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Chengming Wang, Huan Sun, Yan Fang and Prof. Dr. Yong Huang Inside Back Cover: General and Efficient Synthesis of Indoles through Triazene-Directed C–H Annulation (Angew. Chem. Int. Ed. 22/2013) Angewandte Chemie International Edition 52

Version of Record online: 6 MAY 2013 | DOI: 10.1002/anie.201303274

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Directed C[BOND]H annulation reactions provide a straightforward solution to the synthesis of substituted indoles. In their Communication on page 5795 ff., Y. Huang and co-workers describe a general protocol for the synthesis of unprotected indoles. By using a cleavable triazene as the directing group, C[BOND]H annulation with a wide scope of alkynes was accomplished with excellent regioselectivity for both aryl,alkyl and alkyl,alkyl disubstituted acetylenes.

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