2-(Dicyanomethylene)-1,3-dithiolo-(4,5-b)pyrazine-5,6-dicarbonitrile

Abstract

2-(Dicyanomethylene)-1,3-dithiolo(4,5-b)pyrazine-5,6-dicarbonitrile is prepared by reacting di(sodiomercapto)methylenemalononitrile with 2,3-dichloro-5,6-dicyanopyrazine in dimethylformamide as reaction medium at a temperature between about 25.degree. and about 60.degree. C until reaction is substantially complete. The reaction product has antimicrobial utility.

Dependencies are inferred from the claim text.