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As easy as 1→2→3: Generation (1→2) and subsequent capture (2→3) of the reactive α,β-unsaturated nitrone species 2 with silyl enol ethers, silanes, and stannanes leads to a facile and direct entry to a variety of highly substituted N-hydroxyindoles 3 through carbon–carbon bond formation.
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Nicolaou et al. (2006) studied this question.
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