Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Liquid crystal compound containing pentafluoropropene and pyranoid ring and liquid crystal composition of liquid crystal compound

A technology of pentafluoropropene and compounds, applied in liquid crystal materials, organic chemistry, chemical instruments and methods, etc., can solve the problems of small dielectric anisotropy, slow response speed, large rotational viscosity, etc., and achieve dielectric anisotropy Large, fast response, small rotation sticky effect

Active Publication Date: 2014-05-07
BEIJING BAYI SPACE LCD MATERIALS TECH
View PDF8 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patents such as WO2006 / 061966, WO2006 / 132015, JP2005-15775 and JP2007-277127 have involved derivatives containing pentafluoropropylene structure as liquid crystal compounds, but they all have small dielectric anisotropy, slow response speed, high rotational viscosity, etc. shortcoming

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Liquid crystal compound containing pentafluoropropene and pyranoid ring and liquid crystal composition of liquid crystal compound
  • Liquid crystal compound containing pentafluoropropene and pyranoid ring and liquid crystal composition of liquid crystal compound
  • Liquid crystal compound containing pentafluoropropene and pyranoid ring and liquid crystal composition of liquid crystal compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] BYLC-01

[0065] The synthetic route for preparing compound BYLC-01 is as follows:

[0066]

[0067] Synthesis of Compound 1-2

[0068] Add 66.8g of magnesium chips (4.046mol) and 100ml of tetrahydrofuran into a 2L three-necked flask, raise the temperature to reflux, add dropwise a small amount of a solution consisting of 488g of 3,5-difluorobromobenzene (4.046mol) and 1000ml of tetrahydrofuran, and initiate the reaction. Add the remaining tetrahydrofuran solution of 3,5-difluorobromobenzene dropwise, and react at 50°C for 0.5 hour to prepare Grignard reagent 1-1.

[0069] Add 287g (2.023mol) of propylpyrone and 750ml of tetrahydrofuran into a 5L three-necked flask, cool down to -30°C with liquid nitrogen, add the prepared Grignard reagent 1-1 (4.046mol) dropwise at -30°C, and finish the dropping , control the temperature at -30°C for 1 hour, then naturally raise the temperature to -10°C, add 240g hydrochloric acid + 700ml water dropwise at a temperature bel...

Embodiment 2

[0087] BYLC-02

[0088]The synthetic route for preparing compound BYLC-02 is as follows:

[0089]

[0090] Synthesis of compound 2-2

[0091] Add 66.8g of magnesium chips (4.335mol) and 100ml of tetrahydrofuran into a 2L three-necked flask, raise the temperature to reflux, add a small amount of solution consisting of 488g of 3,5-difluorobromobenzene (2.89mol) and 1000ml of tetrahydrofuran dropwise, and initiate the reaction. Add the remaining tetrahydrofuran solution of 3,5-difluorobromobenzene dropwise, and react at 60°C for 5 hours to prepare Grignard reagent 2-1.

[0092] Add 287g (2.023mol) of propylpyrone and 750ml of tetrahydrofuran into a 5L three-necked flask, cool down to -35°C with liquid nitrogen, add the prepared Grignard reagent 2-1 (2.89mol) dropwise at -35°C, and drop it , control the temperature at -35°C for 5 hours, then naturally raise the temperature to -10°C, add 240g hydrochloric acid + 700ml water dropwise at a temperature below 0°C, acidify t...

Embodiment 3

[0110] BYLC-03

[0111] The synthetic route for preparing compound BYLC-03 is as follows:

[0112]

[0113] Synthesis of compound 3-2

[0114] Add 66.8g of magnesium chips (4.046mol) and 100ml of tetrahydrofuran into a 2L three-necked flask, raise the temperature to reflux, add dropwise a small amount of a solution consisting of 488g of 3,5-difluorobromobenzene (2.023mol) and 1000ml of tetrahydrofuran, and initiate the reaction. Add the remaining tetrahydrofuran solution of 3,5-difluorobromobenzene dropwise, and react at 65°C for 10 hours to prepare Grignard reagent 3-1.

[0115] Add 287g (2.023mol) of propylpyrone and 750ml of tetrahydrofuran into a 5L three-necked flask, cool down to -40°C with liquid nitrogen, add the prepared Grignard reagent 3-1 (2.023mol) dropwise at -40°C, and drop it , control the temperature at -40°C for 10 hours, then naturally raise the temperature to -10°C, add 240g hydrochloric acid + 700ml water dropwise at a temperature below 0°C, ac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a liquid crystal compound containing pentafluoropropene and a pyranoid ring. The liquid crystal compound has the following structure formula described in the specification. The liquid crystal compound can be applied to modes of TN (Transition Network), IPS (Intrusion Prevention System), FFS (Formatted File System), and ADS-TFT (Acad Develop system-Thin Film Transistor). A liquid composition added with the liquid crystal compound has the advantages of shorter response time, moderate delta n numerical value, higher charge retention rate, and lower threshold voltage, and wide application prospect.

Description

technical field [0001] The present invention relates to the field of liquid crystal materials, in particular to a liquid crystal compound and a liquid crystal composition comprising the liquid crystal compound, more specifically, the present invention relates to a novel liquid crystal compound containing pentafluoropropylene and a pyran ring structure and comprising A liquid crystal composition of the liquid crystal compound. Background technique [0002] In recent years, the application fields of liquid crystal compounds have become wider and wider, and have been widely used in various types of display devices, electro-optical devices, sensors, and the like. Among them, nematic liquid crystals have the widest application in display devices. Nematic liquid crystals have been widely used in passive TN or STN matrix displays and systems with TFT active matrices. [0003] Liquid crystal materials require good chemical and thermal stability, good stability to electric field an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07D309/06C07D309/08C07D309/10C09K19/34
CPCC07D309/06C07D309/08C07D309/10C09K19/3402
Inventor 姜天孟班全志杭德余田会强高立龙梁现丽陈海光储士红
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com