Liquid crystal compound containing acetal ring and preparation method thereof

Abstract

The invention discloses a liquid crystal compound containing acetal. A structural formula of the compound is as shown in the specification, wherein R is C2-C5 linear alkyl, m is 0 or 1, and cyclohexyl is trans-cyclohexyl. The liquid crystal compound is obtained by enabling substituted aryl alkynol and substituted benzenepropanal acetal to generate sonogashira coupling reaction, and the synthesis method is simple, relatively low in cost, and suitable for industrial production. The liquid crystal compound disclosed by the invention has positive dielectric anisotropy and a certain nematic phase liquid crystal region, a relatively high clearing point and proper optical anisotropy, is excellent in solubility with other liquid crystal compounds, and can be applied to an IPS display mode and a TN display mode.

Description

technical field

[0001] The invention belongs to the technical field of liquid crystal compounds, and in particular relates to a novel liquid crystal compound containing an acetal ring and a preparation method thereof. Background technique

[0002] Since the development of liquid crystal display, it is still impossible to find a liquid crystal monomer to meet the many requirements of liquid crystal materials for display. It is still necessary to mix various liquid crystal compounds in appropriate proportions in order to obtain the best match of various special parameters to meet various requirements. Different display requirements. Therefore, liquid crystal materials for display have grown along with the development of liquid crystal displays, and a large number of liquid crystal compounds have appeared. From azo, azo oxide, benzylidene, biphenylene cyanide, esters, oxygen-containing heterocyclic rings, pyrimidine ring liquid crystal compounds to cyclohexyl (bi)benzenes, tol...

Images