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Cover Picture: Metal‐Free Dehydration of Glucose to 5‐(Hydroxymethyl)furfural in Ionic Liquids with Boric Acid as a Promoter (Chem. Eur. J. 5/2011)
Author(s) -
Ståhlberg Tim,
RodriguezRodriguez Sergio,
Fristrup Peter,
Riisager Anders
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201190018
Subject(s) - boric acid , chemistry , dehydration , fructose , isomerization , hydroxymethyl , ionic liquid , diol , furfural , ionic bonding , organic chemistry , catalysis , biochemistry , ion
Boric acid promotes the dehydration of glucose to 5‐(hydroxy)methylfurfural in ionic liquids. Computational analyses by DFT calculations show a significant decrease in energy for the isomerization of glucose to fructose when the sugars are bound to boric acid and isotopic labeling NMR studies confirm that the mechanism proceeds via an ene–diol intermediate as described by A. Riisager, P. Fristrup et al. in their Full Paper on page 1456 ff.