反应详情

温度

40 °C

A mixture of 5-methyl-1H-pyrazol-3-amine (3.00 g, 30.9 mmol), 2,4,5-trichloropyrimidine (5.67 g, 30.9 mmol, 1 equiv.) and Na2CO3 (3.60 g, 34.0 mmol, 1.1 equiv.) in EtOH (100 mL) was heated at 40° C. for 24 h. The solvent was removed in vacuo. The resulting residue was partitioned between EtOAc (350 mL) and water (100 mL). The EtOAc layer was washed with water (3×), saturated aqueous NaCl (1×) and dried over Na2SO4. The resulting EtOAc solution was concentrated in vacuo, providing the product 2,5-dichloro-N-(5-methyl-1H-pyrazol-3-yl)pyrimidin-4-amine;

1. customThe solvent was removed in vacuo
2. customThe resulting residue was partitioned between EtOAc (350 mL) and water (100 mL)
3. washThe EtOAc layer was washed with water (3×), saturated aqueous NaCl (1×)
4. dry with materialdried over Na2SO4
5. concentrationThe resulting EtOAc solution was concentrated in vacuo