Synthese von 2,3‐unsubstituierten, N‐acylierten Indolen durch sigmatrope[3,3]‐Umlagerung von O‐Vinyl‐N‐phenylhydroxylaminderivaten

Synthesis of 2,3‐Unsubstituted N‐Acylindoles by [3,3]‐Rearrangement of the N‐Phenyl‐O‐vinylhydroxylamine Derivatives Summary, Treatment of N‐phenylhydroxamic acids with vinylacetate in the presence of Li2PdCl4 affords 2,3‐unsubstituted N‐acylindoles via hetero‐Cope‐rearrangement of the intermediate N‐O‐vinylhydroxylamine derivatives.