2,7-dibromo-9-fluorenone(CAS#14348-75-5)
Risk and Safety
| Hazard Symbols | Xi – Irritant |
| Risk Codes | 36/37/38 – Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 – Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| HS Code | 29147000 |
| Hazard Class | IRRITANT |
2,7-dibromo-9-fluorenone(CAS#14348-75-5) Reference Information
| preparation | 12.4g(77.75mmol) of bromine and 85mL of water were added to a 250mL four-necked flask with thermometer, reflux condenser tube and mechanical stirring, 10g(55.56mmol) of fluorenone under stirring, heated, reacted at 95-100 ℃ for 3 hours, stopped the reaction and cooled to room temperature; adjust the pH value of the reaction system to neutral, add 9.3g(58.31mmol) of bromine, heat to 95-100 ℃ for 4 hours under stirring, stop the reaction and cool to room temperature; adjust the pH value of the reaction system to neutral, add 6.3g(38.87mmol) of bromine, heat to 95-100 ℃ for 4 hours under stirring, and stop the reaction; cooling, suction filtration, the obtained solid was washed three times with 30mL of water and dried to obtain yellow solid product with 98% yield. |
| Uses | Pharmaceutical intermediates are also important intermediates for the synthesis of optoelectronic materials |
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