New strategy for the synthesis of LC compounds possessing 4,4'-dicyclohexyl or 4,4'-cyclohexenylcyclohexyl moiety

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

doi:10.1117/12.472125

27 June 2002 New strategy for the synthesis of LC compounds possessing 4,4'-dicyclohexyl or 4,4'-cyclohexenylcyclohexyl moiety

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

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Proceedings Volume 4759, XIV Conference on Liquid Crystals: Chemistry, Physics, and Applications; (2002) https://doi.org/10.1117/12.472125
Event: XIV Conference on Liquid Crystals, Chemistry, Physics, and Applications, 2001, Zakopane, Poland

Abstract

A new synthetic approach for the preparation of two- and three ring liquid crystalline compounds possessing trans,trans-4,4'-dicyclohexyl or trans-4,4'- cyclohexylcyclohexenyl moiety is proposed and developed. The key stage is the Michael type condensation of 2-substituted acetoacetic esters or 4 -substituted benzyl methyl ketones with any precursor of the corresponding vinyl trans-4-alkyl (or aryl) cyclohexyl ketone which gives the corresponding cyclohexenones. Their catalytic hydrogenation in the base media gives saturated trans,trans-cyclohexylcyclohexanones which are liquid crystalline and can be used also as promising intermediates for the preparation of different kinds of other LC compounds.

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Genadz Sasnouski, Vladimir Bezborodov, Roman S. Dabrowski, and Jerzy Dziaduszek "New strategy for the synthesis of LC compounds possessing 4,4'-dicyclohexyl or 4,4'-cyclohexenylcyclohexyl moiety", Proc. SPIE 4759, XIV Conference on Liquid Crystals: Chemistry, Physics, and Applications, (27 June 2002); https://doi.org/10.1117/12.472125

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