反应详情

To a stirred solution of lithium aluminium hydride (6.1 g, 250 mmol) in THF (300 mL) was added a solution of methyl 2,3-dihydrobenzofuran-6-carboxylate (17.8 g, 100 mmol) in THF at 0□. The mixture was stirred at room temperature for 1 h. A saturated aqueous NaOH solution was added and the mixture was extracted with ethyl acetate. The combined organic layers were washed with brine and dried over Na2SO4, filtered and concentrated to afford (2,3-dihydrobenzofuran-6-yl)methanol (13.8 g, 92.0% yield). 1H NMR (400 MHz, CDCl3) δ: 7.17 (d, J=7.2, 1H), 6.84 (d, J=7.2, 1H), 6.81 (s, 1H), 4.62 (s, 2H), 4.58 (t, J=8.4, 2H), 3.20 (t, J=8.4, 2H),) 1.67 (br s, 1H).

1. extractionthe mixture was extracted with ethyl acetate
2. washThe combined organic layers were washed with brine
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated