Fluorene → HCID 22568527、化合物

A 2000 mL round flask was charged with 9H-fluorene (15 g, 90.24 mmol) and potassium tert-butoxide (21.2 g, 198.5 mmol), and then 300 mL of DMSO was slowly injected thereto. Under nitrogen atmosphere, 1-bromotetradecane (54 g, 198.5 mmol) was slowly dropped through a dropping funnel while the reactor temperature was maintained at 10° C. or lower. The mixture was stirred at room temperature for 24 hours, and the reaction was terminated by addition of 500 mL of distilled water. The organic layer collected by extraction with n-hexane was dried over magnesium sulfate, followed by removal of volatile materials, and then purified with n-hexane by using silica gel column chromatography tube, followed by drying, to thereby obtain 42.0 g of 9,9-ditetradecyl-9H-fluorene (yield: 83.26%) as white solid.