Synthesis and Properties of sym-Triazine Derivatives. 7. Synthesis of Pyridyl-Substituted 2-Amino- and 2,4-Diamino-sym-triazines

Article abstract of DOI:10.1007/BF00755698

N-Substituted 2,4-diamino-6-pyridyl-sym-triazines were synthesized by cyclocondensation of pyridinecarboxylic acid esters with biguanides. 4,6-Disubstituted 2-amino-sym-triazines containing pyridyl residues were obtained by the reaction of pyridinecarboxylic acid nitriles with quanidine or of pyridinecarboxylic acid esters with N-imidoylguanidines.Aminotriazines of this type are also formed in the condensation of N-acylguanidines with nitriles or imino esters.The general principles of the fragmentation of 2-amino-4-dialkylamino-6-pyridyl-sym-triazines under the influence of electron impact were established.