Summary Aromatic nitriles appear to react with guanidine to form acylimidoguanidines as primary products, but this reaction fails when the aromatic nucleus is substituted with certain electron donating groups. The acylimidoguanidines may react further, depending. on electronic and steric factors, giving 2-amino-4, 6-diaryl-l, 3, 5-triazines as the usual product, but in one instance an arylguanamine was isolated.
