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  1. No Access

    Article

    Photochromic fulgides of the indole series

    V. I. Minkin, E. A. Medyantseva, O. T. Lyashik… in Chemistry of Heterocyclic Compounds (1986)

  2. No Access

    Article

    Structure and antimicrobial activity of 2-hydroxy-cinnamaldehyde derivatives

    I. M. Andreeva, O. M. Babeshko, E. M. Bondarenko… in Pharmaceutical Chemistry Journal (1985)

  3. No Access

    Article

    Ring-chain tautomerism and thermo- and photochromism of 3-(1-hydroxy-4-methyl-2-naphthyl)propenal imines

    A series of previously undescribed 3-(1-hydroxy-4-methyl-2-naphthyl)propenal imines was synthesized. In the crystalline state all of the imines, except the N-(p-nitrophenyl)imine, have an open o-quinoid struct...

    I. M. Andreeva, O. M. Babeshko, E. M. Bondarenko… in Chemistry of Heterocyclic Compounds (1983)

  4. No Access

    Article

    Structure and ring-chain tautomerism of 3-(1-hydroxy-4-bromo-2-naphthyl)propenal

    The previously undescribed 3-(1-hydroxy-4-bromo-2-naphthyl)propenal was synthesized. This aldehyde exists primarily in the form of the cyclic 2H-chromene tautomer in the crystalline state, in solutions in nonp...

    I. M. Andreeva, E. M. Bondarenko, E. A. Medyantseva… in Chemistry of Heterocyclic Compounds (1983)

  5. No Access

    Article

    Structure and ring-chain tautomerism of 2-hydroxy-5-methyl-3,4-benzocinnamaldehyde

    The previously undescribed 2-hydroxy-5-methyl-3,4-benzocinnamaldehyde was synthesized. A cyclic 2-hydroxy-2H-chromene structure in the crystalline state and in nonpolar solvents was established for it by IR, U...

    I. M. Andreeva, E. M. Bondarenko, E. A. Medyantseva… in Chemistry of Heterocyclic Compounds (1982)

  6. No Access

    Article

    Reactions of heterocyclic cations with nitrogen-containing nucleophiles. 10. Synthesis of 3,5,7-triaryl-1,2-oxazepinium perchlorates by the reaction of 2,4,6-triarylpyrylium salts with nitrones and substituted hydroxylamines

    2-Substituted 3,5,7-triaryl-1,2-oxazepinium perchlorates were obtained by the reaction of 2,4,6-triarylpyrylium salts in dimethylformamide with nitrones and N-arylhydroxylamines. The products are the first rep...

    É. A. Zvezdina, O. M. Golyanskaya, I. M. Andreeva… in Chemistry of Heterocyclic Compounds (1982)

  7. No Access

    Article

    Photo- and thermochromic 2-amino-2H-chromenes

    A number of N-aryl- and N-alkylimines of 2-hydroxy-5,6-benzocinnamaldehyde were synthesized. The cyclic 2-amino-2H-chromene structure in nonpolar solvents was established for them by IR, UV, and PMR spectrosco...

    I. M. Andreeva, E. A. Bondarenko, N. V. Volubushko… in Chemistry of Heterocyclic Compounds (1980)