Zur Synthese von Derivaten des Pyrido[1,
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Wolfram Maicr; Wolfgang Eberbach; Hans Fritz
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Article
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1991
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John Wiley and Sons
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German
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## On the Synthesis of Derivatives of Pyrido[l,Z-ulazepine The conjugated pyridinium ylides of type 4 undergo 8n-electrocyclisation affording the heterobicyclic allenes 5 which, in the presence of H 2 0 and H202, are subsequently transformed into the substituted pyrido[l,2-a]azepinones 6, a novel