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Liquid crystal monomer bicyclohexyl-containing epoxyethane compound and synthetic method thereof

A technology of cyclohexaneoxane and liquid crystal monomers, applied in chemical instruments and methods, liquid crystal materials, organic chemistry, etc., can solve problems such as low rotational viscosity, and achieve the goal of reducing viscosity, improving phase transition temperature, and reducing threshold voltage. Effect

Active Publication Date: 2014-12-31
山东盛华电子新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this is related to the structural characteristics of the liquid crystal material itself. At present, any single liquid crystal material cannot independently meet the display requirements, and can only meet the display needs by mixing monomers. Therefore, liquid crystal materials with low rotational viscosity and high dielectric anisotropy coefficient are developed. It is a field that monomer developers are constantly exploring, and new compounds are constantly being developed in this field

Method used

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  • Liquid crystal monomer bicyclohexyl-containing epoxyethane compound and synthetic method thereof
  • Liquid crystal monomer bicyclohexyl-containing epoxyethane compound and synthetic method thereof
  • Liquid crystal monomer bicyclohexyl-containing epoxyethane compound and synthetic method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Embodiment 1, a liquid crystal monomer containing bicyclohexane oxane compound, is characterized in that the structure of the compound is as follows:

[0017]

[0018] In the formula, R is one of fluorine, chlorine, H, C1-C5 straight-chain alkyl, C1-C5 straight-chain alkoxy, and R' is fluorine, chlorine, H, C1-C5 straight-chain alkyl, C1 -One of C5 straight-chain alkoxy groups and cyano groups. This type of compound can be used alone or in combination for liquid crystal display in various display forms. The following synthesis route is adopted:

[0019]

[0020] I II III

[0021] Using p-alkylbicyclohexylcarbaldehyde shown in structure I and 2-p-alkylphenylpropanediol shown in II as raw materials, wherein R, R' in compounds I and II are combined with bicyclohexane oxane compounds R and R' in III are the same, using p-toluenesulfonic acid as a catalyst, using an organic solvent as a reaction medium, and reacting for 2-12 hours at a temperature of 35-...

Embodiment 2

[0024] Example 2, a liquid crystal monomer containing bicyclohexane oxane compound and its synthesis method. The bicyclohexane oxane compound in this example is 5-p-ethylphenyl-2-(p-propylbicyclohexyl Alkyl)-1,3-dioxane, represented by IIIb;

[0025] Add 29 g of p-n-pentyl bicyclohexyl formaldehyde, 22 g of 2-p-ethylphenylpropanediol, 4 g of catalyst p-toluenesulfonic acid, and 110 mL of toluene into a 250 mL three-necked reaction flask equipped with a mechanical stirrer, a reflux condenser, and an addition funnel. Stir and heat, reflux at 108-110°C for 3-8 hours, other conditions are the same as in Example 1, and purify to obtain 33g of product IIIb, ωⅢb: 99.5%, yield: 70.5%, product mass spectrometry result: ES-MS m / z: 426[ M]+.

[0026] The present invention selects bicyclohexane and oxane as the molecular skeleton, designs liquid crystal compound III containing bicyclohexane oxane, and is shown in I with p-alkylbicyclohexyl formaldehyde structure, and 2-p-alkylphenylpropa...

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Abstract

The invention discloses a liquid crystal monomer bicyclohexyl-containing epoxyethane compound and a synthetic method thereof. The liquid crystal monomer bicyclohexyl-containing epoxyethane compound has such structure, wherein R is one of fluorine, chlorine, H, C1-C5 linear chain alkyl and C1-C5 linear chain alkoxy; R' is one of fluorine, chlorine, H, C1-C5 linear chain alkyl, C1-C5 linear chain alkoxy, and cyan; and such compound can be independently or mixed to be used for liquid crystal display in various forms. The liquid crystal monomer bicyclohexyl-containing epoxyethane compound and the synthetic method provided by the invention have the characteristics that the liquid crystal display is achieved, the demands on 3D (three-dimensional) display technology are met, the rotating viscosity of a liquid crystal material is reduced, and the dielectric anisotropy coefficient of the liquid crystal material is improved.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a liquid crystal monomer containing a bicyclohexane oxane compound and a synthesis method thereof. The bicyclohexane oxane compound can be used for liquid crystal displays. Background technique [0002] Liquid crystal display technology has been widely used in daily life. The synthesis of its core material—liquid crystal monomer has always been the focus of chemists. At present, with the update of liquid crystal display technology, 3D display technology has attracted more and more attention. 3D display The mainstream technology types include glasses-type 3D technology and glasses-free 3D technology. Glasses-type 3D technology includes chromatic aberration 3D technology, polarization 3D technology and active shutter 3D technology; glasses-free 3D technology includes parallax barrier 3D technology, Lenticular lens 3D technology, pointing light source 3D technology, etc. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D319/06C09K19/34
Inventor 王作鹏谢英董兆恒
Owner 山东盛华电子新材料有限公司
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