Indubhusan Deb, Deepankar Das, D. Seidel
Jan 19, 2011
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Organic letters
Abstract
Indolines react with aromatic and heteroaromatic aldehydes to yield N-alkyl indoles in a benzoic acid catalyzed redox isomerization reaction. Azomethine ylides are intermediates in this process which was established by intramolecular [3 + 2] trapping experiments.