Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 356, Issue 13, Pages 2807-2812Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201400527
Keywords
azides; heterocyclic compounds; indoles; photoredox catalysis; visible light
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Funding
- National Science Foundation of China [21272087, 21232003, 21202053]
- National Basic Research Program of China [2011CB808603]
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A visible light-induced photocatalytic intramolecular cyclization of styryl azides has been developed in the presence of the ruthenium complex Ru(bpy)(3)Cl-2 (0.5 mol%) as photocatalyst at room temperature. The present photocatalytic strategy features operational simplicity as well as high functional group tolerance, and provides a facile access to various 2-substituted N-free indoles in good to excellent yields. Importantly, the present process can employ sunlight as the light source to afford the corresponding products without loss of reaction efficiency.
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