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: A practical and novel approach for the regioselective synthesis of 3-arylthioindole derivatives has been accomplished using a combination of indole substrates with p-toluene sulfonyl hydrazide. This methodology employs NIS as the oxidant and PPh3 as the reductant to give the desired 3-arylthioindoles in good to excellent yields. This method offers several advantages, including simplicity, operational ease, and broad substrate scope.
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Yadav et al. (2024) studied this question.
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