Reaction of the pyrano[3.4‐b]indolones 1a‐d with aniline, benzylamine, phenylethylamine and propylamine at 200–210 °C yields the 2.3.4.9‐tetrahydro‐1H‐pyrido[3.4‐b]indol‐1‐ones 5a‐j, which can be converted to the 2.3.4.9‐tetrahydro‐1H‐pyrido[3.4‐b]indoles 6a‐j by reduction with LiAlH4. After treatment with methylamine and 2 only the amides 3 and 4 could be isolated. Unsubstituted tetrahydro‐β‐carboline
吡喃并 [3.4-b]
吲哚酮 1a-d 与
苯胺、
苄胺、苯
乙胺和
丙胺在 200–210 °C 下反应生成 2.3.4.9-四氢-1H-
吡啶并 [3.4-b] indole-1-ones 5a- j,可通过 LiAlH4 还原转化为 2.3.4.9-四氢-1H-
吡啶并 [3.4-b]
吲哚 6a-j。用
甲胺和 2 处理后,只能分离出酰胺 3 和 4。未取代的四氢 - β - 咔啉 7 可通过 6c 的区域选择性脱苄获得。