A unique pathway to platform chemicals: aldaric acids as stable intermediates for the synthesis of furandicarboxylic acid esters

Nicolaas van Strien, Sari Rautiainen (Corresponding Author), Martta Asikainen, David A. Thomas, Juha Linnekoski, Klaus Niemelä, Ali Harlin

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    2,5-Furandicarboxylic acid (FDCA) has received attention as an emerging bio-based building block with many applications, especially in renewable polyesters. The common route to FDCA uses the unstable 5-hydroxymethylfurfural (HMF) as an intermediate. Here, we present an alternative route to FDCA and its esters using C6 aldaric acids as stable intermediates. Aldaric acids, or sugar diacids, can be obtained by the oxidation of C6 sugars or uronic acids from pectin. Subsequent dehydration of aldaric acids by solid acid catalysts in butanol produces furancarboxylates. Using silica-supported acid catalysts, over 90% yields of furancarboxylates were achieved with the selectivity to FDCA and its esters reaching 80%.
    Original languageEnglish
    Pages (from-to)8271-8277
    Number of pages7
    JournalGreen Chemistry
    Volume22
    Issue number23
    DOIs
    Publication statusPublished - 7 Dec 2020
    MoE publication typeA1 Journal article-refereed

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