Process for preparing furan-2,5-dicarboxylic acid

US10428039B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Alvaro Gordillo · Heidelberg, DE
• Martin Alexander Bohn · Mannheim, DE
• Stephan Schunk · Heidelberg, DE
• Ivana Jevtovikj · Heidelberg, DE
• Rene Backes · Lampertheim, DE
• Holger Werhan · Wiesloch, DE
• Svenia Duefert · Ludwigshafen, DE
• Richard Dehn · Ludwigshafen, DE
• Markus Piepenbrink · Telgte, DE

Key dates

• Filing date: Nov 3, 2016
• Grant date: Oct 1, 2019
• Expiry date: Nov 3, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D307/68
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Provided herein is a process for preparing furan-2,5-dicarboxylic acid. The process includes the following steps: (A-1) preparing a starting mixture comprising one, two or more carbohydrate compounds selected from the group consisting of: hexoses, oligosaccharides comprising hexose units, and polysaccharides including hexose units, and as a solvent or as a co-solvent for the carbohydrate compounds an amount of one or more carboxylic acid esters of a formula (II) and (A-2) subjecting the starting mixture to reaction conditions so that at least one of the one, two or more carbohydrate compounds reacts, and a fraction of the amount of one or more carboxylic acid esters of formula (II) is hydrolyzed, resulting in a mixture including 5-(hydroxymethyl)furfural and/or the one or more HMF esters of a formula (I), one or more carboxylic acids of a formula (III) and a remaining fraction of the amount of one or more carboxylic acid esters of formula (II).