OPTICALLY ACTIVE COMPOUND, ITS INTERMEDIATE, PRODUCTION OF THE INTERMEDIATE, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT

Japanese Patent JPH0352845

A

NEW MATERIAL:The optically active compound of formula I [R1 is 1-18C optically active or optically inactive alkyl, alkoxy, alkanoyloxy or alkoxycarbonyl; m is 0 or 1; rings A and B are independently group of formula II, formula III (trans-1-4-cyclohexylene group) formula IV, formula V, etc.] X is F, Cl, etc., substituted to the 2- or 3-site of 1,4-phenylene group: Z is COO, OCO, CH2O, single bond, etc.; R2 is 2-18C alkyl; C* is asymmetric carbon atom having (R) or (S) configuration].

EXAMPLE: (-)-4 (1-Methoxyhexyl)benzoic acid 4-(4'-bentyloxy)biphenyl ester.

USE: Useful as a material for optical switching element for display. It has high response and good memory property.

PREPARATION: The compound of formula I can be produced by reacting a compound of formula VI with a new intermediate of formula VII in the presence of a dehydrative condensation agent.

TAKEHARA SADAO
KURIYAMA TAKESHI
NAKAMURA KAYOKO
SHOJI TADAO
FUJISAWA NOBURU
OSAWA MASASHI
HIYAMA TAMEJIROU
KUSUMOTO TETSUO

JP18753689A

March 07, 1991

July 21, 1989

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DAINIPPON INK & CHEMICALS
KAWAMURA INST CHEM RES
SAGAMI CHEM RES

G02F1/13; C07B53/00; C07B57/00; C07C51/09; C07C65/21; C07C69/76; C07C69/773; C07C255/54; C07C255/55; C07C255/57; C07D213/30; C07D213/64; C07D213/65; C07D213/69; C07D213/79; C07D213/80; C07D237/08; C07D237/14; C07D237/16; C07D237/24; C07D239/26; C07D239/34; C07D241/12; C07D241/18; C07D241/24; C09K19/20; C09K19/30; C09K19/34; C09K19/46; (IPC1-7): C07; C07B53/00; C07B57/00; C07C51/09; C07C65/21; C07C69/76; C07C69/773; C07C255/54; C07C255/55; C07C255/57; C07D213/30; C07D213/64; C07D213/65; C07D213/69; C07D213/79; C07D213/80; C07D237/08; C07D237/14; C07D237/16; C07D237/24; C07D241/12; C07D241/18; C07D241/24; C09K19/20; C09K19/30; C09K19/34; C09K19/46; G02F1/13

Tadashi Sano

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