Arylbiguanides in Heterocyclization Reactions
Tóm tắt
The reactions of arylbiguanides with acetyacetone derivatives were used to obtain N-(pyrimidin-2-yl)-N′-arylguanidines, and the reactions with acetoacetic ester derivatives (depending on the structure of the keto esters), N-aryl-N′-(4-oxo-3,4-dihydropyrimidin-2-yl)guanidines or 2-amino-4-arylamino-6-aryl(heteryl)-sulfanylmethylene-1,3,5-triazines. The N-aryl-N′-heterylguanidines formed by the reactions with anhydrides, acyl halides, and aryl isocyanates give rise to the corresponding triaza derivatives.
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