Title:
TRANS-DIHALOGENOSTILBENE DERIVATIVE COMPOUND AND USE THEREOF
Document Type and Number:
Japanese Patent JPH03294386
Kind Code:
A
Abstract:
NEW MATERIAL:A compound expressed by formula I (A1 to A4 are trans-l, 4-cyclohexylene, 1, 4-phenylene, etc.; Y1 to Y4 are -COO-, -O-, -CH2CH2-, -NO=N-, etc.; X1 and X2 are F, Cl, Br or trifluoromethyl ; m, n, p and q are 0 or 1; R1 and R2 are 1-10C alkyl, halogen, nitrile, etc.).
USE: A liquid crystal electrooptical element.
PREPARATION: A halogen compound expressed by formula II is converted into a lithium compound using n-butyl-lithium and the resultant compound is then reacted with a compound expressed by formula III at -80°C to provide a com pound, which is subsequently reacted with a lithium compound expressed by formula IV to afford the trans-dihalogenostilbene derivative compound expressed by formula I.
Inventors:
SATO KIKUMASA
INOUE SEIICHI
MACHIDA KATSUTOSHI
INOUE SEIICHI
MACHIDA KATSUTOSHI
Application Number:
JP9625990A
Publication Date:
December 25, 1991
Filing Date:
April 13, 1990
Export Citation:
Assignee:
SEIMI CHEM KK
International Classes:
G02F1/13; C07C22/08; C07C23/18; C07C25/24; C07C43/17; C07C43/192; C07C43/225; C07C43/247; C07C43/29; C07C245/02; C07C251/02; C07C255/46; C07C255/49; C07C265/00; C07C291/08; C09K19/16; C09K19/30; C09K19/34; C09K19/42; (IPC1-7): C09K19/16; C09K19/30; C09K19/34; C09K19/42; G02F1/13
Other References:
J.AM.CHE.SOC=1988
J.FLUORINE CHEM=1984
J.FLUORINE CHEM=1984
Attorney, Agent or Firm:
Kenji Izumina
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