Synthesis of novel ferrocenyl-containing pyrazolo[4,3-c]quinolines
作者:Günseli Turgut Cin、Seda Demirel、Abban Cakici
DOI:10.1016/j.jorganchem.2010.10.006
日期:2011.1
Synthesis of novel ferrocenyl-substituted pyrazolo[4,3-c]quinolines via the Pictet–Spengler reaction is reported. Iminium intermediate formed by the condensation of pyrazole-based arylamine substrates with ferrocenecarboxaldehyde in acidic medium, undergoes 6-endo cyclization with sufficiently reactive aromatic moiety to form a pyrazolo[4,3-c]quinoline ring.
Construction of substituted pyrazolo[4,3‐c]quinolines via [5+1] cyclization of pyrazole‐arylamines with alcohols/amines in one pot
作者:Dong Tang、Yangxiu Mu、Zafar Iqbal、Lili He、Rui Jiang、Jing Hou、Zhixiang Yang、Minghua Yang
DOI:10.1002/jhet.4420
日期:2022.5
for the synthesis of pyrazolo[4,3-c]quinoline derivatives, by reacting (1H-pyrazol-5-yl)anilines and readily available alcohols/amines. A wide range of substrates with diverse functional groups were smoothly converted to the corresponding products in moderate to good yields, under optimal reaction conditions. Furthermore, the strategy also proceeded well with thiol and aminoacid to access pyrazolo[4
通过使 (1 H -pyrazol-5-yl) 苯胺与容易获得的醇/胺反应,开发了一种用于合成吡唑并 [4,3-c] 喹啉衍生物的有效方案。在最佳反应条件下,具有不同官能团的多种底物以中等至良好的产率顺利转化为相应的产物。此外,该策略在硫醇和氨基酸方面也取得了很好的进展,以获取吡唑并[4,3-c]喹啉衍生物。
An approach for the synthesis of pyrazolo[4,3-c]quinoline derivatives has been developed by the combination of pyrazole-arylamines and β-keto esters via cleavage of C–C bonds. The strategy shows good tolerance and compatibility with a wide range of functional groups. Moreover, this method features simple conditions, generates a series of alkyl substituted pyrazolo[4,3-c]quinoline, and provides the desired