A new method for direct α-functionalization of 2,3-disubstituted indoles has been developed. The present reaction provides α-acetoxy indole derivatives regioselectively under mild conditions using commercially available and nontoxic iodine reagents. This reaction is a useful synthetic tool because obtained α-acetoxy products can be transformed into various functionalized indoles by substitution reactions with nucleophiles.
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Zaimoku et al. (2012) studied this question.
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