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A new approach to 7-amino-4-oxo-4,5-dihydro-3H-pyrano[2,3-d]pyrimidine-6-carbonitriles
1 , 1 , * 1, 2, 3 , 3 , 3
1  Kuban State University
2  ChemEx Lab, Vladimir Dal’ Lugansk National University
3  North Caucasus Federal University


S-alkyl derivatives of thiobarbituric acid easily react with arylmethylene malononitriles in the presence of base to give new 7-amino-4-oxo-4,5-dihydro-3H-pyrano[2,3-d]pyrimidine-6-carbonitriles. The structure of products and the mechanism of formation are discussed.

Keywords: Thiobarbituric acid, malononitrile, 2-amino-4H-pyran-3-carbonitriles, Michael addition, heterocycliaztion