反应详情

9-Hydroxymethylfluorene (10 g) and 1 g KOH were dissolved in 90 ml of methanol and reacted at 60° C. for 1 hour, and the methanol was evaporated. From the solid thus obtained, dibenzofulvene was extracted using hexane and water, and washed with water until the hexane phase containing dibenzofulvene was neutral. After separating off the hexane phase, the hexane was evaporated, and the solid obtained was recrystallized from a mixed solvent of hexane-diethyl ether (4/6 v/v) to obtain dibenzofulvene. The melting point of the dibenzofulvene was 50-52° C.

1. customreacted at 60° C. for 1 hour
2. customthe methanol was evaporated
3. customFrom the solid thus obtained
4. extractiondibenzofulvene was extracted
5. washwashed with water until the hexane phase
6. additioncontaining dibenzofulvene
7. customAfter separating off the hexane phase
8. customthe hexane was evaporated
9. customthe solid obtained
10. customwas recrystallized from a mixed solvent of hexane-diethyl ether (4/6 v/v)