Continuous flow photolysis of aryl azides: Preparation of 3H-azepinones

Photolysis of aryl azides to give nitrenes, and their subsequent rearrangement in the presence of water to give 3H-azepinones, is performed in continuous flow in a photoreactor constructed of fluorinated ethylene polymer (FEP) tubing. Fine tuning of the reaction conditions using the flow reactor allowed minimization of secondary photochemical reactions.

• Farhan R. Bou-Hamdan
• François Lévesque
• Alexander G. O'Brien
• Peter H. Seeberger

• Max Planck Institute of Colloids and Interfaces, Berlin, Germany

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