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Liquid crystal monomer fluorine dioxane contained compound and synthesis method thereof

A technology containing fluorooxane and liquid crystal monomer, applied in organic chemistry and other directions, can solve problems such as low rotational viscosity, and achieve the effect of increasing molecular width and simple and easy synthesis route.

Active Publication Date: 2012-12-19
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 fluorine dioxane contained compound and synthesis method thereof
  • Liquid crystal monomer fluorine dioxane contained compound and synthesis method thereof
  • Liquid crystal monomer fluorine dioxane contained compound and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, a liquid crystal monomer containing fluorooxane compound, the structure of the compound is as follows:

[0017] , where R is one of fluorine, chlorine, H, C1-C5 straight-chain alkyl, C1-C5 straight-chain alkoxy, R' is fluorine, chlorine, H, C1-C5 straight-chain alkyl, One of C1-C5 linear alkoxy groups and cyano groups, R and R' are the same or different. This type of compound can be used alone or in combination for liquid crystal displays in various display forms. The following synthesis route is adopted:

[0018]

[0019] I II III

[0020] 2-(2'-fluoro-4'-p-alkylphenyl) phenylpropanediol with the structure shown in I and p-alkylbenzaldehyde with the structure shown in II are used as raw materials, wherein R in compounds I and II , R' are the same as R and R' in the fluorooxane compound III, using p-toluenesulfonic acid as a catalyst, using an organic solvent as a reaction medium, and reacting for 2-12 hours at a temperature ...

Embodiment 2

[0023] Example 2, a liquid crystal monomer containing fluorine-containing oxane compound and its synthesis method. The liquid crystal monomer containing fluorine-containing oxane compound in this example is specifically 5-(2'-fluoro-4'-p-n-propylbenzene Base) phenyl-2-(p-ethylphenyl)-1,3-dioxane, represented by IIIb;

[0024] Add 29 g of 2-(2'-fluoro-4'-p-n-propylphenyl) phenylpropanediol and 14 g of p-ethylbenzaldehyde into a 250 mL three-necked reaction flask equipped with mechanical stirring, reflux condenser, and addition funnel. 3g of p-toluenesulfonic acid, 110mL of toluene, started stirring and heating, 108-110°C reflux reaction for 3-8h, other conditions were the same as in Example 1, and purified to obtain 29g of product IIIb, ωⅢb: 99.5%, yield: 71.4%. Product mass spectrometry results: ES-MS m / z: 404[M]+.

[0025] The present invention selects biphenyl and oxane as the molecular skeleton, introduces fluorine substituents on the side of biphenyl, designs fluorine-con...

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Abstract

The invention discloses a liquid crystal monomer fluorine dioxane contained compound and a production method thereof. The structure of the compound is: FORMULA, wherein in the formula, R is one of fluorine, chlorine, H, linear alkyl of C1-C5, and linear alkyl of C1-C5; R' is one of fluorine, chlorine, H, linear alkyl of C1-C5, linear alkyl alkoxy of C1-C5, and cyan; R is the same as R' or different from R'; and the compound can be independently or mixed for liquid crystal display in various display forms. The compound and the method provided by the invention has he characteristics of liquid crystal display, meeting the requirement of 3D (three-dimensional) display technology, reducing the rotary viscosity of liquid crystal material and improving the liquid crystal material.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a liquid crystal monomer containing fluorooxane compounds and a synthesis method thereof, which 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 above-mentioned various types of 3D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D319/06
Inventor 王作鹏武生喜董兆恒
Owner 山东盛华电子新材料有限公司
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