Method for preparing valeric acid and valerate from levulinic acid

Abstract

The invention provides a method for preparing valeric acid and valerate from levulinic acid. The method comprises the following steps: by taking levulinic acid as a raw material, hydrogenated catalyst and trifluoromethanesulfonic acid metal salt as a catalyst, performing catalytic hydrogenolytic cleavage reaction under hydrogen atmosphere, to obtain valeric acid; continuously by taking valeric acid as a raw material and trifluoromethanesulfonic acid metal salt as a catalyst, adding alcohol compound to perform esterification reaction, to obtain valerate. The method for preparing valeric acid and valerate from levulinic acid has the characteristics of being simple in technology, mild in reaction conditions, high in product yield, easily purified, environment-friendly and the like, and is suitable for large-scale industrial production.

Description

technical field

[0001] The invention relates to the technical field of chemical products, in particular to a method for preparing valeric acid and valeric acid esters from levulinic acid. Background technique

[0002] As a class of fine chemicals, valeric acid esters have a wide range of applications, not only as food flavors, food flavoring agents, but also in the synthesis of medicines, solvents, etc. At the same time, valeric acid ester is also a new type of biomass fuel, which has good energy density and more suitable polarity, and can be completely miscible with existing transportation fuels, so it has a good and wide application prospect. At present, valeric acid ester is mainly produced by the esterification reaction of valeric acid and alcohol, and valeric acid can be produced by hydrogenation of levulinic acid, a biomass platform molecule. In the current technology, the levulinic acid is first hydrogenated into γ-valerolactone, and then the γ-valerolactone is conve...

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