2-(4-SUBSTITUTED PHENYL)-4-FLUOROALKANENITRILE DERIVATIVE, LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME DERIVATIVE AND LIQUID CRYSTAL DISPLAY ELEMENT

Title:

2-(4-SUBSTITUTED PHENYL)-4-FLUOROALKANENITRILE DERIVATIVE, LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME DERIVATIVE AND LIQUID CRYSTAL DISPLAY ELEMENT

Document Type and Number:

Japanese Patent JPH04327567

Kind Code:

A

Abstract:

PURPOSE: To obtain a novel colorless compound useful as a high-response liquid crystal material, especially a light switching element for display, having excellent chemical stability.

CONSTITUTION: A compound shown by formula I (R1 is 1-18C alkyl; R2 is 1-18C alkyl; X is O, COO or single bond; m is 0 or 1; ring A is 1,4-phenylene, trans-1,4- cyclohexylene; n is 1 or 2; C* and C** are asymmetric C in R or S configuration, respectively) such as (2S,4S)-4-fluoro-2-[44-hexyloxyphenyl)phenyl]decanenitrile. The compound shown by formula I is obtained by reacting a compound shown by formula II with an optically active epoxy compound shown by formula III in the presence of a storing base (e.g. butyllithium) to give an optically active 2-(4-substituted phenyl)-4-hydroxyalkane=tolyl derivative shown by formula IV and then treating this compound with a fluorinating agent.

Inventors:

TAKEHARA SADAO
OSAWA MASASHI
NAKAMURA KAYOKO
HIYAMA TAMEJIROU
KUSUMOTO TETSUO
NAKAYAMA AKIKO
NISHIDE KIYOJI

Application Number:

JP12544891A

Publication Date:

November 17, 1992

Filing Date:

April 26, 1991

Export Citation:

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Assignee:

DAINIPPON INK & CHEMICALS
SAGAMI CHEM RES

International Classes:

C07C255/35; C07C255/37; C07C255/38; C09K19/54; C09K19/58; G02F1/13; (IPC1-7): C07C255/35; C07C255/37; C07C255/38; C09K19/54; C09K19/58; G02F1/13

Attorney, Agent or Firm:

Masatake Shiga (2 outside)

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