When unsaturated N-acyliminium ions are generated in superacidic CF3SO3H, cyclization products are obtained.  A mechanism is proposed involving the formation of a vinylogous enol and subsequent electrocyclization.  The results from these studies will be presented.

Superacid-catalyzed electrocyclizations of unsaturated <i>N</i>-acyliminium ions

243rd National Meeting (2012)

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Superacid-catalyzed electrocyclizations of unsaturated N-acyliminium ions