Preparation of immobilized hexamine on Fe3O4/SiO2 core/shell nanoparticles: a novel catalyst for solvent-free synthesis of bis(indolyl)methanes

被引：15

作者：

Kangari, Sahar ^{[1
]}

Yavari, Issa ^{[2
]}

机构：

[1] Islamic Azad Univ, Sci & Res Branch, Dept Chem, Tehran, Iran

[2] Tarbiat Modares Univ, Dept Chem, POB 14115-175, Tehran, Iran

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2016年 / 42卷 / 12期

关键词：

Magnetically retrievable; Nano-hybrid; Bis(indolyl)methanes; Solvent-free; Silica; Hexamethylenetetramine; SYMMETRICAL BIS(INDOLYL)ALKANES; RECYCLABLE CATALYST; CARBONYL-COMPOUNDS; IONIC LIQUIDS; INDOLES; EFFICIENT; OXIDATION; ACID; GEL;

D O I：

10.1007/s11164-016-2590-z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hexamethylenetetramine covalently immobilized on silica-coated magnetic nanoparticles is prepared and characterized by XRD, FT-IR, SEM, and VSM. According to SEM pictures, the nanoparticles are mostly spherical in shape, and their size is approximately 46 nm. The catalytic performance of these magnetic nanoparticles for the synthesis of bis(indolyl)methanes was investigated. The catalyst was readily recycled by the use of an external magnetic field and can be reused four times without significant loss of activity.

引用

页码：8217 / 8226

页数：10

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