Title:
TRIFLUOROCYCLOPROPANE DERIVATIVE AND LIQUID CRYSTAL COMPOSITION
Document Type and Number:
Japanese Patent JP3508159
Kind Code:
B2
Abstract:
PURPOSE: To provide a new trifluorocyclopropane derivative useful for various liquid crystal display elements wide in applicable temperature range and required for low-voltage driving, esp. as a liquid crystal material for active matrix driving.
CONSTITUTION: The objective compound of formula I [R1 is 1-12C alkyl; R2 is H or 1-7C alkyl; Z1 and Z2 are each single bond or CH2CH2 (at least one of them is single bond); ring A is 1,4-cyclohexylene or 1,4-phenylene each of which may be mono- or disubstituted)], e.g. 1-{4-[trans-4-propylcyclohexyl) cyclohexyl]phenyl-1,2,2-trifluorocyclopropane. The compound of the formula I can easily be obtained by reaction of the corresponding new (1-fluoro-1-alkenyl) benzene derivative of formula II with chlorodifluoroacetate under heating. The compound of the present invention is highly chemically stable to heat, light- water, etc., and also excellent in the compatibility with matrix liquid crystal.
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Inventors:
Takehara, Sadao
Takatsu, Haruyoshi
Ogawa, Shinji
Hiyama, Tamejirou
Kusumoto, Tetsuo
Sato, Kenichi
Takatsu, Haruyoshi
Ogawa, Shinji
Hiyama, Tamejirou
Kusumoto, Tetsuo
Sato, Kenichi
Application Number:
JP14754593A
Publication Date:
March 22, 2004
Filing Date:
June 18, 1993
Export Citation:
Assignee:
DAINIPPON INK & CHEM INC
Sagami, Chem Res Center
Sagami, Chem Res Center
International Classes:
C07C17/26; C07C17/25; C07C22/08; C07C23/18; C07C25/18; C07C25/24; C09K19/30; G02F1/13; (IPC1-7): C07C23/18; C07C22/08; C09K19/30
Attorney, Agent or Firm:
高橋 勝利