反应详情

2.2 g. of 5-chloro-2-methylpyrazolo[1,5-a]pyrido[3,4-e]pyrimidine of Example 18 are refluxed in 10 ml. of n-butylamine for 12 hours. The excess amine is evaporated and the residue treated with 10 ml. of water. N-Butyl-2-methylpyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-5-amine is filtered off, yield: 2 g. (80%); m.p. 116.1° (methanol).

1. customThe excess amine is evaporated
2. additionthe residue treated with 10 ml
3. filtrationN-Butyl-2-methylpyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-5-amine is filtered off