DIACETYLENE COMPOUND, LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME AND LIQUID CRYSTAL ELEMENT USING THE SAME

Title:

DIACETYLENE COMPOUND, LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME AND LIQUID CRYSTAL ELEMENT USING THE SAME

Document Type and Number:

Japanese Patent JPH111445

Kind Code:

A

Abstract:

To obtain a new diacetylene compound having a large anisotropy of refractive index and useful as a constituting material for liquid crystal elements or as a constituent for liquid crystal compositions.

A compound of formula I [A, B are each independently 1,4- phenylene, 1,4-(2-fluoro)phenylene, etc.; (l), (m) are each independently 0, 1; E, G are each independently F, methyl, methoxy, R1, R2 are each independently H, F, CF3, etc.; when A, B are simultaneously not 1,4-phenylene, etc., at the one of R1, R2 is a not a linear alkyl, etc.]. The compound of formula I is obtained by reacting a compound of formula II with a compound of formula III in the presence of a basic catalyst such as a copper chloride catalyst, a hydroxy amine hydrochloride or ethylamine.

Inventors:

SEKINE CHIZU
FUJISAWA KOICHI
FUJIMOTO YUKARI
MINAMII MASAYOSHI

Application Number:

JP15659897A

Publication Date:

January 06, 1999

Filing Date:

June 13, 1997

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO

International Classes:

G02F1/13; C07C15/50; C07C15/56; C07C23/10; C07C25/24; C07C43/20; C07C43/205; C07C43/225; C07C255/50; C07C255/52; C07C255/54; C09K19/18; (IPC1-7): C07C15/50; C07C15/56; C07C23/10; C07C25/24; C07C43/20; C07C43/205; C07C43/225; C07C255/50; C07C255/52; C07C255/54; C09K19/18; G02F1/13

Domestic Patent References:

JPH06211704A	1994-08-02
JPH0849172A	1996-02-20
JPS56123903A	1981-09-29
JPH0929882A	1997-02-04
JPH0940958A	1997-02-10
JPH08133996A	1996-05-28
JPS60217213A	1985-10-30

Foreign References:

US5457235A	1995-10-10
WO1995012378A2	1995-05-11
DE4013297A1	1991-10-31

Other References:

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (1997), 119(3),P.619-620, JPN4007018983, ISSN: 0000895493
JOURNAL OF ORGANIC CHEMISTRY (1994), 59(26),P.8053-7, JPN4007018984, ISSN: 0000895494
MOLECULAR CRYSTALS AND LIQUID CRYSTALS (1979), 51(3-4),P.209-14, JPN4007018985, ISSN: 0000895495
MOLECULAR CRYSTALS AND LIQUID CRYSTALS (1993), 225,P.1-14, JPN4007018986, ISSN: 0000895496
LIQUID CRYSTALS (1995), 19(4),P.409-14, JPN4007018987, ISSN: 0000895497
MOLECULAR CRYSTALS AND LIQUID CRYSTALS (1995), 268,P.55-9, JPN4007018988, ISSN: 0000895498
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (1997), 119(13),P.3197-3198, JPN4007018989, ISSN: 0000895499
MOLECULAR CRYSTALS AND LIQUID CRYSTALS (1996), 289,P.141-148, JPN4007018990, ISSN: 0000895500
MOLECULAR CRYSTALS AND LIQUID CRYSTALS (1978), 48(3-4),P.175-82, JPN4007018991, ISSN: 0000895501
PROCEEDINGS OF SPIE-THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING,(1993), 1911(LIQUID CRYSTAL MA, JPN4007018980, ISSN: 0000895490
LIQUID CRYSTALS (1993), 15(4),P.529-40, JPN4007018981, ISSN: 0000895491
MOLECULAR CRYSTALS AND LIQUID CRYSTALS (1994), 250,P.303-14, JPN4007018982, ISSN: 0000895492

Attorney, Agent or Firm:

久保山隆（外１名）

Next Patent: JPH0111446