反应详情

To a solution of 2-acetyl-1-benzyl-4-methoxy-6,7,8,9-tetrahydro-1H-benz[g]indole (4.68 g, 14.0 mmol) in ethanol (50 mL) was added sodium borohydride (537 mg, 14.0 mmol). After stirring for 2 h, 10% aqueous citric acid (10 mL) was added and the mixture concentrated in vacuo. The residue was dissolved in ethyl acetate, washed once with water, and once with saturated sodium bicarbonate solution. The organic layer was dried (magnesium sulfate), filtered and concentrated in vacuo to provide the title compound in quantitative yield. 1H NMR (CDCl3) δ 7.20 (m, 3H), 6.79 (d, J=7.0 Hz, 2H), 6.65 (s, 1H), 6.24 (s, 1H), 5.76 (s, 2H), 4.75 (quintet, J=6.6 Hz, 1H), 3.91 (s, 3H), 2.97 (m, 1H), 2.84 (m, 3H), 1.70 (m, 4H), 1.60 (d, J=6.6 Hz, 3H); MS ES+ m/e 336 (p+1).

1. concentrationthe mixture concentrated in vacuo
2. dissolutionThe residue was dissolved in ethyl acetate
3. washwashed once with water
4. dry with materialThe organic layer was dried (magnesium sulfate)
5. filtrationfiltered
6. concentrationconcentrated in vacuo