Abstract
The initially formed N-phenylnitrone-intermediates are converted by a tandem-reaction (cycloaddition, Cope rearrangement, retro-Michael addition, and indolization) to 2-vinylindoles 7 . Thus these indoles can be synthesized simply and stereoselectively in a one-pot reaction from N-phenylhydroxylamine 4 , aldehydes 5 , and electron-deficient allenes 6 .
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