Compound, liquid crystal medium containing compound and application thereof

A liquid crystal medium and compound technology, applied in the field of liquid crystal compounds, can solve the problems of easy precipitation and poor mutual solubility of liquid crystal compounds

Active Publication Date: 2018-07-10
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of rigid thiofluorene rings, such alkyl-substituted liquid crystal compounds have poor miscibility and are easy to precipitate at low temperatures.

Method used

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  • Compound, liquid crystal medium containing compound and application thereof
  • Compound, liquid crystal medium containing compound and application thereof
  • Compound, liquid crystal medium containing compound and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Structural formula is the compound of formula I1-1:

[0083]

[0084] Its preparation route is as follows:

[0085] step 1:

[0086]

[0087] Add 36.3g (0.14mol) 2-fluoro-6-bromo-3-cyclopentylphenol, 22.6g (0.14mol) 2,3-difluorophenylboronic acid, 43g (0.31mol) potassium carbonate, 300ml into a 1L three-necked flask Stir toluene and 100ml of pure water until completely dissolved, add 0.05g of Pd-132 under the protection of nitrogen, heat and reflux for 6h; stop the reaction, add 400ml of pure water to stir and separate the liquid, extract the water layer with 200ml×2 toluene, combine the organic layer, and use Wash with 400ml×2 saturated saline, spin dry the solvent under reduced pressure, add 80g of petroleum ether to the obtained liquid, stir well, and recrystallize at -20°C to obtain 33g of white solid (1-a), GC: 98.5%, yield 80.6%.

[0088] Step 2:

[0089]

[0090] Add 33g (0.11mol) (1-a), 21.5g (0.17mol) dimethylaminothioformyl chloride, 22.2g (0.22mol...

Embodiment 2

[0098] Structural formula is the compound of formula I6-2:

[0099]

[0100] Its preparation route is as follows:

[0101] step 1:

[0102] Using 2-fluoro-6-bromo-3-cyclopentylphenol and 2,3-difluoro-4-trifluoromethoxyphenylboronic acid as raw materials, refer to step 1 in Example 1 to synthesize the following formula 2-a compound of:

[0103]

[0104] Step 2:

[0105] Using compound 2-a as a raw material, the compound of formula 2-b is synthesized by referring to the synthesis method of step 2 in Example 1:

[0106]

[0107] Step 3:

[0108] Using compound 2-b as a raw material, refer to step 3 in Example 1 to synthesize a compound of formula 2-c:

[0109]

[0110] Step 4:

[0111] Using compound 2-c as a raw material, the target compound structural formula is synthesized as a compound of formula I6-2 with reference to step 4 in Example 1:

[0112]

Embodiment 3

[0114] Structural formula is the compound of formula I12-1:

[0115]

[0116] Its preparation route is as follows:

[0117] step 1:

[0118]Using 2-fluoro-6-bromo-3-cyclopropylmethoxyphenol and 2,3-difluoro-4-ethoxyphenylboronic acid as raw materials, refer to step 1 in Example 1 to synthesize the following formula 3-a compound of:

[0119]

[0120] Step 2:

[0121] Using compound 3-a as a raw material, the compound of formula 3-b is synthesized by referring to the synthesis method of step 2 in Example 1:

[0122]

[0123] Step 3:

[0124] Using compound 3-b as a raw material, refer to step 3 in Example 1 to synthesize compound 3-c:

[0125]

[0126] Step 4:

[0127] Using compound 3-c as a raw material, refer to step 4 in Example 1 to synthesize a target compound whose structural formula is a compound of formula I12-1:

[0128]

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PUM

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Abstract

The invention discloses a compound. The structure of the compound is shown in a formula I which is shown in the description. The compound can be used as a liquid crystal compound and overcomes the problem that traditional dibenzothiophen liquid crystals are low in solubility, and therefore the compound can be better applied in the field of liquid crystal materials. The invention further disclosesa liquid crystal medium containing the compound and application thereof.

Description

technical field [0001] The invention relates to the field of liquid crystal compounds. More particularly, it relates to a compound, a liquid-crystalline medium comprising the compound and uses thereof. Background technique [0002] Since the Austrian scientist Leinitzer first synthesized liquid crystals in 1888, the real development of the liquid crystal industry has been in the past 30 years. Due to the obvious advantages of liquid crystal display materials, such as low driving voltage, small power consumption, and reliability High, large display information, color display, no flicker, can realize flat panel display, etc., liquid crystal monomers and liquid crystal displays have experienced tremendous development, liquid crystal monomers have now synthesized more than 10,000 kinds of liquid crystal materials, of which commonly used There are thousands of liquid crystal display materials, which are classified according to the characteristics of the central bridge and ring o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D333/76C07D409/04C07D409/12C09K19/34C09K19/44C09K19/46
CPCC07D333/76C07D409/04C07D409/12C09K19/0403C09K19/3491C09K19/44C09K19/46C09K2019/0425C09K2019/0414C07D409/06C09K19/068C09K2019/3004C09K19/3066C09K19/322C09K2019/123C09K2019/122C09K2019/3016C09K2019/301C09K2019/3071C09K2019/3063C09K19/3059C09K2019/3078C09K19/04C09K2019/181C09K2019/183C09K19/3003C09K19/3068C09K2019/3077
Inventor 李明高红茹员国良张兴孟劲松张莉赵磊董艳丽
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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