Effective Synthesis of 5-Substituted Butenolide Derivatives by Using Cinchonidine-derived Quaternary Ammonium Phenoxide Catalyst

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Abstract

<jats:title>Abstract</jats:title> <jats:p>A vinylogous aldol-type reaction between 4-methyl-2-(trimethylsiloxy)furan and aldehydes catalyzed by cinchonidine-derived quaternary ammonium phenoxide proceeded smoothly to afford the corresponding 5-substituted butenolide derivatives in high yields with good to excellent diastereo- and enantio-selectivities.</jats:p>

Journal

  • Chemistry Letters

    Chemistry Letters 36 (1), 8-9, 2006-12-02

    Oxford University Press (OUP)

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