反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
CONDITIONS
反应条件
- 温度
- 0 °C
PROCEDURE
实验过程
Chlorosulphonic acid (0.22 ml, 3.18 mmol) was added to suspension of 2-anilino-4-(1-methylimidazol-5-yl)pyrimidine (Example 14; 200 mg, 0.80 mmol) in thionyl chloride (4 ml) cooled at 0° C. The mixture was allowed to warm to ambient temperature, stirred for 15 minutes then heated at reflux for 20 minutes. The volatiles were removed by evaporation and the solid residue dried under high vacuum. The residue was suspended in pyridine (3 ml), cooled to −20° C. and diisopropylethyl amine (0.56 ml, 3.98 mmol) followed by 3-methoxypropyl amine (0.16 ml, 1.60 mmol) was added. The reaction mixture was allowed to warm to ambient temperature and stirred for 30 minutes. EtOAc (15 ml) was added and the mixture washed with saturated aqueous sodium hydrogen carbonate solution (15 ml) and then brine (15 ml). The solvent was removed by evaporation and the residue purified by column chromatography eluting with DCM and 2M methanolic ammonia solution (100:0 increasing in polarity to 85:15) to give the title compound 89 mg, (28%) as a solid product. NMR: 1.75 (m, 2H), 2.76 (q, 2H), 3.14 (s, 3H), 3.22-3.30 (m, 2H), 4.01 (s, 3H), 7.25 (d, 1H), 7.34 (t, 1H), 7.70 (d, 2H), 7.77 (s, 1H), 7.83 (s, 1H), 7.91 (d, 2H), 8.47 (d, 1H), 9.92 (s, 1H); m/z 4.03.
WORKUP
后处理
- temperatureto warm to ambient temperature
- temperaturethen heated
- temperatureat reflux for 20 minutes
- customThe volatiles were removed by evaporation
- customthe solid residue dried under high vacuum
- temperaturecooled to −20° C.
- additionwas added
- temperatureto warm to ambient temperature
- stirringstirred for 30 minutes
- washthe mixture washed with saturated aqueous sodium hydrogen carbonate solution (15 ml)
- customThe solvent was removed by evaporation
- customthe residue purified by column chromatography
- washeluting with DCM and 2M methanolic ammonia solution (100:0 increasing in polarity to 85:15)