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Macrocycle Ring Expansion by Double Stevens Rearrangement

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journal contribution
posted on 2006-06-08, 00:00 authored by Keisha K. Ellis-Holder, Brian P. Peppers, Andrei Yu. Kovalevsky, Steven T. Diver
New benzimidazolidinone cyclophanes were synthesized through a double Stevens rearrangement employed as a ring expansion technique. Para-substituted heterophanes underwent efficient rearrangement. Meta-substituted heterophanes were also prepared. Structure analyses of the new cyclophanes are also provided.

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