Nematic Liquid Crystals with Negative Dielectric Anisotropy: Molecular Design and Synthesis

Peer Kirsch; Volker Reiffenrath; Matthias Bremer

doi:10.1055/s-1999-2619

Synlett 1999; 1999(4): 389-396
DOI: 10.1055/s-1999-2619

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Nematic Liquid Crystals with Negative Dielectric Anisotropy: Molecular Design and Synthesis

Peer Kirsch^* , Volker Reiffenrath, Matthias Bremer

^*Merck KGaA, Liquid Crystals Division, D-64271 Darmstadt, Germany; Fax +49-61 51-72 25 93; E-mail: peer.kirsch@merck.de

Abstract

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Despite their relatively uniform structural appearance, the synthesis of liquid crystalline materials for modern display applications involves a broad range of different synthetic methods, such as heterocyclic chemistry, ortho-metallation, transition metal catalyzed carbon-carbon coupling reactions or stereoselective hydrofluorination. This account aims to give an impression of the ongoing challenge to introduce these complex techniques into industrial practice, and to keep pace with the more and more rapid advance of display technology.

liquid crystals - ortho-metallation - boronic acid coupling - nucleophilic aromatic substitution - hydrofluorination

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