A simple and straightforward protocol has been accomplished for synthesis of pyrazolo[3,4-b]pyridines by reacting 5-amino-1-phenyl-3-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde (1) and β-enaminoketones (2) promoted by Iron(III)chloride. This protocol was also able to produce quinolines (5) by the reaction of O-nitrobenzaldehydes and β-enaminoketones. Simple reaction conditions, high compatibility and excellent yields are the advantages of this protocol.

中文翻译：

---

氯化铁（III）诱导合成吡唑并吡啶和喹啉

通过使5-氨基-1-苯基-3-（三氟甲基）-1H-吡唑-4-甲醛（1）与β-烯酮反应合成吡唑并[3,4- b ]吡啶的简单而直接的方法（2）由三氯化铁促进。该方案还能够通过O-硝基苯甲醛与β-烯酮的反应生成喹啉（5）。简单的反应条件，高的相容性和优异的产率是该方案的优点。