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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2013, 2, 5—12.
Mesogenic 4-Alkoxy and 4-(n-Hydroxyalkoxy)-4'- (2,2-DicyanoEthenyl)Azobenzenes. I. Synthesis by Noncatalytic Knoevenagel Condensation Method and Spectral Characteristics
K.M. Litov1, S. A. Kuvshinova1, V. A. Burmistrov1, V. V. Alexandriysky1, O. V. Potemkina2, O. I. Koifman1
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
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.