Title:
DIFLUOROCYANO COMPOUND, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL ELECTRO-OPTIC DEVICE
Document Type and Number:
Japanese Patent JP3229007
Kind Code:
B2
Abstract:
PURPOSE: To provide the subject new difluorocyano compound capable of providing a chemically stable liquid crystal composition exhibiting a lowered threshold voltage and capable of lowvoltage drive.
CONSTITUTION: A compound of formula I [A is a 1,4-disubstituted phenylene (One or two or more CH may be substituted with N) which may have one or two or more halogen or methyl as substituents; R is H or a 1 to 10C alkyl (One or two or more H may be substituted with F. O may be inserted into a C-C bond including one between the substituent group and the ring)], e.g. a compound of formula 13. The above-mentioned compound can be obtained from 3,5-difluorobenzoic acid of formula 2 as the starting material by a reaction according to the reaction formula.
Inventors:
Tamon Tachibana
Kanji Inoue
Kanji Inoue
Application Number:
JP11815392A
Publication Date:
November 12, 2001
Filing Date:
April 10, 1992
Export Citation:
Assignee:
Seimi Chemical Co., Ltd.
International Classes:
C07D239/26; C07C255/50; C07C255/54; C09K19/18; C09K19/34; (IPC1-7): C07C255/50; C07C255/54; C09K19/18
Domestic Patent References:
| JP4128258A | ||||
| JP429976A |
Other References:
【文献】欧州特許出願公開442266(EP,A1)
Attorney, Agent or Firm:
Mamoru Tsunoda