反应详情

温度

45 °C

A mixture of 3-chloro-2-chloromethyl-5-methoxy pyrazine (141 mg, 0.73 mmol), 2-(1H-imidazol-2-yl)-pyrimidine (105 mg, 0.72 mmol) and K2CO3 (307 mg, 2.22 mmol) in DMF (10 mL) is stirred at 45° C. for 16 hours. On cooling, the reaction is quenched with saturated NH4Cl (5 mL) and extracted with DCM (3×15 mL). The combined organic layers are dried and solvent removed. PTLC separation (silica gel; 10% MeOH in DCM) gives 120 mg of 2-[1-(3-chloro-5-methoxy-pyrazin-2-ylmethyl)-1H-imidazol-2-yl]-pyrimidine as an oil. 1H NMR (CDCl3) 8.98 (d, 2H), 7.98 (s, 1H), 7.27 (s, 1H), 7.14–7.18 (m, 2H), 6.05 (s, 2H), 3.97 (s, 3H). H. 2-[1-(3,5-Dimethoxy-pyrazin-2-ylmethyl)-1H-imidazol-2-yl]-pyrimidine (Compound 9)

1. temperatureOn cooling
2. customthe reaction is quenched with saturated NH4Cl (5 mL)
3. extractionextracted with DCM (3×15 mL)
4. customThe combined organic layers are dried
5. customsolvent removed
6. customPTLC separation (silica gel; 10% MeOH in DCM)