反应详情

2-{[(2-chloro-3-nitrophenyl)methyl]sulfanyl}-6-methylpyrimidin-4-ol (150 mg, 481 mmol) was dissolved in 1:1 EtOH/DCM (6 mL). Hydrazine hydrate (224 mL, 7.2 mmol) and catalytic amount of Ni-Raney solution in water were added. The mixture was stirred overnight at room temperature. The solid material was filtered on Celite and washed with methanol and ethyl acetate. The filtrate was evaporated. The residue was dissolved in DCM and purified on silica gel using 10% DCM/MeOH to afford 2-{[(3-amino-2-chlorophenyl)methyl]sulfanyl}-6-methylpyrimidin-4-ol (10 mg, 7% yield); 1H NMR (400 MHz, DMSO-d6): δ 2.21 (s, 3H), 4.39 (s, 2H), 5.41 (s, 2H), 5.98 (bs, 1H), 6.70-6.75 (m, 2H), 6.95 (t, J=7.7 Hz, 1H); LRMS (ES+) m/z 282 (100%, M+1), 284 (35%, M+3).

1. filtrationThe solid material was filtered on Celite
2. washwashed with methanol and ethyl acetate
3. customThe filtrate was evaporated
4. dissolutionThe residue was dissolved in DCM
5. custompurified on silica gel using 10% DCM/MeOH