Cascade reductive etherification of bioderived aldehydes over Zr-based catalysts
| Title | Cascade reductive etherification of bioderived aldehydes over Zr-based catalysts |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Shinde, S, Rode, C |
| Journal | ChemSusChem |
| Volume | 10 |
| Issue | 20 |
| Pagination | 4090-4101 |
| Date Published | OCT |
| Type of Article | Article |
| Abstract | An efficient one-pot catalytic cascade sequence has been developed for the production of value-added ethers from bioderived aldehydes. Etherification of 5-(hydroxymethyl)furfural with different aliphatic alcohols over acidic Zr-montmorillonite (Zr-Mont) catalyst produced a mixture of 5-(alkoxymethyl)furfural and 2-(dialkoxymethyl)-5-(alkoxymethyl)furan. The latter was selectively converted back into 5-(alkoxymethyl)furfural by treating it with water over the same catalyst. The synthesis of 2,5-bis(alkoxymethyl)furan was achieved through a cascade sequence involving etherification, transfer hydrogenation, and re-etherification over a combination of acidic Zr-Mont and the charge-transfer hydrogenation catalyst [ZrO(OH)(2)]. This catalyst combination was further explored for the cascade conversion of 2-furfuraldehyde into 2-(alkoxymethyl)furan. The scope of this strategy was then extended for the reductive etherification of lignin-derived arylaldehydes to obtain the respective benzyl ethers in >80% yield. Additionally, the mixture of Zr-Mont and ZrO(OH)(2) does not undergo mutual destruction, which was proved by recycling experiments and XRD analysis. Both the catalysts were thoroughly characterized using BET, temperature-programmed desorption of NH3 and CO2, pyridine-FTIR, XRD, inductively coupled plasma optical emission spectroscopy, and X-ray photoelectron spectroscopy techniques. |
| DOI | 10.1002/cssc.201701275 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 7.088 |
Divison category:
Chemical Engineering & Process Development