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10 g of 1,5-hexadien-3-ol was dissolved in 100 ml of tetrahydrofuran (THF), and the atmosphere was replaced with argon. 4.1 g of 60% sodium hydride was added little by little. After hydrogen gas had ceased to generate, a THF solution of 75 g of 1,10-dibromodecane was added, and reflux was carried out for 8 hours. The insoluble matter generated was filtered off, and the solvent was evaporated. The residue was purified by column chromatography, to obtain 11.3 g of the objective compound (1). (Yield: 35%).

1. temperaturereflux
2. filtrationThe insoluble matter generated was filtered off
3. customthe solvent was evaporated
4. customThe residue was purified by column chromatography