Loading...

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

711 Viewed
  1. Type of Document: Article
  2. DOI: 10.1039/c5ra25519h
  3. Publisher: Royal Society of Chemistry
  4. Abstract:
  5. 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
  6. Keywords:
  7. 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
  8. Source: RSC Advances ; Volume 6, Issue 23 , 2016 , Pages 19128-19135 ; 20462069 (ISSN)
  9. URL: http://pubs.rsc.org/is/content/articlelanding/2016/ra/c5ra25519h#!divAbstract