Lewis acid catalyzed direct cyanation of indoles and pyrroles with N-cyano-N-phenyl-p-toluenesulfonamide (NCTS) |
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| Authors: | Yang Yang Zhang Yan Wang Jianbo |
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| Institution: | Beijing National Laboratory of Molecular Sciences (BNLMS), College of Chemistry, Peking University, Beijing 100871, China. |
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| Abstract: | BF(3)·OEt(2)-catalyzed direct cyanation of indoles and pyrroles using a less toxic, bench-stable, and easily handled electrophilic cyanating agent N-cyano-N-phenyl-para-toluenesulfonamide (NCTS) affords 3-cyanoindoles and 2-cyanopyrroles in good yields with excellent regioselectivity. The substrate scope is broad with respect to indoles and pyrroles. |
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