Synthesis of spiro[pyrazoloquinoline-oxindoles] and spiro[chromenopyrazolo-oxindoles] promoted by guanidine-functionalized magnetic Fe3O4 nanoparticles

被引：0
作者：
Fatemeh Alemi Tameh
Javad Safaei-Ghomi
机构：
[1] Islamic Azad University,Department of Chemistry, Science and Research Branch
来源：
Journal of the Iranian Chemical Society | 2018年 / 15卷
关键词：
Fe; O; nanoparticles; Heterogeneous catalyst; Spirooxindoles; One pot reaction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Magnetic nanoparticles (MNPs) Fe3O4-immobilized guanidine (Fe3O4 MNPs-guanidine) have been used as an efficient catalyst for the preparation of spiro[pyrazoloquinoline-oxindoles] and spiro[chromenopyrazolo-oxindoles] by four-component reactions of phenylhydrazine or hydrazine hydrate, isatins, ketoesters and naphthylamine or 2-naphthol under reflux condition in ethanol. This method provides several advantages including mild reaction conditions, the applicability to a wide range of substrates, the reusability of the catalyst and low catalyst loading.
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页码：1633 / 1637
页数：4
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