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Magnetic starch nanocomposite as a green heterogeneous support for immobilization of large amounts of copper ions: Heterogeneous catalyst for click synthesis of 1,2,3-triazoles
Pourjavadi, A ; Sharif University of Technology
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- Type of Document: Article
- DOI: 10.1039/c5ra25519h
- Publisher: Royal Society of Chemistry
- Abstract:
- A new magnetic heterogeneous copper catalyst was prepared by immobilization of copper ions onto a cross-linked polymeric nanocomposite composed of starch grafted polyacrylamide and functionalized Fe3O4 magnetic nanoparticles. The resulting support was loaded with large amounts of copper ions (1.6 mmol g-1). The prepared catalyst is highly active in Huisgen 1,3-dipolar cycloaddition reactions of different azides and alkynes at low catalyst amounts. Various corresponding 1,2,3-triazoles were produced with high yields in mild conditions. The catalyst was easily recovered and reused for ten cycles of reaction and no significant loss of catalytic activity was observed
- Keywords:
- Catalysts ; Copper ; Cycloaddition ; Ions ; Magnetism ; Metal ions ; Nanocomposites ; Nanomagnetics ; Nanoparticles ; Starch ; 1 ,2 , 3 -triazoles ; 1 ,3-Dipolarcycloaddition ; Click synthesis ; Copper catalyst ; Heterogeneous catalyst ; Magnetic nano-particles ; Magnetic starches ; Polymeric nanocomposites ; Catalyst activity
- Source: RSC Advances ; Volume 6, Issue 23 , 2016 , Pages 19128-19135 ; 20462069 (ISSN)
- URL: http://pubs.rsc.org/is/content/articlelanding/2016/ra/c5ra25519h#!divAbstract