Title:
TRIPHENYLENE DIACETYLENE COMPOUND, AND LIQUID CRYSTAL COMPOSITION CONTAINING THE COMPOUND AND LIQUID CRYSTAL DISPLAY
Document Type and Number:
Japanese Patent JP3544162
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a triphenylene diacetylene compound having high birefringence, a low melting point, and a high clarifying point, capable of expanding the temperature range of a nematic liquid crystal phase and useful as a component for liquid crystal compositions needed for TN type, STN type and TFT type liquid crystal displays.
SOLUTION: A compound of the formula [G1 is CnH2n+11 or OCnH2n+1; (n) is 1-20; G2 is CmH2m+11 or OCmH2m+1; (m) is 1-20; R1-R3 are each H or a 1-3C alkyl], for example, PTP(CH3)TP-36. The compound of the formula is obtained by dissolving a diphenylacetylene compound and 1-(1-ethynyl)-4-hexylbenzene in triethylamine, separately adding triphenyl phosphine, bis(triphenylphosphine) palladium (II) chloride, and copper iodide to the solution under an atmosphere of nitrogen gas, heating and refluxing the obtained solution for a day, cooling the solution, extracting the excessive solvent, washing, concentrating and then drying the product.
Inventors:
Chiki Xu
Xu Kunifeng
Zhuang Yakumo
Zhang Minzhong
Xu Kunifeng
Zhuang Yakumo
Zhang Minzhong
Application Number:
JP2000000346A
Publication Date:
July 21, 2004
Filing Date:
January 05, 2000
Export Citation:
Assignee:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
International Classes:
C07C15/54; C07C33/20; C07C43/215; C09K19/04; C09K19/18; G02F1/13; (IPC1-7): C07C15/54; C07C43/215; C09K19/18; G02F1/13
Domestic Patent References:
| JP2083340A | ||||
| JP1305040A | ||||
| JP2000198755A |
Attorney, Agent or Firm:
Sota Asahina
Kei Saki
Kei Saki