Abstract
We report herein intramolecular (3+2) cycloadditionreactions between ynamides as three-atom components and benzyne. In theseintramolecularreactions, the two-bond formation is realized by exploiting benzyne precursors thatcontain a chlorosilyl group as alinking functionality. This method thushighlights the ambivalent character of the intermediate indolium ylide, which exhibitsboth nucleophilic and electrophilic properties at its C2 atom.
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