反应详情

温度

80 °C

To a solution of NaOH (5.4 g, 125 mmol) in a mixture of water/DMSO (1: 1; 15 mL) was added 2-chloro-3-(4-isopropylpiperazin-1-yl)pyrazine (2.66 g, 12 mmol; from Step 1). After being stirred at 80° C. for 2 h, the dark red solution was cooled to room temperature, extracted with EtOAc overnight to give, after drying and solvent removal in vacuo, 2.6 g (70%) of the title compound as a white solid. HPLC purity: 87%. MS m/z 223 (M+H)+. HRMS m/z calcd for C11H18N4O (M)+ 222.1481, found 222.1489.

1. temperaturethe dark red solution was cooled to room temperature
2. extractionextracted with EtOAc overnight
3. customto give
4. customafter drying
5. customsolvent removal in vacuo, 2.6 g (70%) of the title compound as a white solid