反应 #3733360
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US06603019B2
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: A solution of 2-fluoro-4-iodo-phenyl acetonitrile (Intermediate 2, 3 g, 11.45 mmol) in methanol (50 mL) and benzene (50 mL) was treated with p-toluene sulfonic acid (2.5 g, 13.15 mmol) and heated at reflux overnight using a Dean-Stark water trap. The volatiles were distilled off in vacuo and the residue was diluted with water and diethyl ether. The phases were separated and the organic phase was washed with saturated aqueous sodium bicarbonate (×1), water (×1) and brine (×1), dried over anhydrous magnesium sulfate, filtered and evaporated in vacuo to afford an oil which was subjected to flash column chromatography over silica gel (230-400 mesh) using 6% ethyl acetate in hexane as the eluent to afford the title compound as a colorless oil (2.7 g, 80%). heated at reflux overnight The volatiles were distilled off in vacuo the residue was diluted with water and diethyl ether The phases were separated the organic phase was washed with saturated aqueous sodium bicarbonate (×1), water (×1) and brine (×1) dried over anhydrous magnesium sulfate filtered evaporated in vacuo to afford an oil which
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