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AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorsMarc Crockatt, Roman Latsuzbaia, Johan Urbanus, Earl Lawrence Vincent Goetheer, Richard Antonius Van Heck
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The invention is directed to a process for preparing maleic acid or a derivative thereof, said process comprising a step b) of oxidizing 5-hydroxy-2(5H)-furanone and/or cis-β-formylacrylic acid to maleic acid or a derivative thereof by contacting 5-hydroxy-2(5H)-furanone and/or cis-β-formylacrylic acid with molecular oxygen (O2) in the presence of a catalyst. In a particular embodiment, step b) is preceded by a step a) of oxidizing a furanic compound according to formula I into 5-hydroxy-2(5H)-furanone and/or cis-β-formylacrylic acid, wherein R1 is H, CH2OH, CO2H or CHO and R2 is H, OH, C1-C6 alkyl or O(C1-C6 alkyl), or esters, ethers, amides, acid halides, anhydrides, carboximidates, nitriles, and salts thereof.
A process for preparing maleic acid or a derivative thereof, said process comprising a step of oxidizing 5-hydroxy-2(5H)-furanone and/or cis-β-formylacrylic acid to maleic acid or a derivative thereof by contacting 5-hydroxy-2(5H)-furanone and/or cis-β-formylacrylic acid with molecular oxygen (O2) in the presence of a catalyst.
Dependencies are inferred from the claim text.