Sequential Chiral Induction and Regulator‐Assisted Chiral Memory of Pillar[5]arenes

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  • Shixin Fa
    Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
  • Kouichi Egami
    Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
  • Keisuke Adachi
    Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
  • Kenichi Kato
    Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan
  • Tomoki Ogoshi
    Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan

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<jats:title>Abstract</jats:title><jats:p>Chirality transfer is widely observed in life processes, and many artificial chiral transfer systems have been developed. In these systems, chiral information is transferred from chiral inducers to chiral acceptors by a direct chiral induction process and a direct chiral memorization process. We have developed ternary nondirect chiral transfer systems based on pillar[5]arenes, in which a third factor was introduced as a regulator. The planar chirality of an acceptor was induced and memorized by a chiral inducer with precise control by a regulator. In the chiral induction period, the feed sequence of the chiral inducer and regulator affected the chiral induction behavior of the chiral acceptor. The chiral memory ability of the acceptor was substantially improved by the combined action of the chiral inducer and regulator.</jats:p>

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