Synthesis method of liquid crystal compound difluoro-[(4-alkoxyl-2, 3, 5, 6-tetrafluorophenyl)ethyl)-3, 5-difluorophenyl-3, 4, 5-trifluororphenoxyl]methane

Synthesis method of liquid crystal compound difluoro-[(4-alkoxyl-2, 3, 5, 6-tetrafluorophenyl)ethyl)-3, 5-difluorophenyl-3, 4, 5-trifluororphenoxyl]methane

The invention discloses a synthesis method of liquid crystal compound difluoro-[(4-alkoxyl-2, 3, 5, 6-tetrafluorophenyl)ethyl)-3, 5-difluorophenyl-3, 4, 5-trifluororphenoxyl]methane. The synthesis method comprises the steps: abutting raw materials alkoxyltetrafluorotolane and 3, 5-difluorobromobenze...

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Hauptverfasser: BIE GUOJUN, YANG XUEJUN, DU WEISONG, GAO AIAI, XIN XINGDONG, ZHANG YANWEI, DENG DENG, XU LEI, ZHANG WANGCAI, SONG KUANGUANG
Format: Patent
Sprache:chi ; eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:The invention discloses a synthesis method of liquid crystal compound difluoro-[(4-alkoxyl-2, 3, 5, 6-tetrafluorophenyl)ethyl)-3, 5-difluorophenyl-3, 4, 5-trifluororphenoxyl]methane. The synthesis method comprises the steps: abutting raw materials alkoxyltetrafluorotolane and 3, 5-difluorobromobenzene according to a novel route design, then, hydrotreating, next, abutting a difluorohalomethane group at low temperature, and finally, etherifying the product with 3, 4, 5-trifluoro phenol to obtain the liquid crystal compound difluoro-[(4-alkoxyl-2, 3, 5, 6-tetrafluorophenyl)ethyl)-3, 5-difluorophenyl-3, 4, 5-trifluororphenoxyl]methane. According to the route, the synthesis method is easy to operate, low in requirement for equipment and suitable for large-scale production; the intermediate process is easy to control.