Cascade reaction for 3-pyrrolines and pyrroles from nitroallylic acetates and N-mesyl 2-aminoethanones

Cascade reactions of nitroallylic acetates with methanesulfonyl 2-aminoethanones affords either the 3-pyrrolines or the pyrroles in one pot depending on reaction solvents and temperature. A possible mechanism for the entire sequence is proposed.

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