Synthesis of novel N-aryl-2,5-dihydro-2-iminofuran-3-carboxamides and their chemical transformations

Novel N-aryl-2,5-dihydro-2-iminofuran-3-car- boxamides have been synthesized by condensation of tertiary a-hydroxyketones with N-aryl-2-cyanoacetamides. The obtained products were transformed to corresponding iminium chlorides, hydrogen sulfates, 2-oxo and 2-(dicy- anomethylene) derivatives. All new compounds were characterized by NMR and IR spectral data and elemental analysis.