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Stereodivergent dehydrative allylation of β-keto esters using a Ru/Pd synergistic catalyst

Author

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  • Thien Phuc Le

    (Nagoya University)

  • Shinji Tanaka

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Masahiro Yoshimura

    (Aichi Gakuin University)

  • Kazuhiko Sato

    (National Institute of Advanced Industrial Science and Technology (AIST))

  • Masato Kitamura

    (Nagoya University)

Abstract

α-Alkylation of a β-keto ester is a frequently used reaction for carbon–carbon bond formation. However, extension to a stereoselective reaction remains a significant challenge, because the product easily racemizes under acidic or basic conditions. Here, we report a hybrid system consisting of Pd and Ru complexes that catalyzes the asymmetric dehydrative condensation between cinnamyl-type allylic alcohols and β-keto esters. α-Non-substituted β-keto ester can be allylated to afford an α-mono-substituted product with high regio-, diastereo-, and enantioselectivity. No epimerization occurs owing to the nearly neutral conditions, which is achieved by a rapid proton transfer from Pd-enolate formation to Ru π-allyl complex formation. Four diastereomers can be synthesized on demand by changing the stereochemistry of the Pd or Ru complex. Eight stereoisomers with three adjacent stereogenic centers can be synthesized by employing diastereoselective reduction of the ketone in the products. The formal synthesis of (+)-pancratistatin demonstrates the utility of the reaction.

Suggested Citation

  • Thien Phuc Le & Shinji Tanaka & Masahiro Yoshimura & Kazuhiko Sato & Masato Kitamura, 2022. "Stereodivergent dehydrative allylation of β-keto esters using a Ru/Pd synergistic catalyst," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33432-4
    DOI: 10.1038/s41467-022-33432-4
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    Cited by:

    1. Cong Fu & Ling He & Hui Xu & Zongpeng Zhang & Xin Chang & Yanfeng Dang & Xiu-Qin Dong & Chun-Jiang Wang, 2024. "Modular access to chiral bridged piperidine-γ-butyrolactones via catalytic asymmetric allylation/aza-Prins cyclization/lactonization sequences," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Ruimin Lu & Qinglin Zhang & Chang Guo, 2023. "Catalytic stereodivergent allylic alkylation of 2-acylimidazoles for natural product synthesis," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Chang You & Mingying Shi & Xueling Mi & Sanzhong Luo, 2023. "Asymmetric α-allylic allenylation of β-ketocarbonyls and aldehydes by synergistic Pd/chiral primary amine catalysis," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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