Liquid crystal compound and liquid crystal composition containing same, and liquid crystal display device
A liquid crystal compound and liquid crystal composition technology, applied in liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems of unfavorable construction reaction speed, small use temperature range, high viscosity, etc., and achieve a wide nematic phase temperature range, Effect of Short Response Time, Low Threshold Voltage
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0204] Example 1
[0205] The synthetic route of Compound I-1-1 is as follows:
[0206]
[0207] Step 1. Preparation of compounds of formula B-3
[0208] 160 g of the compound of formula B-1 ((4-ethoxy-2,3-difluorophenyl) boric acid), 160.5 g of formula B-2 (2-bromo-6-fluorophenol) was added to a 3l reaction bottle. ) And 72 g sodium carbonate, and mixed with 1.2L of mixed solvents (toluene, ethanol, and water) of toluene, ethanol, and water were sufficiently dissolved. 0.5 g of dichloro-di-tert-butyl-(4-dimethylaminophenyl) phosphine (II) was added, refluxed for 6 h. After completion of the reaction, the reaction solution was cooled, and 500 ml of water was added, the water phase was added, and the organic phase was washed with a toluene, and the organic phase was washed with saturated brine, and the mixture was crystallized with isopropanol to obtain 182.8g. The compound of formula B-3 (4'-ethoxy-2 ', 3,3'-trifoxy-[1,1'-biphenyl) -2-alcohol) (purity: 99.35%) Rativity: 86%).
...
Example Embodiment
[0222] Example 2
[0223] The synthetic route of Compound I-3-5-1 is as follows:
[0224]
[0225] Step 1. Preparation of compounds of formula B-8
[0226] 120 g of the compound of formula B-7 ((2,3-difluoro-4'-propyl-[1,1, 1'-biphenyl] -4-yl) boric acid was added (2,1,1, 1'-biphenyl] -4-yl), 160.5 g of formula B. The compound (2-bromo-6-fluorophenylphenol) and 83 g of sodium carbonate, and a mixed solvent (toluene, ethanol, and water) of toluene, ethanol and water is 2: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1) Dissolve. 0.5 g of dichloro-di-tert-butyl-(4-dimethylaminophenyl) phosphine (II) was added, refluxed for 6 h. After the reaction, the reaction solution was cooled, and 500 ml of water was added, 2 times in the water phase was added, and the organic phase was washed 2 times, and the organic phase was washed with a saturated brine, and mixed, concentrated, mixed with toluene and ethanol. Solvent (toluene and ethanol is 1: 1) Re-crystallization t...
Example
[0246] Application ratio 1
[0247] The liquid crystal compositions of the Comparative Example 1 were formulated in accordance with the respective compounds listed in Table 6 and their weight percentage, and they were filled between the two substrates of the liquid crystal display.
[0248] Table 6. Formulation and performance parameter test results of Liquid crystal composition
[0249]
PUM

Abstract
Description
Claims
Application Information

- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap