Malononitrile → Cyanamide, (1-amino-2,2-dicyanoethenyl)-

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Reaction Conditions

Reaction Steps

To a 500 ml flask is charged 13.2 gm (0.2 mole) of malononitrile, 18.2 gm (0.2 mole) of sodium dicyanamide and 80 ml of tetramethylurea. The stirred mixture is heated at 145° C. for 2.5 hours; then cooled to about room temperature. The slurry is diluted with 300 ml 2-butanol and stirred in an ice bath for one hour. The solids are filtered, washed with 50 ml of 2-butanol. The product is dried overnight at 70° C. in a vacuum oven to yield 25.0 gm of 1-amino-1-cyanamido-2,2-dicyanoethylene, sodium salt, 80.7% pure or a 65.0% yield.

Provenance & Evidence