反应详情

To cold concentrated sulfuric acid (100 ml) was added, in a single portion, 7-nitro-1,2,3,4-tetrahydroisoquinoline-1-acetonitrile (12.6 g, 58.0 mmol). The reaction mixture was stirred for 6 h at that temperature after which time all the starting material had dissolved. The reaction mixture was poured on ice and the solution made basic with concentrated ammonium hydroxide at such a rate as to control the exotherm. The precipitated product was collected, washed with copious amounts of water, and air-dried to give the title compound as a red solid (12.1 g, 89%), m.p. 246-7° C. (dec.).

1. dissolutionhad dissolved
2. additionThe reaction mixture was poured on ice
3. customThe precipitated product was collected
4. washwashed with copious amounts of water
5. customair-dried