Fluorene → HCID 178506660, compound

Participants

Reaction Steps

In a 300-cm3 four-necked flask in which the atmosphere was replaced with nitrogen, 7.4 g of fluorene were dissolved in 100 cm3 of tetrahydrofuran, followed by treating the solution with methyllithium, thereby obtaining a tetrahydrofuran solution of fluorenyllithium. Next, 50 cm3 of a tetrahydrofuran solution containing 5.2 g of previously synthesized 3,7-biscyclopentadienylidenebicyclo[3,3,0]octane were added dropwise to the tetrahydrofuran solution at -10° C. over 30 minutes. After completion of the addition, the reaction temperature was elevated up to room temperature, followed by stirring for 15 hours. Then, 100 cm3 of a 3.6% hydrochloric acid solution were poured thereinto to bring the reaction to an end. The resultant solid was collected by filtration, washed with ether, and then dried to obtain 7.6 g of white powdery 3,7-dicyclopentadienyl-3,7-difluorenylbicyclo[3,3,0]octane.

Provenance & Evidence