Three-component reaction of aldehyde, 1H-indazol-6-amine and 1,3-dicarbonyl compounds in EtOH under catalyst-free conditions, generates the corresponding pyrazolo[3,4-a]acridine, cyclopenta[b]pyrazolo[3,4-f]quinoline, indeno[1,2-b]pyrazolo[3,4-f]quinoline and benzo[h]pyrazolo[3,4-a]acridine derivatives in high yields and regioselectivity, respectively. The dicarbonyl compounds include 5,5-dimethylcyclohexane-1
                                    醛,1H-
吲唑-6-胺和1,3-二羰基化合物在无催化剂的条件下在EtOH中进行三组分反应,生成相应的
吡唑并[3,4-a] ac啶,环戊[b]
吡唑并[3, 4-f]
喹啉,
茚并[1,2-b]
吡唑并[3,4-f]
喹啉和苯并[h]
吡唑并[3,4-a] ac啶衍
生物分别具有高收率和区域选择性。二羰基化合物包括5,5-二
甲基环己烷-1,3-二酮,
环戊烷-1,3-二酮,2 H-
茚-1,3-二酮和2-羟基
萘-1,4-二酮。