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Facile Molecular Catalysis for Isomerization of Glucose to Fructose Using KMnO 4 in Water
Author(s) -
Zandany Anat,
Kumar Vijay B.,
Gedanken Aharon
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201903425
Subject(s) - isomerization , chemistry , fructose , aqueous solution , potassium permanganate , catalysis , yield (engineering) , selectivity , lewis acids and bases , sugar , hydrothermal circulation , organic chemistry , inorganic chemistry , chemical engineering , materials science , engineering , metallurgy
This research demonstrates the eco‐friendly conversion of glucose to fructose in an aqueous solution of potassium permanganate (KMnO 4 ) via a hydrothermal method. A series of reactions have been completed at different temperatures, times, and concentrations of the catalyst. The examination of the glucose to fructose transformation was determined by using quantitative HPLC, and 13 C‐NMR analyses. 29% fructose yield was found with 68% fructose selectivity, at 90 °C for an 8 h reaction in aqueous solution. The catalytic activity of KMnO 4 was correlated with its Lewis acidity. The outcomes of these experiments provided a better understanding of sugar transformations in the KMnO 4 aqueous solution. The mechanism of glucose isomerization has been proposed based on supporting transformations utilizing Lewis acids for the isomerization of glucose.