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Liquid Crystals and their Application
Russian Journal Zhidkie kristally i ikh prakticheskoe ispol'zovanie Жидкие кристаллы и их практическое использование |
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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2013, 2, 5—12. |
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Mesogenic 4-Alkoxy and 4-(n-Hydroxyalkoxy)-4'- (2,2-DicyanoEthenyl)Azobenzenes. I. Synthesis by Noncatalytic Knoevenagel Condensation Method and Spectral Characteristics
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K.M. Litov1, S. A. Kuvshinova1, V. A. Burmistrov1, V. V. Alexandriysky1, O. V. Potemkina2, O. I. Koifman1
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Author affiliations
1Ivanovo State University of Chemistry and Technology, Institute of Macroheterocycles
153000 Ivanovo, Av. F. Engel’s, 7
2Ivanovo Institute of the State Fire Service
Stroitelei pr. 33, Ivanovo, 153040 Russia.
E-mail: SEVERUS_87@mail.ru
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Abstract
Optimum conditions for the synthesis of compounds of two homologous series: 4-alkoxy- (С6, С7, С8, С9) and 4-(n-hydroxyalkoxy)-4'-(2,2-dicyanoethenyl)azobenzene (С6, С8, С9, С10) were worked out. Structural characterization of the compounds was carried out by the methods of elemental analysis, IR-, 1H and 13C nuclear magnetic resonance spectroscopy. UV-spectra of the synthesized compounds were obtained. Melting points and molar extinction coefficients were determined.
Keywords: Knoevenagel condensation, elemental analysis, IR-spectroscopy, NMR, UV-spectroscopy, maximum absorption, extinction coefficient
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