Title:
HEXENEDIYNE DERIVATIVE AND LIQUID CRYSTAL COMPOSITION
Document Type and Number:
Japanese Patent JP3651023
Kind Code:
B2
Abstract:
PURPOSE: To provide a new compound which has an extremely high value of optical anisotropy, a wide range of liquid crystal temperature, a low viscosity and shows adequate stability under the conditions at which the compound is used as a liquid crystal element and excellent compatibility with other liquid crystal materials.
CONSTITUTION: A compound of formula I (R1, R2 are alkyl, an alkoxy; rings A and B are 1,4-cyclohexylene or 1,4-phenylene; X is H, F), for example, 1-(4- ethyl-phenyl)-6-(4-propylphenyl)hex-3E-ene-1,5-diyne. A compound of formula I where X is H is obtained by coupling reaction of an acetylenic derivative of formula II with a vinyl chloride derivative of formula III in the presence of a Pd complex catalyst of 0 or 2 valency such as dichlorobistriphenylphosphine palladium and copper iodide cocatalyst in diethylamine. The compound of formula III is obtained by coupling reaction of an acetylenic derivative of formula IV with 1,2-dichloroethylene.
Inventors:
Atsuko Fujita
Akiichi Matsui
Kazufumi Miyazawa
Yasuyuki Goto
Etsuo Nakagawa
Shinichi Sawada
Akiichi Matsui
Kazufumi Miyazawa
Yasuyuki Goto
Etsuo Nakagawa
Shinichi Sawada
Application Number:
JP15144594A
Publication Date:
May 25, 2005
Filing Date:
June 09, 1994
Export Citation:
Assignee:
Chisso Co., Ltd.
International Classes:
G02F1/13; C07C13/28; C07C15/50; C07C22/00; C07C22/08; C07C43/215; C07C43/225; C09K19/18; C09K19/30; C09K19/42; (IPC1-7): C07C13/28; C07C15/50; C07C22/08; C07C43/215; C07C43/225; C09K19/18; C09K19/30; C09K19/42; G02F1/13
Domestic Patent References:
| JP6312946A | ||||
| JP3294386A |
Other References:
Journal of Organic Chemistry,Vol.59,No.23,p.7142-7143
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