Demonstrates the synthesis of thiopranes in a novel reaction involving carbon disulfide and malononitrile, suggesting new pathways for chemical production.
Potassium 2-(1-cyano-2,2-disulfidovinyl)-1,1,3,3-tetracyanopropenide was synthesized for the first time by reaction of carbon disulfide with malononitrile trimer. Based on the resulting disulfide, further transformations were carried out, resulting in the production of 2-amino-4-(dicyanonethylene)-4H-thiopyran-3,5-dicarbonitrile derivatives.
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K.V. Lipin (2025) studied this question.
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