The use of aliphatic aldehydes for the synthesis of 4-alkyl-6-amino-3, 5-dicyanopyridine-2 (1H)-thiones

NG Frolova, VK Zav'yalova, VP Litvinov

Index: Frolova; Zav'yalova; Litvinov Russian Chemical Bulletin, 1996 , vol. 45, # 4 p. 893 - 897

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Abstract

Abstract The condensation of aliphatic aldehydes with malononitrile and cyanothioacetamide gives 4-alkyl-2, 6-diamino-3, 5-dicyano-4 H-thiopyrans which recyclize into 4-alkyl-6-amino3, 5-dicyanopyridine-2 (IH)-thiones. The latter are easily S-alkylated with