Methods for purifying 5-(halomethyl)furfural

摘要

The present disclosure provides methods for purifying a 5-(halomethyl)furfural composition, including 5-(chloromethyl)furfural, at operating conditions that decrease or minimize the decomposition or degradation of 5-(chloromethyl)furfural during the process. The methods may employ certain solvents, operating conditions, and/or techniques (e.g., gas stripping). The gaseous 5-(halomethyl)furfural produced from the process can be condensed or deposited to yield 5-(halomethyl)furfural in liquid or solid form. The solid 5-(halomethyl)furfural may be amorphous or crystalline.

主权项

1. A method for purifying 5-(halomethyl)furfural, comprising:
a) providing a 5-(halomethyl)furfural composition to a purification apparatus, wherein the 5-(halomethyl)furfural composition comprises 5-(halomethyl)furfural and one or more impurities, and wherein the 5-(halomethyl)furfural composition has a mass ratio of the one or more impurities to the 5-(halomethyl)furfural; b) providing a solvent to the purification apparatus, wherein the solvent has a boiling point at or above the boiling point of the 5-(halomethyl)furfural; c) contacting the 5-(halomethyl)furfural composition and the solvent to form a mixture; and d) boiling the mixture to produce a gaseous 5-(halomethyl)furfural, wherein the gaseous 5-(halomethyl)furfural has a mass ratio of the one or more impurities to the 5-(halomethyl)furfural that is lower than the mass ratio for the 5-(halomethyl)furfural composition.