Cover Picture: Complexity from Simplicity: Tricyclic Aziridines from the Rearrangement of Pyrroles by Batch and Flow Photochemistry (Angew. Chem. Int. Ed. 5/2013)

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Abstract

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Complex tricylic aziridines can be prepared from simple pyrroles by UV irradiation. In their Communication on page 1499 ff., K. I. Booker-Milburn and co-workers show that the reaction proceeds by a two-stage photochemical sequence that involves [2+2] cycloaddition and rearrangement, and that the scale of the reaction can be increased using a customized FEP flow reactor.

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