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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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Rus Eng


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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2011, 2, 36—41.

Synthesis and Liquid Crystalline Properties of 4-n-Alkoxycynnamic Acids

N. V. Bumbina, O. B. Akopova, N. V. Usol'tseva

Author affiliations
Ivanovo State University, Nanomaterials Research Institute
153025 Ivanovo, Ermak Str., 39. 

4-Alkoxybenzaldehydes were obtained by alkylation of 4-oxybenzaldehyde with bromoalkanes. They were condensed with malonic acid to form four 4-n-alkoxycynnamic acids. In this case the fourteenth homologue was synthesized for the first time. Liquid crystalline properties of these acids have been studied using optical polarizing microscopy. It was established, that the obtained compounds show enantiotropic mesomorphism of the smectic type (SmC).

Keywords: synthesis, 4-alkoxybenzaldehydes, 4-n-alkoxycynnamic acids, liquid crystalline properties

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