反应详情

To a solution of 3.0 g (10.8 mmol) of 3,6-di-tert-butylfluorene in 40 ml of THF, 7.0 ml (11.3 mmol) of a hexane solution of n-butyllithium was dropwise added in a nitrogen atmosphere with ice cooling, followed by stirring at room temperature for 6 hours. From the reaction mixture, the solvent was removed under reduced pressure, and the residue was washed with pentane and dried to obtain a white solid. To a solution of the solid in 30 ml of THF, a solution of 1.4 g (13.2 mmol) of 6,6-dimethylfulvene in 30 ml of THF was dropwise added in a nitrogen atmosphere with ice cooling, followed by stirring for 5 hours. Then, 30 ml of water-was added. The organic phase extracted with diethyl ether and separated was dried over magnesium sulfate and filtered. From the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid was recrystallized from methanol to obtain 2.9 g of a slightly yellow solid. The analyzed values are given below.

1. customFrom the reaction mixture, the solvent was removed under reduced pressure
2. washthe residue was washed with pentane
3. customdried
4. customto obtain a white solid
5. stirringby stirring for 5 hours
6. extractionThe organic phase extracted with diethyl ether
7. customseparated
8. dry with materialwas dried over magnesium sulfate
9. filtrationfiltered
10. customFrom the filtrate, the solvent was removed under reduced pressure
11. customto obtain a solid
12. customThe solid was recrystallized from methanol
13. customto obtain 2.9 g of a slightly yellow solid