We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>-TEMPO as a Magnetically Recyclable Catalyst for Highly Selective Aerobic Oxidation of 5-Hydroxymethylfurfural into 2,5-Diformylfuran under Metal- and Halogen-Free Conditions.
- Authors
Karimi, Babak; Mirzaei, Hamid M.; Farhangi, Elham
- Abstract
A highly selective aerobic oxidation of 5-hydroxymethylfurfural (5-HMF) into 2,5-diformylfuran (DFF) by employing a magnetically separable 2,2,6,6-tetramethylpiperidine- N-oxide (TEMPO) catalyst (Fe3O4@SiO2-TEMPO) under metal- and halogen-free conditions is described. Quantitative yields of DFF with excellent selectivities as high as >99 % were achieved under several versatile reaction conditions in a catalytic system consisting of Fe3O4@SiO2-TEMPO as a catalyst, tert-butyl nitrite as a co-catalyst, acetic acid as an additive, and toluene as a solvent. The results clearly demonstrate that the present catalytic system for selective conversion of 5-HMF into DFF is comparable or even superior to the many systems based on transition-metal catalysts. In addition, the catalyst can be successfully recovered and reused in five consecutive reaction runs by an external magnetic source with keeping its catalytic performance and selectivity.
- Subjects
HYDROXYMETHYLFURFURAL; HALOGENS; OXIDATION; TETRAMETHYL compounds; PIPERIDINE
- Publication
ChemCatChem, 2014, Vol 6, Issue 3, p758
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.201301081