Title:
(FLUOROALKENYL)BENZENE DERIVATIVE
Document Type and Number:
Japanese Patent JP3642345
Kind Code:
B2
Abstract:
PURPOSE: To obtain the subject new compound chemically stable to heat, light, water, etc., having excellent compatibility with general purpose nematic liquid crystal, useful for various liquid crystal display elements having a wide temperature range of a liquid crystal phase and requiring low-voltage drive.
CONSTITUTION: This compound is expressed by formula I [R1 is a 1-12 alkyl; L and M are each independently a single bond or CH2CH2; ring A is 1,4- cyclohexylene or (fluorine-substituted) 1,4-phenylene; Y1 and Y2 are each independently H or F; (n) is an integer of 1-7; cyclohexane ring is in trans-configuration] such as trans-4-[4-(2-fluoro-2-propenyl)-3,5-difluorophenyl]-trans-4'- propylbicyclohexane of formula II. The compound of formula I, for example, is obtained by reacting a corresponding alkenylbenzene derivative of formula III with HF-pyridine complex in the presence of N-iodosuccinimide and dehydroiodating the prepared (iodofluoroalkyl)benzene derivative with a base.
Inventors:
Sadao Takehara
Haruyoshi Takatsu
Tamejiro Hiyama
Tetsuo Kusumoto
Kenichi Sato
Haruyoshi Takatsu
Tamejiro Hiyama
Tetsuo Kusumoto
Kenichi Sato
Application Number:
JP16000694A
Publication Date:
April 27, 2005
Filing Date:
July 12, 1994
Export Citation:
Assignee:
Dainippon Ink and Chemicals Co., Ltd.
International Classes:
G02F1/13; C07C22/08; C07C25/24; C09K19/30; C09K19/54; (IPC1-7): C07C22/08; C07C25/24; C09K19/30; C09K19/54; G02F1/13
Domestic Patent References:
| JP3508159B2 | ||||
| JP7247229A | ||||
| JP6122636A | ||||
| JP7082181A |
Attorney, Agent or Firm:
Takahashi victory
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