Total syntheses of the coumarin-containing natural products pimpinellin and fraxetin using Au(I)-catalyzed intramolecular hydroarylation (IMHA) chemistry

Aymeric Cervi, Paul Aillard, Nourallah Hazeri, Laurent Petit, Christina L.L. Chai, Anthony C. Willis, Martin G. Banwell*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    52 Citations (Scopus)

    Abstract

    The title natural products (1 and 2, respectively) have been synthesized by Au(I)-catalyzed intramolecular hydroarylation (IMHA) of the relevant aryl propiolate esters (e.g., 13), which were themselves formed by reaction of the corresponding phenols with either 3-(trimethylsilyl)propiolic acid or propiolic acid and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride or dicyclohexylcarbodiimide. (±)-Purpurasol (3) was readily derived from fraxetin (2) by established procedures.

    Original languageEnglish
    Pages (from-to)9876-9882
    Number of pages7
    JournalJournal of Organic Chemistry
    Volume78
    Issue number19
    DOIs
    Publication statusPublished - 4 Oct 2013

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