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• W1971544503 abstract "Dienes embedded in quinolizidine and indolizidine structures can be prepared in four steps from cyclic nitrones and bicyclopropylidene. The key intermediates α-spirocyclopropanated N -heterocyclic ketones, generated via a domino 1,3-dipolar cycloaddition/thermal rearrangement sequence, were converted by Wittig methylenation to the corresponding vinylcyclopropanes (VCPs), which underwent rearrangement to 1,3-dienes in the presence of the Wilkinson Rh(I) complex under microwave heating. The previously unexplored Rh(I)-catalyzed opening of the VCP moiety embedded in an azapolycyclic system occurs at high temperature (110–130 °C) to afford the corresponding 1,3-dienes in moderate yield (34–53%)." @default.
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• W1971544503 date "2011-03-09" @default.
• W1971544503 modified "2023-10-09" @default.
• W1971544503 title "Rh-Catalyzed rearrangement of vinylcyclopropane to 1,3-diene units attached to <i>N</i>-heterocycles" @default.
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• W1971544503 doi "https://doi.org/10.3762/bjoc.7.39" @default.
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