N. S. Masterova, S. Ryabova, L. Alekseeva
Sep 1, 2009
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0
Influential Citations
2
Citations
Journal
Russian Chemical Bulletin
Abstract
Reactions of 3-acetoxy-2-(2,2-dicyanovinyl)indole with hydrazine hydrate and methyl-and phenylhydrazines afforded new indolin-3-one derivatives, namely, 2-[(3,5-diaminopyrazol-4-yl)methylidene]indolin-3-ones. Reactions of the compounds obtained with acetic anhydride and DMF and DMAA dimethyl acetals were studied. Cyclization of 2-[(3,5-diamino-1H-pyrazol4-yl)methyridene]-1,2-dihydro-3 H-indolinone gave 3-amino-1,5-dihydropyrazolo-[4’,3’:5,6]pyrido[3,2-b]indole, a representative of a novel heterocyclic system.