Effect of substituents on cation-receptor properties of crown-containing 1-hydroxyanthraquinone imines
| Autor: | L. S. Klimenko, D. A. Neznaeva, A. A. Kudrevatykh, Timofey P. Martyanov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
010405 organic chemistry Chemistry Complex formation General Chemistry 010402 general chemistry 01 natural sciences Acceptor Tautomer Anthraquinone Medicinal chemistry 0104 chemical sciences chemistry.chemical_compound 1-hydroxyanthraquinone Anthraquinones Receptor Crown ether |
| Zdroj: | Russian Chemical Bulletin. 68:623-627 |
| ISSN: | 1573-9171 1066-5285 |
| Popis: | Complex formation properties of new crown-containing 1-hydroxyanthraquinone imines with donor and acceptor substituents in the anthraquinone nucleus were studied. The compounds were prepared by photochemical reactions of 4-aminobenzo-15-crown-5-ether with photoactive derivatives of 1-phenoxyanthraquinone. It has been established that the introduction of acceptor substituents causes a shift of the prototropic tautomeric imine-enamine equilibrium towards the formation of the NH-form. As a result, significant cation-induced spectral changes are observed during complex formation. |
| Databáze: | OpenAIRE |
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