反应详情

To a solution of (3-methoxyphenyl)acetonitrile (3.0 g, 20.0 mmol) in DMSO (120 ml) was added 3 drops of 15-crown-5 and sodium hydride (60% w/w dispersion in mineral oil, 1.6 g) at room temperature and the reaction mixture was stirred for 30 min. Sodium iodide (3.6 g 24 mmol) and 1,3-dibromopropane (8.0 g 40 mmol) were added and the mixture stirred overnight. 2N HCl (50 ml) was added and the mixture extracted with ether (100 ml×2). The combined extracts were washed with water (100 ml×2) and brine (100 ml ), dried (MgSO4) and concentrated in vacuo. The residue was purified by column chromatography (SiO2, 300 g; hexane/ethyl acetate (20/1)) to afford 2.10 g (56%) of titled compound as a colorless oil.

1. stirringthe mixture stirred overnight
2. extractionthe mixture extracted with ether (100 ml×2)
3. washThe combined extracts were washed with water (100 ml×2) and brine (100 ml )
4. dry with materialdried (MgSO4)
5. concentrationconcentrated in vacuo
6. customThe residue was purified by column chromatography (SiO2, 300 g; hexane/ethyl acetate (20/1))