A. Harutyunyan, S. G. Israyelyan, H. Panosyan
Dec 1, 2019
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Journal
Russian Journal of Organic Chemistry
Abstract
One-pot condensation of 2-substituted 6-aminopyrimidin-4(3H)-ones with aromatic aldehydes and 5,5-dimethylcyclohexane-1,3-dione (dimedone) in acetic acid without a catalyst afforded new substituted 5-aryl-5,8,9,10-tetrahydropyrimido[4,5-b]quinoline-4,6(3H,7H)-diones in good yields. The condensation of 2-memyl-6-aminopyrirnidin-4(3H)-one with aromatic aldehydes at a molar ratio of 2:1 under similar conditions led to the exclusive formation of uncyclized 5,5′-(arylmemylene)bis[6-amino-2-methylpyrimidin-4(3H)-ones].