Electrochemical Synthesis of 4-Sulfenylisocoumarins via Radical Cascade Annulation of o- Alkynylbenzoates with Thiophenols
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The first example of directly using abundant, stable, and inexpensive thiophenols as sulfenylating agents for the construction of valuable and structually diverse 4-sulfenylisocoumarins under electrochemical conditions is described. Compared to the existing methods, this approach avoids the use of toxic, moisture-sensitive, pre-functionalized reagents and significantly broadens the substrate scope.
