反应详情

At room temperature, 23.3 g of N,N-dimethyl-N-[2-(7-nitro-1H-indazol-4-yl)ethenyl]amine and 35.0 g of hydroxylamine-orthosulfonic acid are agitated in 400 ml of water for 24 hours. The precipitate is suctioned off, washed with water, and recrystallized from ethyl acetate, thus obtaining 16.0 g of 2-(7-nitro-1H-indazol-4-yl)acetonitrile, mp 198°-200° C.

1. washwashed with water
2. customrecrystallized from ethyl acetate