Thionyl Chloride → 2-Chlorobenzo[d]oxazole-4-carbonitrile

関与物質

反応条件

反応手順

A mixture of 2-sulfanyl-1,3-benzoxazole-4-carbonitrile (178 mg), thionyl chloride (427 mg) and DMF (0.0468 mL) was stirred at 80° C. for 5 min. The reaction mixture was concentrated under reduced pressure, ethyl acetate and THF were added, and the mixture was neutralized with saturated aqueous sodium hydrogen carbonate solution. The mixture was extracted with ethyl acetate, and the extract was washed with distilled water and brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was washed with diisopropyl ether to give the title compound (178 mg).

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