反应详情

12.3 cm3 (30.7 mmol) of a 2.5 molar hexane solution of n-butyllithium were added slowly at room temperature to a solution of 5.10 g (30.7 mmol) of fluorene in 60 cm3 of THF. After 40 minutes, 7.07 g (30.7 mmol) of diphenylfulvene were added to the orange solution, and the mixture was stirred overnight. 60 cm3 of water were added to the dark red solution, the solution becoming a yellow color, and the solution was extracted with ether. The ether phase was dried over MgSO4, evaporated and left to crystallize at -35° C. 5.1 g (42%) of 1,1-cyclopentadienyl(9-fluorenyl)dipenylmethane were obtained as a beige powder.

1. extractionthe solution was extracted with ether
2. dry with materialThe ether phase was dried over MgSO4
3. customevaporated
4. waitleft
5. customto crystallize at -35° C