反应详情

To an ice-cold solution of methyl 2-(2-chloro-4-fluorophenyl)pent-4-enoate (6.0 g, 24.7 mmol) in methylene chloride (50 mL) was added meta-chloroperbenzoic acid (6.7 g, 70% purity, 27.2 mmol). The cooling bath removed and the reaction stirred for 16 hours. The reaction was filtered, the filtrate washed repeatedly with 1 N sodium hydroxide, dried with sodium sulfate and the solvent was evaporated in vacuo. The residue was purified by column chromatography on silica gel using n-heptane/ethyl acetate (v/v 1:9 to 2:8) as eluent. The title compound was obtained as a colourless liquid (5.1 g, 80%).

1. customThe cooling bath removed
2. filtrationThe reaction was filtered
3. washthe filtrate washed repeatedly with 1 N sodium hydroxide
4. dry with materialdried with sodium sulfate
5. customthe solvent was evaporated in vacuo
6. customThe residue was purified by column chromatography on silica gel