反应详情

温度

70 °C

After 10 ml of ammonia gas was dissolved in 50 ml of ethanol at −78° C., 15 ml of a solution of 2.40 g (9.07 mmol) of 4-allylamino-2-chloro-6-nitroquinazoline in THF was added thereto, followed by stirring overnight in a sealed tube at 70° C. 150 ml of water was added to the reaction solution, and then crystals thus precipitated were filtered out, followed by recrystallization from ethyl acetate-hexane to give 1.88 g (84.6%) of the title compound.

1. customcrystals thus precipitated
2. filtrationwere filtered out
3. customfollowed by recrystallization from ethyl acetate-hexane