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The Synthesis and Liquid-Crystal Transition Temperatures of Some Fluoro-Substituted Benzonitriles

✍ Scribed by Stephen M. Kelly; Hanspeter Schad

Publisher
John Wiley and Sons
Year
1985
Tongue
German
Weight
577 KB
Volume
68
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Various laterally fluoro‐substituted benzonitriles have been prepared containing a trans‐4‐(n‐alkyl)cyclohexane ring linked to the 4‐position of the benzonitriles either through a methyleneoxy (CH~2~O–) or an ethylene (CH~2~CH~2~‐) bridge. The bridging group links the benzonitrile and cyclohexane rings either directly or through an additional 1,4‐bonded cyclohexane or benzene ring. The synthesis and liquid‐crystal transition temperatures of these new compounds are described. In several cases the nematic‐isotropic transition temperatures of F‐substituted benzonitriles are found to be higher than those of the non‐laterally substituted analogues.

📜 SIMILAR VOLUMES

The synthesis and transition temperature
The synthesis and transition temperatures of benzoate ester derivatives of 2-fluoro-4-hydroxy-and 3-fluoro-4-hydroxybenzonitriles
✍ Stephen M. Kelly 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 German ⚖ 429 KB

## Abstract The synthesis and the liquid‐crystal temperatures of sixty 4‐cyano‐2‐fluorophenyl and 4‐cyano‐3‐fluorophylen 4‐substituted benzoates are described. The nematic‐isotropic liquid transition temperatures of the most of these novel esters are only marginally lower than those of the correspo

The synthesis and transition temperature
The synthesis and transition temperatures of ester derivatives of 2-fluoro-4-hydroxy- and 3-fluoro-4-hydroxybenzonitriles also incorporating aliphatic ring systems
✍ Stephen M. Kelly; Hanspeter Schad 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 German ⚖ 460 KB

## Abstract The synthesis and liquid‐crystal transition temperatures of forty ester derivatives of 2‐fluoro‐4‐hydroxybenzonitrile and 3‐fluoro‐4‐hydroxybenzonitrile are reported. The esters contain the __trans__‐1,4‐disubstituted cyclohexane or the 1,4‐disubstituted bicyclo[2.2.2]octane rings (some