Method for synthesising 2,5-di(hydroxymethyl)furan and 2,5-di(hydroxymethyl)tetrahydrofuran by selective hydrogenation of furan-2,5-dialdehyde
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United States of America Patent
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Oct 25, 2016
Grant Date -
Sep 10, 2015
app pub date -
Sep 26, 2013
filing date -
Sep 27, 2012
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Abstract
A method for selective hydrogenation of furan-2,5-dialdehyde (DFF) into 2,5-di(hydroxymethyl)furan (DHMF) and into 2,5-di(hydroxymethyl)tetrahydrofuran (DHMTHF). In relation to the prior art, which uses C6 sugars or 5-hydroxymethyl furaldehyde (5-HMF) as raw materials, the method can be performed at low temperatures (lower than 120° C., preferably 80° C.), while consuming low amounts of catalyst relative to the initial reagent (in particular less than 5%, preferably less than 2% relative to the weight of the reagent). The heterogeneous catalyst used can also be recycled from one reaction to another. Finally, the choice of experimental conditions enables the selective formation of DHMF or DHMTHF.
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