4-SUBSTITUTED PHENYL ISOTHIOCYANATE

摘要

NEW MATERIAL:The 4-(trans-4'-alkylcyclohexyl)phenyl isothiocyanate of formula (R is 1-10C alkyl). USE:Useful as a liquid crystal material. It is a nematic liquid crystal substance having low viscosity and positive dielectric anisotropy, and is suitable as a component of a TN-type liquid crystal display element. It has a melting point not too high and a clear point not too low. PREPARATION:The compound of formula can be produced by using 4-(trans-4'- alkylcyclohexyl)aniline as an intermediate, and converting the amino group to -N=C=S group by conventional method.