反应详情

3-Chloro-7-methoxy-1H-pyrazolo[3,4-b]quinoline was prepared from 7-methoxy-1H-pyrazolo[3,4-b]quinolin-3-amine (Example 3d) by diazotization in hydrochloric acid. The product was recrystallized from ethanol and then from acetic acid and obtained in about 25% yield as a brown solid, m.p. 296°-297° C.

1. customThe product was recrystallized from ethanol
2. customfrom acetic acid and obtained in about 25% yield as a brown solid, m.p. 296°-297° C.