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US 5,344,955 AGranted
Preparation of 1-amino-cyan-amido-2,2-dicyanoethylene, sodium salt
AssigneeCiba-Geigy Corporation
InventorWard H. Oliver
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Abstract
1-Amino-1-cyanamido-2,2-dicyanoethylene, sodium salt is prepared by a process which comprises reacting malononitrile with sodium dicyanamide at an elevated temperature and in the presence of an aprotic, dipolar solvent. The subject compound is useful as an intermediate to prepare substituted pyrimidines.
Claims15
A process for the preparation of 1-amino-1-cyanamido-2,2-dicyanoethylene, sodium salt which comprises reacting malononitrile with sodium dicyanamide at an elevated temperature and in the presence of an aprotic, dipolar solvent.
Dependencies are inferred from the claim text.