N-Cyanoamidines (I) rarely have been examined as synthetic intermediates, despite their close structural similarity to cyanoguanidine (I. R= KHz), a compound which has been extensively studied for over a century.] The reaction of K-cyanoformamidine with guanidine to give a good yield of 2, 4-diamino-s-triazine is apparentIy the only reported direct conversion of an S-cyanoamidine to a heterocyclic product. The present paper contains ...
