Chelation-Assisted Palladium-Catalyzed Cascade Bromination/Cyanation Reaction of 2-Arylpyridine and 1-Arylpyrazole C-H Bonds

[摘要]：A chelation-assisted palladium-catalyzed cascade bromination/cyanation reaction of 2-arylpyridine and 1-arylpyrazole C-H bonds has been developed. Notably, the reaction employs K-3[Fe(CN)(6)] as a safe and nontoxic cyanide source, providing aromatic nitriles in moderate to good yields in one-pot. The procedure tolerates methoxy, chloro, fluoro, cyano, trifluoromethyl, and carbomethoxy groups.

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