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A facile, two step procedure for the preparation of ethyl 5-iodo-1H-indole-2-carboxylate (1) from commercially available ethyl 1H-indole-2-carboxylate is described herein, employing a regioselective C3, C5-bisiodination followed by zinc-mediated C3-dehalogenation.
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Beshore et al. (2003) studied this question.
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