反应详情

温度

60 °C

Charged were 2-bromofluorene 25.0 g, iodine 11.5 g, orthoperiodic acid 4.88 g, acetic acid 150 ml, conc. sulfuric acid 3 ml and water 10 ml, and the mixture was heated at 60° C. for 30 minutes while stirring. Further, the temperature was elevated up to 90° C., and the mixture was heated for 3 hours while stirring. The reaction solution was left cooling down to room temperature and poured into 500 ml of water. The precipitate formed was filtered and washed with ethanol and water. The solid matter thus obtained was recrystallized from ethanol to obtain 26.5 g of yellow crystal of 2-bromo-7-iodofluorene.

1. additionCharged
2. customwas elevated up to 90° C.
3. temperaturethe mixture was heated for 3 hours
4. stirringwhile stirring
5. waitThe reaction solution was left
6. temperaturecooling down to room temperature
7. customThe precipitate formed
8. filtrationwas filtered
9. washwashed with ethanol and water
10. customThe solid matter thus obtained
11. customwas recrystallized from ethanol