Ester 3, die auch durch Veresterung von 1 erhalten werden. Mit Benzaldehyd entstehen aus 2 die 5‐Benzylidenderivate 4, mit Natriumnitrit/Salzsäure die 5‐Hydroxyiminoverbindungen 5. Die Aminolyse von 2 und 4 wird untersucht.
of dry acetonitrile at a steel grid cathode were used to promote the addition of ethyl bromoacetate to thiourea derivatives. The reaction yields the corresponding 2-imino-1,3-thiazolidin-4-one. The reaction pathway was discussed based on the kinetic and thermodynamic data obtained by computational methods. In addition, the biological activity of these new compounds was also investigated. GRAPHICAL ABSTRACT
A novel and convenient strategy is described for the regioselective conversion of N,N′-disubstituted thioureas and 1,2-dielectrophiles into the highly biologically valuable 2-imino-thiazoline and 2-imino thiazolidine-4-one derivatives. The synthesis proceeds through a process with good yield promoted by an electrogenerated base (EGB) obtained with high current efficiency.