反应详情

Next, 2,7-dibromo-9-phenyl-9H-fluorene-9-ol is dissolved in benzene, and benzene containing concentrated sulfuric acid is added into the solution and react for one hour. After the solution is cooled down, sodium carbonate is added into the solution. Next, a chloroform extraction is performed, and the organic layer is washed two times by water and dried by magnesium sulfate. Next, the rotary concentrator is utilized to remove the solvent, then chloroform and methanol are utilized to initiate a recrystallization reaction and produce 2,7-di bromo-9,9-diphenylfluorene.

1. customreact for one hour
2. temperatureAfter the solution is cooled down
3. extractionNext, a chloroform extraction
4. washthe organic layer is washed two times by water
5. dry with materialdried by magnesium sulfate
6. customto remove the solvent
7. customa recrystallization reaction