合成4h -吡喃和四氢- 4h -铬衍生物的新型生物聚合物纳米磁性催化剂

IF 0.8 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

South African Journal of Chemistry-Suid-Afrikaanse Tydskrif Vir Chemie Pub Date : 2020-01-01 DOI:10.17159/0379-4350/2020/v73a9

A. Mohammadzadeh, A. P. Marjani, A. Zamani

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引用次数: 18

摘要

在本研究中，我们设计并合成了一种新的磁性可回收的Ag/Fe3O4@starch纳米催化剂。采用XRD、EDX、VSM、FT-IR、TEM和TGA等分析技术对纳米催化剂的成功合成和结构进行了验证和评价。研究了Ag/Fe3O4@starch对四氢吡喃和四氢-四氢铬的影响和效率，该反应采用不同醛、丙二腈和1,3-二酮酯或环1,3-二酮三组分缩合反应。磁性纳米催化剂易于回收和重复使用，即使在多达五次运行后也具有较高的催化活性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Novel Biopolymer-based Nanomagnetic Catalyst for the Synthesis of 4H-pyran and Tetrahydro-4H-chromene Derivatives

In the present study, we have designed and synthesized a new magnetically recoverable, nanocatalyst of Ag/Fe3O4@starch. The successful synthesis and the structure of the nanocatalyst were confirmed and evaluated with several analytical techniques including XRD, EDX, VSM, FT-IR, TEM and TGA. The impact and efficiency of Ag/Fe3O4@starch were successfully investigated in the one-pot synthesis of desired 4H-pyrans and tetrahydro-4H-chromenes using three-component condensation of various aldehydes, malononitrile, and 1,3-diketoesters or cyclic 1,3-diketones. The magnetic nanocatalyst was easily recovered and reused with high catalytic activity even after up to five runs.

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来源期刊

South African Journal of Chemistry-Suid-Afrikaanse Tydskrif Vir Chemie 化学-化学综合

CiteScore

3.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Original work in all branches of chemistry is published in the South African Journal of Chemistry. Contributions in English may take the form of papers, short communications, or critical reviews.