and N-bromosuccinimide (3.30g) was slowly added in an ice water bath, 18.55mmol) of N,N-dimethylacetamide (10mL) solution. The reaction solution continued to be stirred in an ice water bath for 6 hours and then heated to room temperature for 12 hours. After the reaction, water (50mL) was added to the reaction mixture and extracted with ethyl acetate (50mL × 3). The organic phases were combined, dried with anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (petroleum ether/ethyl acetate (v/v)= 3/1) to obtain a white solid (3.86g,92.1%). |
Last Update：2024-04-09 21:54:55
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