PROCESS FOR PREPARING 5-HYDROXYMETHYLFURFURAL FROM CETOSIS SUGARS OBTAINED BY ISOMERIZING ALDOSED SUGARS

摘要

Process for the preparation of ketotic sugars, characterized in that: 1 / at least one aldose-type sugar or a solution or a suspension in the water of this sugar is solubilized in at least one organic solvent; 2 / then the organic solution obtained is brought into contact with a catalyst, in order to convert the aldose into ketose by an isomerization reaction; 3 / then, optionally, the solution of sugars obtained is dried; 4 / and finally, optionally, the isomerization catalyst is removed by filtration.