, Volume 62, Issue 3, pp 830-835
Date: 07 Jan 2014

Conversion of carbohydrates to 5-hydroxymethylfurfural: the nature of the observed selectivity decrease and microwave radiation effect

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The special NMR monitoring technique showed that conversion of glucose and fructose to 5-hydroxymethylfurfural in ionic liquids is highly selective and the formation of by-products, mainly oligomers, is related to further dehydration of 5-hydroxymethylfurfural. The replacement of usual heating by microwave irradiation provides high conversion of glucose (93%) and good yield of 5-hydroxymethylfurfural (85%) at 80 °C within 2.5 min.