Galal Eldin Hamza Elgemeie, S. Sherif, Fatma Abd El Maksoud Abd El Aal
Jun 1, 1986
Citations
0
Influential Citations
14
Citations
Journal
Zeitschrift für Naturforschung B
Abstract
Reaction of arylmethylenemalononitrile 2a−c with cyanothioacetamide 1 afforded 4-aryl-2,6-diamino-4H-thiopyran-3,5-dicarbonitriles 5a−c on refluxing in ethanolic aqueous triethylamine, rearranged to yield the 4-aryl-1,2-dihydro-6-hydroxy-2-thioxo-3,5-pyridine dicarbonitriles 8a−c. The same compounds could be obtained on treatment of 2a−c with 1 in ethanolic aqueous triethylamine or on reacting 1 with 2d−f. The 13C NMR data of the products are reported and interpreted.