反应详情

温度

15 °C

To a solution of 25.0 g of fluorene in 200 ml of THF at −78° C. was added dropwise 220 ml of 1.6 M butyllithium solution in hexane. The mixture was stirred at this temperature for 1 h and was then allowed to warm to 15° C. The temperature was cooled down to −78° C. again and 77.7 g of n-octyl bromide was added dropwise into the mixture. The solution was allowed to warm to room temperature and was stirred at room temperature for 12 h. The mixture was poured into water and was extracted with ether. The combined extracts were washed with water and brine and were dried over anhydrous magnesium sulphate. The solvent was removed by rotary evaporation. Distillation under reduced pressure gave 50 g of 9,9-dioctylfluorene as a pale yellow oil (212-214° C./2 Toor) (yield 85.2%).

1. temperatureThe temperature was cooled down to −78° C. again
2. temperatureto warm to room temperature
3. stirringwas stirred at room temperature for 12 h
4. extractionwas extracted with ether
5. washThe combined extracts were washed with water and brine
6. dry with materialwere dried over anhydrous magnesium sulphate
7. customThe solvent was removed by rotary evaporation
8. distillationDistillation under reduced pressure