The di-imines (1), obtained by the reaction of Schiff bases with saturated nitriles, react with ethyl chloroformate and carbon disulphide giving rise to an efficient method for synthesising pyrimidine-2(1H)-ones and -thiones, respectively.
J. Barluenga, M. Tomás, V. Rubio and V. Gotor, J. Chem. Soc., Chem. Commun., 1979, 675 DOI: 10.1039/C39790000675
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