反应详情

A mixture of 4-(4-fluorophenyl)pyrimidine-5-carbonitrile (1.0 equiv.) and Raney-nickel (20 mol %) in MeOH (0.1 M) was degassed under vacuum and followed by the addition of 30% ammonium hydroxide (10 equiv.). The resulting mixture was hydrogenated with hydrogen gas at room temperature overnight. The mixture was filtered through a pad of celite and the cake was rinsed with MeOH. The filtrate was concentrated and further dried to give a brown oil, which was purified by silica gel column chromatography (0-10% MeOH in DCM, 25 g column) to give the title compound (32% yield) as a yellow solid. 1H NMR (400 MHz, CDCl3) δ (ppm) 9.19 (s, 1H), 8.88 (s, 1H), 7.71-7.78 (m, 2H), 7.17-7.24 (m, 2H), 3.99 (s, 2H), 1.41 (br. s., 2H). MS (ESI) m/z 204.1 [M+1]+.

1. customwas degassed under vacuum
2. filtrationThe mixture was filtered through a pad of celite
3. washthe cake was rinsed with MeOH
4. concentrationThe filtrate was concentrated
5. customfurther dried
6. customto give a brown oil, which
7. customwas purified by silica gel column chromatography (0-10% MeOH in DCM, 25 g column)