反应详情

30 g (0.18 mol) of fluorene was placed in a 1 L glass vessel, to which a mixed solution of 175 mL of ethylenediamine and 175 mL of THF was added under a nitrogen atmosphere, and dissolved by stirring. 5.6 g (0.812 mol) of metallic lithium was added to the resulting solution at 0° C. over 50 minutes. After completing the reaction, water was added thereto, and the target compound was extracted with diethyl ether and rinsed with a sodium chloride aqueous solution. Magnesium sulfate was added to the diethyl ether layer, which was dried in a refrigerator overnight. Magnesium sulfate was filtered off, and diethyl ether was removed to provide 27.6 g of 1,2,3,4-tetrahydrofluorene (4HFluH) as an orange solid matter (yield: 90%).

1. dissolutiondissolved
2. additionwas added
3. extractionthe target compound was extracted with diethyl ether
4. washrinsed with a sodium chloride aqueous solution
5. additionMagnesium sulfate was added to the diethyl ether layer, which
6. customwas dried in a refrigerator overnight
7. filtrationMagnesium sulfate was filtered off
8. customdiethyl ether was removed