Hexane → 2-(3-(1-Methyl-1-cyclohexyl)cyclopentadienyl)-2-(3,6-di-tert-butylfluorenyl)propane

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To a solution of 2.64 g (9.5 mmol) of 3,6-di-tert-butylfluorene in 45 ml of THF, 6.4 ml (10.4 mmol) of a hexane solution of n-butyllithium was dropwise added in a nitrogen atmosphere with ice cooling, followed by stirring at room temperature for one night. To the resulting red solution, a solution of 2.00 g (9.9 mmol) of 3-(1-methyl-1-cyclohexyl)-6,6-dimethylfulvene in 30 ml of THF was further dropwise added in a nitrogen atmosphere with ice cooling, followed by stirring at room temperature for 3 days. After the reaction solution was diluted with 100 ml of ether, 50 ml of water was added. The separated organic phase was washed with water and a saturated saline solution, then dried over magnesium sulfate and filtered. From the filtrate, the solvent was removed under reduced pressure to obtain a liquid. The liquid was isolated and purified by column chromatography (silica gel, developing solvent: hexane) to obtain 1.96 g (4.08 mmol) of a white solid (yield: 43%). The analyzed values are given below.

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