Chem. J. Chinese Universities

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Synthesis of Benzo-Thioethers Based on Intramolecular Selective C-S Cleavage of Arylthianthreniums

NAN Jiang,XU Kailun,YAN Qiang   

  1. Shaanxi University of Science and Technology
  • Received:2024-12-11 Revised:2025-02-06 Online:2025-02-14 Published:2025-02-14
  • Contact: Jiang Nan E-mail:nanjiang@sust.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation(No.22171171),Innovative Talent Promotion Plan-Young Science and Technology Star Project (No.2022KJXX-15), and Shaanxi Provincial Association for Science and Technology (No.20200605)

Abstract: Here reported is an intramolecular nucleophilic substitution reaction of aryl-thianthrenium salts, which conducts the selective cleavage of C-O and C-S chemical bonds. This finding represents a novel chemical property and conversion with aryl-thianthreniums, rapidly assembling the highly conjugated tribenzo-thioester compounds. Of note, this developed methodology is charactered by excellent functional group tolerance, good productivities, and metal-free trait. This conversion delivers 23 examples of structurally innovative nine-membered thioethers, which puts forward an alternative synthesizing route for the widely used crown ethers.

Key words: Arylthianthreniums; C—S Bond cleavage, Benzo-thioesters

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