Synthesis and characterization of the immobilized polythiophene on magnetic carbon nanotube as a prominent catalyst for the synthesis of dihydropyrimidinone and octahydroquinazolinone derivatives

被引:14
|
作者
Akbarzadeh, Parisa [1 ]
Koukabi, Nadiya [1 ]
机构
[1] Semnan Univ, Dept Chem, Semnan 3513119111, Iran
关键词
Biginelli reaction; Carbon nanotubes; Heterogeneous catalyst; Magnetic nanoparticles; Polythiophene; ONE-POT SYNTHESIS; RECYCLABLE NANOCATALYST; EFFICIENT; BIGINELLI; COMPOSITES; AGENTS;
D O I
10.1007/s11164-020-04234-4
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this work, the immobilized polythiophene on magnetic carbon nanotube (CNT-Fe3O4-PTh) was synthesized and introduced as a novel and recoverable catalytic system. The prepared magnetic heterogeneous nanocatalyst was characterized by FT-IR, TGA, EDX, VSM, XRD, TEM, and FE-SEM. Next, the catalytic efficiency of CNT-Fe3O4-PTh was evaluated through the green synthesis of a variety of dihydropyrimidinone and octahydroquinazolinone through Biginelli reaction between aromatic aldehydes, urea/thiourea, and beta-dicarbonyl compounds under solvent-free conditions. The catalyst was magnetically recovered and recycled for five cycles without a discernible loss in its catalytic activity. Simple workup, affordability, short reaction times, mild reaction conditions, and the high yield of products are the interesting features of this project. Graphic abstract An environmentally benign nanocomposite was prepared using carbon nanotube as an inexpensive, nontoxic, and stable support in the preparation of CNT-Fe3O4-PTh, which was efficiently used as catalyst for the green synthesis of dihydropyrimidinone and octahydroquinazolinone derivatives through Biginelli reaction under solvent-free conditions. [GRAPHICS] .
引用
收藏
页码:4955 / 4969
页数:15
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