期刊
RESEARCH ON CHEMICAL INTERMEDIATES
卷 42, 期 7, 页码 6391-6406出版社
SPRINGER
DOI: 10.1007/s11164-016-2470-6
关键词
Fe3O4@SiO2-SO3H NPs; Spirooxindoles; Multicomponent reactions; One-pot synthesis; Core-shell
资金
- department of chemistry, Science and Research branch, Islamic Azad University, Tehran, Iran
Sulfuric acid and (3-aminopropyl)-triethoxysilane were successfully attached to the core-shell structure of Fe3O4@SiO2 nanoparticles separately. The prepared nanoparticles were characterized by vibrating sample magnetometer, powder X-ray diffraction, scanning electronic microscopy, thermal gravimetric analysis, energy dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. To compare the efficiency of the two prepared functionalized magnetic nanoparticles, they were employed as catalysts for the synthesis of spirooxindole containing chromene ring fragments in one-pot four-component reactions. Sulfuric acid-functionalized magnetic nanoparticles showed high catalytic activity in mild reaction conditions and short reaction times and excellent yields of products. The catalyst was easily separated using a magnet and reused for several cycles of reactions without any significant loss of catalytic activity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据