Oxidative dearomatization of 3-substituted indoles with sulfonium salts: direct access to 3-hydroxyoxindoles

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Green Chem., 2025, Advance Article
DOI: 10.1039/D5GC00780A, Communication
Sudipta Baur, Amitava Hazra, Joydev K. Laha, Srimanta Manna
A new approach has been developed for the oxidative dearomatization of 3-substituted indoles into 3-hydroxyoxindoles, which employs an in situ sulfonium intermediate generated via the activation of DMSO with alkyl halide.
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