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Chiral phosphoric acid-catalyzed stereodivergent synthesis of trisubstituted allenes and computational mechanistic studies

Author

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  • Jiawen Wang

    (ShanghaiTech University
    University of Chinese Academy of Sciences)

  • Sujuan Zheng

    (Nankai University)

  • Subramani Rajkumar

    (ShanghaiTech University)

  • Jinglei Xie

    (ShanghaiTech University)

  • Na Yu

    (ShanghaiTech University)

  • Qian Peng

    (Nankai University)

  • Xiaoyu Yang

    (ShanghaiTech University)

Abstract

Chiral molecules with multiple stereocenters are widely present in natural products and pharmaceuticals, whose absolute and relative configurations are both critically important for their physiological activities. In spite of the fact that a series of ingenious strategies have been developed for asymmetric diastereodivergent catalysis, most of these methods are limited to the divergent construction of point chirality. Here we report an enantioselective and diastereodivergent synthesis of trisubstituted allenes by asymmetric additions of oxazolones to activated 1,3-enynes enabled by chiral phosphoric acid (CPA) catalysis, where the divergence of the allenic axial stereogenicity is realized by modifications of CPA catalysts. Density functional theory (DFT) calculations are performed to elucidate the origin of diastereodivergence by the stacking- and stagger-form in the transition state (TS) of allene formation step, as well as to disclose a Münchnone-type activation mode of oxazolones under Brønsted acid catalysis.

Suggested Citation

  • Jiawen Wang & Sujuan Zheng & Subramani Rajkumar & Jinglei Xie & Na Yu & Qian Peng & Xiaoyu Yang, 2020. "Chiral phosphoric acid-catalyzed stereodivergent synthesis of trisubstituted allenes and computational mechanistic studies," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
  • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19294-8
    DOI: 10.1038/s41467-020-19294-8
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    Cited by:

    1. Yishou Wang & Xiaohan Zhu & Deng Pan & Jierui Jing & Fen Wang & Ruijie Mi & Genping Huang & Xingwei Li, 2023. "Rhodium-catalyzed enantioselective and diastereodivergent access to diaxially chiral heterocycles," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Jiawen Wang & Faqian He & Xiaoyu Yang, 2021. "Asymmetric construction of acyclic quaternary stereocenters via direct enantioselective additions of α-alkynyl ketones to allenamides," Nature Communications, Nature, vol. 12(1), pages 1-12, December.

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