Dihydro [c] benzazepin-3-ones via Conjugated Nitrone-Allene Precursors

K Knobloch, W Eberbach

Index: Knobloch, Karin; Eberbach, Wolfgang Organic Letters, 2000 , vol. 2, # 8 p. 1117 - 1120

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Citation Number: 25

Abstract

Treatment of o-propargylaryl nitrones with base provided 1, 2-dihydro [c] benzazepin-3-ones in good yields. The straightforward transformation is explained on the basis of a multistep rearrangement involving conjugated allene-nitrones as precursors of a 1, 7-dipolar electrocyclization process that is followed by further bond reorganizations.