Studied cyclization N-aryl biguanides (ketones and keto esters) installed chemoselectivity of this process. An approach to syn tezu new heterocyclic sys-tem 2-amino-1,4-dihydro-pyrimido [1,2-a] [1,3,5] triazin-6-ones. Investigated methods of synthesis AZAG-terotsiklicheskih systems: 1,3,5-triazine, pyrimidine, dihydropyrimidine-6-ones based on N-arilbiguanidov.
cyclization synthesis, gidrotsiklicheskaya system
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