What question did this study set out to answer?

The research aims to develop a method for synthesizing unsymmetrical C2,3-bis(sulfenyl)indoles using bimetallic catalysis.

Synthesis of Unsymmetrical C2,3-Bis-sulfenylated Indoles via Bimetallic Cu/Fe Relay Catalysis

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Demonstrates a bimetallic catalysis approach to create bis-sulfenylated indoles, suggesting a new efficient method for heterocyclic synthesis.

The research aims to develop a method for synthesizing unsymmetrical C2,3-bis(sulfenyl)indoles using bimetallic catalysis.
Employs a one-pot synthesis strategy.
Utilizes copper for C-S coupling and iron for electrophilic sulfenylation.
Explores a wide range of functional groups in substrates.
No intermediate isolation required.
Achieves high step economy in the synthesis process.
Demonstrates broad substrate scope with good tolerance for various functional groups.
Provides scalability for gram-scale synthesis.
Facilitates late-stage functionalization of complex bioactive molecules.

Lu et al. (2026) studied this question.

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Demonstrates a bimetallic catalysis approach to create bis-sulfenylated indoles, suggesting a new efficient method for heterocyclic synthesis.