Kristallin‐flüssige trans‐4‐n‐Alkylcyclohexan‐carbonsäurephenylester

Abstract

Liquid Crystalline Phenyl‐trans‐4‐n‐alkylcyclohexanecarboxylates The syntheses of p‐substituted phenyl‐trans‐4‐n‐alkylcyclohexanecarboxylates 1 – 12 and cyclohexyl‐p‐n‐alkylbenzoates 15 – 17 and their mesomorphic properties are described. p‐n‐Alkoxyphenyl‐trans‐4‐n‐alkylcyclohexanecarboxylates 1 – 8 exhibit larger thermal stability of mesophases than analogous phenylbenzoates 13 . Trans‐4‐subst. cyclohexyl‐p‐n‐alkylbenzoates 15 – 17 and S‐phenyl‐thiocylohexanecarboxylates 19 on the other side are less stable.