Palladium-Catalyzed Electrophilic Functionalization of Pyridine Derivatives through Phosphonium Salts |
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| Authors: | Yuan-Yuan Che Yanni Yue Ling-Zhi Lin Bingbing Pei Xuezu Deng Prof. Dr. Chao Feng |
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| Affiliation: | 1. Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816 P. R. China These authors contributed equally to this work.;2. Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816 P. R. China |
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| Abstract: | Herein, we report a highly efficient and practical method for pyridine-derived heterobiaryl synthesis through palladium-catalyzed electrophilic functionalization of easily available pyridine-derived quaternary phosphonium salts. The nice generality of this reaction was goes beyond arylation, enabling facile incorporation of diverse carbon-based fragments, including alkenyl, alkynyl, and also allyl fragments, onto the pyridine core. Notably, the silver salt additive is revealed to be of vital importance for the success of this transformation and its pivotal role as transmetallation mediator, which guarantees a smooth transfer of pyridyl group to palladium intermediate, is also described. |
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| Keywords: | cross-coupling palladium phosphonium salts pyridines silver |
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