New synthetic possibilities for the preparation of liquid crystalline dicyclohexyl derivatives

Genadz Sasnouski; Vladimir Bezborodov; Roman S. Dabrowski; Jerzy Dziaduszek

doi:10.1117/12.385719

12 May 2000 New synthetic possibilities for the preparation of liquid crystalline dicyclohexyl derivatives

Genadz Sasnouski, Vladimir Bezborodov, Roman S. Dabrowski, Jerzy Dziaduszek

Proceedings Volume 4147, Liquid Crystals: Chemistry, Physics, and Applications; (2000) https://doi.org/10.1117/12.385719
Event: XIII International Conference on Liquid Crystals: Chemistry, Physics, and Applications, 1999, Krynica Zdroj, Poland

Abstract

A new synthetic approach for the preparation of two- and three ring liquid crystalline compounds possessing trans,trans-dicyclohexyl moiety is proposed and realized. Recently discovered reaction of Grignard reagents with esters leading to 1-substituted cyclopropanoles in the presence of tetraisopropoxytitanium was used as a key stage. Starting from ethyl trans-4-alkylcyclohexancarboxylates the corresponding 6-(4-alkylcyclohexyl)-3-alkyl (or aryl) cyclohex-2-en-1-ones have been prepared. Their catalytic hydrogenation in the base media gave mainly saturated trans, trans-ketones which are liquid crystalline and have been used also as a promising intermediate products for the preparation of different kinds of other LC compounds.

Citation Download Citation

Genadz Sasnouski, Vladimir Bezborodov, Roman S. Dabrowski, and Jerzy Dziaduszek "New synthetic possibilities for the preparation of liquid crystalline dicyclohexyl derivatives", Proc. SPIE 4147, Liquid Crystals: Chemistry, Physics, and Applications, (12 May 2000); https://doi.org/10.1117/12.385719

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