Journal
CHEMICAL SCIENCE
Volume 10, Issue 9, Pages 2767-2772Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sc05237a
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Funding
- National Natural Science Foundation of China [21833002, 21673110, 21572099]
- China Postdoctoral Science Foundation [2017M620198]
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A metal-free and photo-free method for the perfluoroalkylative pyridylation of alkenes has been developed via a combination of computational and experimental studies. Density functional theory calculations and control experiments indicate that the homolysis of R-f X (X 1/4 Br, I) bonds by the 4-cyanopyridine-boryl radicals in situ generated from 4-cyanopyridine and B(2)pin(2) is the key step. Sequential addition of Rf radicals to alkenes and the selective cross-coupling of the resulting alkyl radicals and 4-cyanopyridineboryl radicals gives alkene difunctionalization products with a quaternary carbon center. This method exhibits a broad substrate scope and good functional group compatibility.
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