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Zhengkai Chen, Qiangqiang Yan, Zhanxiang Liu, Yiming Xu and Prof. Dr. Yuhong Zhang Copper-Mediated Synthesis of 1,2,3-Triazoles from N-Tosylhydrazones and Anilines Angewandte Chemie International Edition 52

Version of Record online: 15 OCT 2013 | DOI: 10.1002/anie.201306416

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NNNifty targets: In a straightforward copper-mediated synthesis of 1,4-disubstituted and 1,4,5-trisubstituted 1,2,3-triazoles, readily available aniline and N-tosylhydrazone substrates underwent cyclization through C[BOND]N and N[BOND]N bond formation (see scheme; Piv=pivaloyl, Ts=p-toluenesulfonyl). This method enables the preparation of 1,2,3-triazoles with high efficiency under mild conditions without the use of azides.

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