2-Chlorobenzoxazole → 2-[2-[4-[(4-Chlorophenyl)-2-pyridylmethoxy]-1-piperidyl]ethoxy]benzoxazole

참여 물질

반응 단계

To a solution of 2.35 g (6.78 mmol) of 2-[4-[(4-chlorophenyl)-2-pyridylmethoxy]-1piperidyl]ethanol obtained in Example 10 dissolved in 20 ml of toluene was added 0.53 g (13.25 mmol) of sodium hydride (60% dispersion in mineral oil), and 1.25 g (8.14 mmol) of 2-chlorobenzoxazole was added to the mixed solution. The mixture stirred under reflux for 7 hours. After the reaction, the insolubles were filtered off, and the filtrate was concentrated under reduced pressure. The residue was separated by silica gel column chromatography using a mixture of chloroform and methanol in the volume ratio of 40:1 as the developing solvent. The desired fractions was concentrated under reduced pressure to give 1.10 g (35%) of 2-[2-[4-[(4-chlorophenyl)-2-pyridylmethoxy]-1-piperidyl]ethoxy]benzoxazole as an oil.

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