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Catalysts 2017, 7(6), 182;

Insights into the Metal Salt Catalyzed 5-Ethoxymethylfurfural Synthesis from Carbohydrates

Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China
Author to whom correspondence should be addressed.
Academic Editor: Christophe Len
Received: 26 April 2017 / Revised: 24 May 2017 / Accepted: 27 May 2017 / Published: 8 June 2017
(This article belongs to the Special Issue Catalysis of Biomass-Derived Molecules)
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The use of common metal salts as catalysts for 5-ethoxymethylfurfural (EMF) synthesis from carbohydrate transformation was performed. Initial screening suggested AlCl3 as an efficient catalyst for EMF synthesis (45.0%) from fructose at 140 °C. Interestingly, CuSO4 and Fe2(SO4)3 were found to yield comparable EMF at lower temperature of 110 to 120 °C, and high yields of ethyl levulinate (65.4–71.8%) were obtained at 150 °C. However, these sulfate salts were inactive in EMF synthesis from glucose and the major product was ethyl glucoside with around 80% yield, whereas EMF of 15.2% yield could be produced from glucose using CrCl3. The conversion of sucrose followed the accumulation of the reaction pathways of fructose and glucose, and a moderate yield of EMF could be achieved. View Full-Text
Keywords: carbohydrate; 5-ethoxymethylfurfural; catalytic conversion; metal salt; Lewis acid carbohydrate; 5-ethoxymethylfurfural; catalytic conversion; metal salt; Lewis acid

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Yu, X.; Gao, X.; Tao, R.; Peng, L. Insights into the Metal Salt Catalyzed 5-Ethoxymethylfurfural Synthesis from Carbohydrates. Catalysts 2017, 7, 182.

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