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Total Syntheses of Chelidonine and Norchelidonine via an Enamide–Benzyne–[2 + 2] Cycloaddition Cascade

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posted on 2012-06-01, 00:00 authored by Zhi-Xiong Ma, John B. Feltenberger, Richard P. Hsung
Total syntheses of chelidonine and norchelidonine featuring an enamide–benzyne–[2 + 2] cycloaddition initiated cascade is described. The cascade includes a pericyclic ring-opening and intramolecular Diels–Alder reaction.

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