反应详情

温度

25 °C

A mixture of 2,4-dichloro-pyrimidine-5-carboxamide (2 g), bicyclo[1.1.1]pentan-1-amine hydrochloride (1.18 g), sodium bicarbonate (1.75 g), and NMP (10 mL) was stirred at 25° C. for 24 h. Water (10 mL) was charged maintaining the reaction temperature less than 30° C., and the mixture was stirred at 25° C. for 2 h. The suspension was filtered, and washed with NMP:water (1:1 10 mL), then water (2×10 mL), and dried in a vacuum oven at 40° C. with nitrogen sweep to give 4-(bicyclo[1.1.1]pentan-1-ylamino)-2-chloropyrimidine-5-carboxamide as a white solid (1.97 g, 83% yield). 1H NMR (DMSO-d6) δ 2.14 (s, 6H), 2.51-2.53 (m, 1H), 7.76 (br. s., 1H), 8.23 (br. s., 1H), 8.60 (s, 1H), 9.57 (s, 1H).

1. temperaturemaintaining the reaction temperature less than 30° C.
2. stirringthe mixture was stirred at 25° C. for 2 h
3. filtrationThe suspension was filtered
4. washwashed with NMP:water (1:1 10 mL)
5. dry with materialwater (2×10 mL), and dried in a vacuum oven at 40° C. with nitrogen sweep