Method for preparing bis-(5-formylfurfuryl)ether from 5-hydroxymethylfurfural

The invention relates to a method for preparing bis-(5-formylfurfuryl)ether from 5-hydroxymethyl furfural. The method comprises the step of dehydrating 5-hydroxymethylfurfural in the presence of a catalyst to obtain bis-(5-formylfurfuryl)ether, wherein the catalyst is metal trifluoromethanesulfonate. The 5-hydroxymethylfurfural used in the method can be conveniently obtained from biomass. The usedmetal trifluoromethanesulfonate catalyst has strong water resistance, can well maintain catalytic activity, and realizes high yield. The catalyst is easy to recover and can be repeatedly used, and the catalytic activity is not reduced. The method disclosed by the invention has the advantages of high conversion activity, high yield and excellent stability, reaction products are simple to separate,and the high-purity bis-(5-formylfurfuryl)ether can be obtained. Meanwhile, the prepared bis-(5-formylfurfuryl)ether can be used as a raw material for preparing polyamide materials. 本发明涉及一种由5-羟甲基糠醛制备双-(5-甲酰基糠基)醚的方法，所述包括：在催化剂的