反应详情

Prepared analogously to Example 1 from 2-methoxy-3,4-diaminopyridine and 2-methoxy-4-cyano-benzoic acid. The product mixture obtained is digested with dichloroethane/ethanol (3:1). The undissolved material is filtered off, and the solution is evaporated and boiled with methanolic hydrochloric acid. On cooling, the product crystallizes out in the form of the hydrate.

1. customThe product mixture obtained
2. filtrationThe undissolved material is filtered off
3. customthe solution is evaporated
4. temperatureOn cooling
5. customthe product crystallizes out in the form of the hydrate