73255-66-0Relevant academic research and scientific papers
Liquid Crystalline trans-4-(ω-Cyanalkyl)cyclohexylester and 4-(ω-Cyanalkyl)phenylesters
Deutscher, H.-J.,Krieg, R.,Frach, R.,Kresse, H.,Zaschke, H.
, p. 963 - 974 (2007/10/02)
The synthesis of the title esters 1 and 2a-e (n = 0-3) and their mesomorphic properties are described.When the alkyl-spacer n between the polar CN-group and the cyclohexane ring of cyanalkyl-cyclohexylesters 1 is increased the difference of the clearing points between the phenylesters 2 and the cyclohexylesters 1 decreases to nearly zero.The reason of higher clearing temperatures of 2 is a dynamic conformational effect of ring inversion of cyclohexane in the ester 1 with two polar substituents at the ring.
