Journal of Fluorine Chemistry 2018-03-29

Regio- and stereoselective reaction of 3-fluoropyridine, electron-deficient alkynes and bis(fluoroalkyl) phosphites: catalyst- and solvent-free synthesis of polyfluoroalkylphosphonylated 3-fluoro-1,2-dihydropyridines

Svetlana N. Arbuzova, Nina K. Gusarova, Tatyana I. Kazantseva, Svetlana I. Verkhoturova, Alexander I. Albanov, Boris A. Trofimov

Index: 10.1016/j.jfluchem.2018.03.013

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Abstract

The catalyst- and solvent-free reaction between 3-fluoropyridine, electron-deficient alkynes and bis(fluoroalkyl) phosphites occurs under mild conditions (20-22 °C, 1-8.5 h) to stereo- and regioselectively afford 2-bis(polyfluoroalkoxy)phosphoryl- (E)-N-ethenyl-3-fluoro-1,2-dihydropyridines in 53-69% yield.