FLUOROCYCLOPROPANE DERIVATIVE AND LIQUID CRYSTAL COMPOSITION

Japanese Patent JP3575049

B2

PURPOSE: To obtain a liquid crystal compound being a new fluorocyclopropane derivative having high upper limit temperature of liquid crystal phase and not having so large dielectric anisotropy and capable of lowering threshold voltage of a composition by addition thereof.
CONSTITUTION: The compound of formula I(R1 is 1-12C alky1; R2 is H or a 1-7C alky1; Z1 and Z2 each is a single bond or CH2CH2, with the proviso that at least either one is a single bond; a ring A is 1,4-cyclohexylene or 1,4- phenylene which may be substituted with ≤2 fluorine atoms; X1 and X2 each is H or F; two substituent groups of cyclohexane ring has trans configuration), e.g. trans-1-fluoro-2-[4-[trans-4-(trans-4propylcyclohexyl) cyclohexyl]phenyl]cyclopropane. The compound is obtained by reacting a (1- alkenyl)benzene derivative with fluorodiiodomethane in the presence of a dialkylzinc. The compound is chemically stable to heat, light, water, etc., and excellent also in compatibility with a mother liquid crystal.

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Sadao Takehara
Haruyoshi Takatsu
Shinji Ogawa
Tamejiro Hiyama
Tetsuo Kusumoto
Kenichi Sato

JP4098694A

October 06, 2004

March 11, 1994

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Dainippon Ink and Chemicals Co., Ltd.

G02F1/13; C07C23/18; C07C25/18; C09K19/30; (IPC1-7): C07C23/18; C09K19/30; G02F1/13

JP6228024A

Takahashi victory

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